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2247 lines
56 KiB
2247 lines
56 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Copyright (c) 2000-2006 Silicon Graphics, Inc. |
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* All Rights Reserved. |
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*/ |
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|
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#include "xfs.h" |
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#include "xfs_shared.h" |
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#include "xfs_format.h" |
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#include "xfs_log_format.h" |
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#include "xfs_trans_resv.h" |
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#include "xfs_sb.h" |
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#include "xfs_mount.h" |
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#include "xfs_inode.h" |
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#include "xfs_btree.h" |
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#include "xfs_bmap.h" |
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#include "xfs_alloc.h" |
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#include "xfs_fsops.h" |
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#include "xfs_trans.h" |
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#include "xfs_buf_item.h" |
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#include "xfs_log.h" |
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#include "xfs_log_priv.h" |
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#include "xfs_dir2.h" |
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#include "xfs_extfree_item.h" |
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#include "xfs_mru_cache.h" |
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#include "xfs_inode_item.h" |
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#include "xfs_icache.h" |
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#include "xfs_trace.h" |
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#include "xfs_icreate_item.h" |
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#include "xfs_filestream.h" |
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#include "xfs_quota.h" |
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#include "xfs_sysfs.h" |
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#include "xfs_ondisk.h" |
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#include "xfs_rmap_item.h" |
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#include "xfs_refcount_item.h" |
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#include "xfs_bmap_item.h" |
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#include "xfs_reflink.h" |
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#include "xfs_pwork.h" |
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#include "xfs_ag.h" |
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|
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#include <linux/magic.h> |
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#include <linux/fs_context.h> |
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#include <linux/fs_parser.h> |
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|
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static const struct super_operations xfs_super_operations; |
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|
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static struct kset *xfs_kset; /* top-level xfs sysfs dir */ |
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#ifdef DEBUG |
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static struct xfs_kobj xfs_dbg_kobj; /* global debug sysfs attrs */ |
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#endif |
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|
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enum xfs_dax_mode { |
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XFS_DAX_INODE = 0, |
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XFS_DAX_ALWAYS = 1, |
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XFS_DAX_NEVER = 2, |
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}; |
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|
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static void |
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xfs_mount_set_dax_mode( |
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struct xfs_mount *mp, |
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enum xfs_dax_mode mode) |
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{ |
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switch (mode) { |
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case XFS_DAX_INODE: |
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mp->m_flags &= ~(XFS_MOUNT_DAX_ALWAYS | XFS_MOUNT_DAX_NEVER); |
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break; |
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case XFS_DAX_ALWAYS: |
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mp->m_flags |= XFS_MOUNT_DAX_ALWAYS; |
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mp->m_flags &= ~XFS_MOUNT_DAX_NEVER; |
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break; |
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case XFS_DAX_NEVER: |
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mp->m_flags |= XFS_MOUNT_DAX_NEVER; |
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mp->m_flags &= ~XFS_MOUNT_DAX_ALWAYS; |
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break; |
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} |
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} |
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|
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static const struct constant_table dax_param_enums[] = { |
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{"inode", XFS_DAX_INODE }, |
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{"always", XFS_DAX_ALWAYS }, |
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{"never", XFS_DAX_NEVER }, |
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{} |
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}; |
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|
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/* |
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* Table driven mount option parser. |
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*/ |
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enum { |
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Opt_logbufs, Opt_logbsize, Opt_logdev, Opt_rtdev, |
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Opt_wsync, Opt_noalign, Opt_swalloc, Opt_sunit, Opt_swidth, Opt_nouuid, |
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Opt_grpid, Opt_nogrpid, Opt_bsdgroups, Opt_sysvgroups, |
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Opt_allocsize, Opt_norecovery, Opt_inode64, Opt_inode32, Opt_ikeep, |
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Opt_noikeep, Opt_largeio, Opt_nolargeio, Opt_attr2, Opt_noattr2, |
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Opt_filestreams, Opt_quota, Opt_noquota, Opt_usrquota, Opt_grpquota, |
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Opt_prjquota, Opt_uquota, Opt_gquota, Opt_pquota, |
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Opt_uqnoenforce, Opt_gqnoenforce, Opt_pqnoenforce, Opt_qnoenforce, |
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Opt_discard, Opt_nodiscard, Opt_dax, Opt_dax_enum, |
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}; |
|
|
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static const struct fs_parameter_spec xfs_fs_parameters[] = { |
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fsparam_u32("logbufs", Opt_logbufs), |
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fsparam_string("logbsize", Opt_logbsize), |
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fsparam_string("logdev", Opt_logdev), |
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fsparam_string("rtdev", Opt_rtdev), |
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fsparam_flag("wsync", Opt_wsync), |
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fsparam_flag("noalign", Opt_noalign), |
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fsparam_flag("swalloc", Opt_swalloc), |
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fsparam_u32("sunit", Opt_sunit), |
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fsparam_u32("swidth", Opt_swidth), |
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fsparam_flag("nouuid", Opt_nouuid), |
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fsparam_flag("grpid", Opt_grpid), |
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fsparam_flag("nogrpid", Opt_nogrpid), |
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fsparam_flag("bsdgroups", Opt_bsdgroups), |
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fsparam_flag("sysvgroups", Opt_sysvgroups), |
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fsparam_string("allocsize", Opt_allocsize), |
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fsparam_flag("norecovery", Opt_norecovery), |
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fsparam_flag("inode64", Opt_inode64), |
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fsparam_flag("inode32", Opt_inode32), |
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fsparam_flag("ikeep", Opt_ikeep), |
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fsparam_flag("noikeep", Opt_noikeep), |
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fsparam_flag("largeio", Opt_largeio), |
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fsparam_flag("nolargeio", Opt_nolargeio), |
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fsparam_flag("attr2", Opt_attr2), |
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fsparam_flag("noattr2", Opt_noattr2), |
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fsparam_flag("filestreams", Opt_filestreams), |
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fsparam_flag("quota", Opt_quota), |
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fsparam_flag("noquota", Opt_noquota), |
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fsparam_flag("usrquota", Opt_usrquota), |
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fsparam_flag("grpquota", Opt_grpquota), |
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fsparam_flag("prjquota", Opt_prjquota), |
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fsparam_flag("uquota", Opt_uquota), |
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fsparam_flag("gquota", Opt_gquota), |
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fsparam_flag("pquota", Opt_pquota), |
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fsparam_flag("uqnoenforce", Opt_uqnoenforce), |
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fsparam_flag("gqnoenforce", Opt_gqnoenforce), |
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fsparam_flag("pqnoenforce", Opt_pqnoenforce), |
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fsparam_flag("qnoenforce", Opt_qnoenforce), |
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fsparam_flag("discard", Opt_discard), |
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fsparam_flag("nodiscard", Opt_nodiscard), |
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fsparam_flag("dax", Opt_dax), |
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fsparam_enum("dax", Opt_dax_enum, dax_param_enums), |
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{} |
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}; |
|
|
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struct proc_xfs_info { |
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uint64_t flag; |
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char *str; |
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}; |
|
|
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static int |
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xfs_fs_show_options( |
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struct seq_file *m, |
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struct dentry *root) |
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{ |
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static struct proc_xfs_info xfs_info_set[] = { |
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/* the few simple ones we can get from the mount struct */ |
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{ XFS_MOUNT_IKEEP, ",ikeep" }, |
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{ XFS_MOUNT_WSYNC, ",wsync" }, |
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{ XFS_MOUNT_NOALIGN, ",noalign" }, |
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{ XFS_MOUNT_SWALLOC, ",swalloc" }, |
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{ XFS_MOUNT_NOUUID, ",nouuid" }, |
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{ XFS_MOUNT_NORECOVERY, ",norecovery" }, |
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{ XFS_MOUNT_ATTR2, ",attr2" }, |
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{ XFS_MOUNT_FILESTREAMS, ",filestreams" }, |
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{ XFS_MOUNT_GRPID, ",grpid" }, |
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{ XFS_MOUNT_DISCARD, ",discard" }, |
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{ XFS_MOUNT_LARGEIO, ",largeio" }, |
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{ XFS_MOUNT_DAX_ALWAYS, ",dax=always" }, |
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{ XFS_MOUNT_DAX_NEVER, ",dax=never" }, |
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{ 0, NULL } |
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}; |
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struct xfs_mount *mp = XFS_M(root->d_sb); |
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struct proc_xfs_info *xfs_infop; |
|
|
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for (xfs_infop = xfs_info_set; xfs_infop->flag; xfs_infop++) { |
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if (mp->m_flags & xfs_infop->flag) |
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seq_puts(m, xfs_infop->str); |
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} |
|
|
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seq_printf(m, ",inode%d", |
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(mp->m_flags & XFS_MOUNT_SMALL_INUMS) ? 32 : 64); |
|
|
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if (mp->m_flags & XFS_MOUNT_ALLOCSIZE) |
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seq_printf(m, ",allocsize=%dk", |
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(1 << mp->m_allocsize_log) >> 10); |
|
|
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if (mp->m_logbufs > 0) |
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seq_printf(m, ",logbufs=%d", mp->m_logbufs); |
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if (mp->m_logbsize > 0) |
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seq_printf(m, ",logbsize=%dk", mp->m_logbsize >> 10); |
|
|
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if (mp->m_logname) |
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seq_show_option(m, "logdev", mp->m_logname); |
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if (mp->m_rtname) |
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seq_show_option(m, "rtdev", mp->m_rtname); |
|
|
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if (mp->m_dalign > 0) |
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seq_printf(m, ",sunit=%d", |
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(int)XFS_FSB_TO_BB(mp, mp->m_dalign)); |
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if (mp->m_swidth > 0) |
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seq_printf(m, ",swidth=%d", |
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(int)XFS_FSB_TO_BB(mp, mp->m_swidth)); |
|
|
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if (mp->m_qflags & XFS_UQUOTA_ACCT) { |
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if (mp->m_qflags & XFS_UQUOTA_ENFD) |
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seq_puts(m, ",usrquota"); |
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else |
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seq_puts(m, ",uqnoenforce"); |
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} |
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|
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if (mp->m_qflags & XFS_PQUOTA_ACCT) { |
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if (mp->m_qflags & XFS_PQUOTA_ENFD) |
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seq_puts(m, ",prjquota"); |
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else |
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seq_puts(m, ",pqnoenforce"); |
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} |
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if (mp->m_qflags & XFS_GQUOTA_ACCT) { |
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if (mp->m_qflags & XFS_GQUOTA_ENFD) |
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seq_puts(m, ",grpquota"); |
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else |
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seq_puts(m, ",gqnoenforce"); |
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} |
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|
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if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT)) |
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seq_puts(m, ",noquota"); |
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|
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return 0; |
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} |
|
|
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/* |
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* Set parameters for inode allocation heuristics, taking into account |
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* filesystem size and inode32/inode64 mount options; i.e. specifically |
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* whether or not XFS_MOUNT_SMALL_INUMS is set. |
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* |
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* Inode allocation patterns are altered only if inode32 is requested |
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* (XFS_MOUNT_SMALL_INUMS), and the filesystem is sufficiently large. |
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* If altered, XFS_MOUNT_32BITINODES is set as well. |
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* |
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* An agcount independent of that in the mount structure is provided |
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* because in the growfs case, mp->m_sb.sb_agcount is not yet updated |
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* to the potentially higher ag count. |
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* |
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* Returns the maximum AG index which may contain inodes. |
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*/ |
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xfs_agnumber_t |
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xfs_set_inode_alloc( |
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struct xfs_mount *mp, |
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xfs_agnumber_t agcount) |
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{ |
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xfs_agnumber_t index; |
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xfs_agnumber_t maxagi = 0; |
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xfs_sb_t *sbp = &mp->m_sb; |
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xfs_agnumber_t max_metadata; |
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xfs_agino_t agino; |
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xfs_ino_t ino; |
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|
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/* |
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* Calculate how much should be reserved for inodes to meet |
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* the max inode percentage. Used only for inode32. |
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*/ |
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if (M_IGEO(mp)->maxicount) { |
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uint64_t icount; |
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|
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icount = sbp->sb_dblocks * sbp->sb_imax_pct; |
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do_div(icount, 100); |
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icount += sbp->sb_agblocks - 1; |
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do_div(icount, sbp->sb_agblocks); |
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max_metadata = icount; |
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} else { |
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max_metadata = agcount; |
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} |
|
|
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/* Get the last possible inode in the filesystem */ |
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agino = XFS_AGB_TO_AGINO(mp, sbp->sb_agblocks - 1); |
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ino = XFS_AGINO_TO_INO(mp, agcount - 1, agino); |
|
|
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/* |
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* If user asked for no more than 32-bit inodes, and the fs is |
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* sufficiently large, set XFS_MOUNT_32BITINODES if we must alter |
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* the allocator to accommodate the request. |
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*/ |
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if ((mp->m_flags & XFS_MOUNT_SMALL_INUMS) && ino > XFS_MAXINUMBER_32) |
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mp->m_flags |= XFS_MOUNT_32BITINODES; |
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else |
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mp->m_flags &= ~XFS_MOUNT_32BITINODES; |
|
|
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for (index = 0; index < agcount; index++) { |
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struct xfs_perag *pag; |
|
|
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ino = XFS_AGINO_TO_INO(mp, index, agino); |
|
|
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pag = xfs_perag_get(mp, index); |
|
|
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if (mp->m_flags & XFS_MOUNT_32BITINODES) { |
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if (ino > XFS_MAXINUMBER_32) { |
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pag->pagi_inodeok = 0; |
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pag->pagf_metadata = 0; |
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} else { |
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pag->pagi_inodeok = 1; |
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maxagi++; |
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if (index < max_metadata) |
|
pag->pagf_metadata = 1; |
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else |
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pag->pagf_metadata = 0; |
|
} |
|
} else { |
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pag->pagi_inodeok = 1; |
|
pag->pagf_metadata = 0; |
|
} |
|
|
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xfs_perag_put(pag); |
|
} |
|
|
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return (mp->m_flags & XFS_MOUNT_32BITINODES) ? maxagi : agcount; |
|
} |
|
|
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STATIC int |
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xfs_blkdev_get( |
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xfs_mount_t *mp, |
|
const char *name, |
|
struct block_device **bdevp) |
|
{ |
|
int error = 0; |
|
|
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*bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL, |
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mp); |
|
if (IS_ERR(*bdevp)) { |
|
error = PTR_ERR(*bdevp); |
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xfs_warn(mp, "Invalid device [%s], error=%d", name, error); |
|
} |
|
|
|
return error; |
|
} |
|
|
|
STATIC void |
|
xfs_blkdev_put( |
|
struct block_device *bdev) |
|
{ |
|
if (bdev) |
|
blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); |
|
} |
|
|
|
STATIC void |
|
xfs_close_devices( |
|
struct xfs_mount *mp) |
|
{ |
|
struct dax_device *dax_ddev = mp->m_ddev_targp->bt_daxdev; |
|
|
|
if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { |
|
struct block_device *logdev = mp->m_logdev_targp->bt_bdev; |
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struct dax_device *dax_logdev = mp->m_logdev_targp->bt_daxdev; |
|
|
|
xfs_free_buftarg(mp->m_logdev_targp); |
|
xfs_blkdev_put(logdev); |
|
fs_put_dax(dax_logdev); |
|
} |
|
if (mp->m_rtdev_targp) { |
|
struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; |
|
struct dax_device *dax_rtdev = mp->m_rtdev_targp->bt_daxdev; |
|
|
|
xfs_free_buftarg(mp->m_rtdev_targp); |
|
xfs_blkdev_put(rtdev); |
|
fs_put_dax(dax_rtdev); |
|
} |
|
xfs_free_buftarg(mp->m_ddev_targp); |
|
fs_put_dax(dax_ddev); |
|
} |
|
|
|
/* |
|
* The file system configurations are: |
|
* (1) device (partition) with data and internal log |
|
* (2) logical volume with data and log subvolumes. |
|
* (3) logical volume with data, log, and realtime subvolumes. |
|
* |
|
* We only have to handle opening the log and realtime volumes here if |
|
* they are present. The data subvolume has already been opened by |
|
* get_sb_bdev() and is stored in sb->s_bdev. |
|
*/ |
|
STATIC int |
|
xfs_open_devices( |
|
struct xfs_mount *mp) |
|
{ |
|
struct block_device *ddev = mp->m_super->s_bdev; |
|
struct dax_device *dax_ddev = fs_dax_get_by_bdev(ddev); |
|
struct dax_device *dax_logdev = NULL, *dax_rtdev = NULL; |
|
struct block_device *logdev = NULL, *rtdev = NULL; |
|
int error; |
|
|
|
/* |
|
* Open real time and log devices - order is important. |
|
*/ |
|
if (mp->m_logname) { |
|
error = xfs_blkdev_get(mp, mp->m_logname, &logdev); |
|
if (error) |
|
goto out; |
|
dax_logdev = fs_dax_get_by_bdev(logdev); |
|
} |
|
|
|
if (mp->m_rtname) { |
|
error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev); |
|
if (error) |
|
goto out_close_logdev; |
|
|
|
if (rtdev == ddev || rtdev == logdev) { |
|
xfs_warn(mp, |
|
"Cannot mount filesystem with identical rtdev and ddev/logdev."); |
|
error = -EINVAL; |
|
goto out_close_rtdev; |
|
} |
|
dax_rtdev = fs_dax_get_by_bdev(rtdev); |
|
} |
|
|
|
/* |
|
* Setup xfs_mount buffer target pointers |
|
*/ |
|
error = -ENOMEM; |
|
mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev, dax_ddev); |
|
if (!mp->m_ddev_targp) |
|
goto out_close_rtdev; |
|
|
|
if (rtdev) { |
|
mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev, dax_rtdev); |
|
if (!mp->m_rtdev_targp) |
|
goto out_free_ddev_targ; |
|
} |
|
|
|
if (logdev && logdev != ddev) { |
|
mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev, dax_logdev); |
|
if (!mp->m_logdev_targp) |
|
goto out_free_rtdev_targ; |
|
} else { |
|
mp->m_logdev_targp = mp->m_ddev_targp; |
|
} |
|
|
|
return 0; |
|
|
|
out_free_rtdev_targ: |
|
if (mp->m_rtdev_targp) |
|
xfs_free_buftarg(mp->m_rtdev_targp); |
|
out_free_ddev_targ: |
|
xfs_free_buftarg(mp->m_ddev_targp); |
|
out_close_rtdev: |
|
xfs_blkdev_put(rtdev); |
|
fs_put_dax(dax_rtdev); |
|
out_close_logdev: |
|
if (logdev && logdev != ddev) { |
|
xfs_blkdev_put(logdev); |
|
fs_put_dax(dax_logdev); |
|
} |
|
out: |
|
fs_put_dax(dax_ddev); |
|
return error; |
|
} |
|
|
|
/* |
|
* Setup xfs_mount buffer target pointers based on superblock |
|
*/ |
|
STATIC int |
|
xfs_setup_devices( |
|
struct xfs_mount *mp) |
|
{ |
|
int error; |
|
|
|
error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_sectsize); |
|
if (error) |
|
return error; |
|
|
|
if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { |
|
unsigned int log_sector_size = BBSIZE; |
|
|
|
if (xfs_sb_version_hassector(&mp->m_sb)) |
|
log_sector_size = mp->m_sb.sb_logsectsize; |
|
error = xfs_setsize_buftarg(mp->m_logdev_targp, |
|
log_sector_size); |
|
if (error) |
|
return error; |
|
} |
|
if (mp->m_rtdev_targp) { |
|
error = xfs_setsize_buftarg(mp->m_rtdev_targp, |
|
mp->m_sb.sb_sectsize); |
|
if (error) |
|
return error; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
STATIC int |
|
xfs_init_mount_workqueues( |
|
struct xfs_mount *mp) |
|
{ |
|
mp->m_buf_workqueue = alloc_workqueue("xfs-buf/%s", |
|
XFS_WQFLAGS(WQ_FREEZABLE | WQ_MEM_RECLAIM), |
|
1, mp->m_super->s_id); |
|
if (!mp->m_buf_workqueue) |
|
goto out; |
|
|
|
mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s", |
|
XFS_WQFLAGS(WQ_FREEZABLE | WQ_MEM_RECLAIM), |
|
0, mp->m_super->s_id); |
|
if (!mp->m_unwritten_workqueue) |
|
goto out_destroy_buf; |
|
|
|
mp->m_cil_workqueue = alloc_workqueue("xfs-cil/%s", |
|
XFS_WQFLAGS(WQ_FREEZABLE | WQ_MEM_RECLAIM | WQ_UNBOUND), |
|
0, mp->m_super->s_id); |
|
if (!mp->m_cil_workqueue) |
|
goto out_destroy_unwritten; |
|
|
|
mp->m_reclaim_workqueue = alloc_workqueue("xfs-reclaim/%s", |
|
XFS_WQFLAGS(WQ_FREEZABLE | WQ_MEM_RECLAIM), |
|
0, mp->m_super->s_id); |
|
if (!mp->m_reclaim_workqueue) |
|
goto out_destroy_cil; |
|
|
|
mp->m_gc_workqueue = alloc_workqueue("xfs-gc/%s", |
|
WQ_SYSFS | WQ_UNBOUND | WQ_FREEZABLE | WQ_MEM_RECLAIM, |
|
0, mp->m_super->s_id); |
|
if (!mp->m_gc_workqueue) |
|
goto out_destroy_reclaim; |
|
|
|
mp->m_sync_workqueue = alloc_workqueue("xfs-sync/%s", |
|
XFS_WQFLAGS(WQ_FREEZABLE), 0, mp->m_super->s_id); |
|
if (!mp->m_sync_workqueue) |
|
goto out_destroy_eofb; |
|
|
|
return 0; |
|
|
|
out_destroy_eofb: |
|
destroy_workqueue(mp->m_gc_workqueue); |
|
out_destroy_reclaim: |
|
destroy_workqueue(mp->m_reclaim_workqueue); |
|
out_destroy_cil: |
|
destroy_workqueue(mp->m_cil_workqueue); |
|
out_destroy_unwritten: |
|
destroy_workqueue(mp->m_unwritten_workqueue); |
|
out_destroy_buf: |
|
destroy_workqueue(mp->m_buf_workqueue); |
|
out: |
|
return -ENOMEM; |
|
} |
|
|
|
STATIC void |
|
xfs_destroy_mount_workqueues( |
|
struct xfs_mount *mp) |
|
{ |
|
destroy_workqueue(mp->m_sync_workqueue); |
|
destroy_workqueue(mp->m_gc_workqueue); |
|
destroy_workqueue(mp->m_reclaim_workqueue); |
|
destroy_workqueue(mp->m_cil_workqueue); |
|
destroy_workqueue(mp->m_unwritten_workqueue); |
|
destroy_workqueue(mp->m_buf_workqueue); |
|
} |
|
|
|
static void |
|
xfs_flush_inodes_worker( |
|
struct work_struct *work) |
|
{ |
|
struct xfs_mount *mp = container_of(work, struct xfs_mount, |
|
m_flush_inodes_work); |
|
struct super_block *sb = mp->m_super; |
|
|
|
if (down_read_trylock(&sb->s_umount)) { |
|
sync_inodes_sb(sb); |
|
up_read(&sb->s_umount); |
|
} |
|
} |
|
|
|
/* |
|
* Flush all dirty data to disk. Must not be called while holding an XFS_ILOCK |
|
* or a page lock. We use sync_inodes_sb() here to ensure we block while waiting |
|
* for IO to complete so that we effectively throttle multiple callers to the |
|
* rate at which IO is completing. |
|
*/ |
|
void |
|
xfs_flush_inodes( |
|
struct xfs_mount *mp) |
|
{ |
|
/* |
|
* If flush_work() returns true then that means we waited for a flush |
|
* which was already in progress. Don't bother running another scan. |
|
*/ |
|
if (flush_work(&mp->m_flush_inodes_work)) |
|
return; |
|
|
|
queue_work(mp->m_sync_workqueue, &mp->m_flush_inodes_work); |
|
flush_work(&mp->m_flush_inodes_work); |
|
} |
|
|
|
/* Catch misguided souls that try to use this interface on XFS */ |
|
STATIC struct inode * |
|
xfs_fs_alloc_inode( |
|
struct super_block *sb) |
|
{ |
|
BUG(); |
|
return NULL; |
|
} |
|
|
|
#ifdef DEBUG |
|
static void |
|
xfs_check_delalloc( |
|
struct xfs_inode *ip, |
|
int whichfork) |
|
{ |
|
struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); |
|
struct xfs_bmbt_irec got; |
|
struct xfs_iext_cursor icur; |
|
|
|
if (!ifp || !xfs_iext_lookup_extent(ip, ifp, 0, &icur, &got)) |
|
return; |
|
do { |
|
if (isnullstartblock(got.br_startblock)) { |
|
xfs_warn(ip->i_mount, |
|
"ino %llx %s fork has delalloc extent at [0x%llx:0x%llx]", |
|
ip->i_ino, |
|
whichfork == XFS_DATA_FORK ? "data" : "cow", |
|
got.br_startoff, got.br_blockcount); |
|
} |
|
} while (xfs_iext_next_extent(ifp, &icur, &got)); |
|
} |
|
#else |
|
#define xfs_check_delalloc(ip, whichfork) do { } while (0) |
|
#endif |
|
|
|
/* |
|
* Now that the generic code is guaranteed not to be accessing |
|
* the linux inode, we can inactivate and reclaim the inode. |
|
*/ |
|
STATIC void |
|
xfs_fs_destroy_inode( |
|
struct inode *inode) |
|
{ |
|
struct xfs_inode *ip = XFS_I(inode); |
|
|
|
trace_xfs_destroy_inode(ip); |
|
|
|
ASSERT(!rwsem_is_locked(&inode->i_rwsem)); |
|
XFS_STATS_INC(ip->i_mount, vn_rele); |
|
XFS_STATS_INC(ip->i_mount, vn_remove); |
|
|
|
xfs_inactive(ip); |
|
|
|
if (!XFS_FORCED_SHUTDOWN(ip->i_mount) && ip->i_delayed_blks) { |
|
xfs_check_delalloc(ip, XFS_DATA_FORK); |
|
xfs_check_delalloc(ip, XFS_COW_FORK); |
|
ASSERT(0); |
|
} |
|
|
|
XFS_STATS_INC(ip->i_mount, vn_reclaim); |
|
|
|
/* |
|
* We should never get here with one of the reclaim flags already set. |
|
*/ |
|
ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIMABLE)); |
|
ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM)); |
|
|
|
/* |
|
* We always use background reclaim here because even if the inode is |
|
* clean, it still may be under IO and hence we have wait for IO |
|
* completion to occur before we can reclaim the inode. The background |
|
* reclaim path handles this more efficiently than we can here, so |
|
* simply let background reclaim tear down all inodes. |
|
*/ |
|
xfs_inode_mark_reclaimable(ip); |
|
} |
|
|
|
static void |
|
xfs_fs_dirty_inode( |
|
struct inode *inode, |
|
int flag) |
|
{ |
|
struct xfs_inode *ip = XFS_I(inode); |
|
struct xfs_mount *mp = ip->i_mount; |
|
struct xfs_trans *tp; |
|
|
|
if (!(inode->i_sb->s_flags & SB_LAZYTIME)) |
|
return; |
|
if (flag != I_DIRTY_SYNC || !(inode->i_state & I_DIRTY_TIME)) |
|
return; |
|
|
|
if (xfs_trans_alloc(mp, &M_RES(mp)->tr_fsyncts, 0, 0, 0, &tp)) |
|
return; |
|
xfs_ilock(ip, XFS_ILOCK_EXCL); |
|
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); |
|
xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP); |
|
xfs_trans_commit(tp); |
|
} |
|
|
|
/* |
|
* Slab object creation initialisation for the XFS inode. |
|
* This covers only the idempotent fields in the XFS inode; |
|
* all other fields need to be initialised on allocation |
|
* from the slab. This avoids the need to repeatedly initialise |
|
* fields in the xfs inode that left in the initialise state |
|
* when freeing the inode. |
|
*/ |
|
STATIC void |
|
xfs_fs_inode_init_once( |
|
void *inode) |
|
{ |
|
struct xfs_inode *ip = inode; |
|
|
|
memset(ip, 0, sizeof(struct xfs_inode)); |
|
|
|
/* vfs inode */ |
|
inode_init_once(VFS_I(ip)); |
|
|
|
/* xfs inode */ |
|
atomic_set(&ip->i_pincount, 0); |
|
spin_lock_init(&ip->i_flags_lock); |
|
|
|
mrlock_init(&ip->i_mmaplock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, |
|
"xfsino", ip->i_ino); |
|
mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER, |
|
"xfsino", ip->i_ino); |
|
} |
|
|
|
/* |
|
* We do an unlocked check for XFS_IDONTCACHE here because we are already |
|
* serialised against cache hits here via the inode->i_lock and igrab() in |
|
* xfs_iget_cache_hit(). Hence a lookup that might clear this flag will not be |
|
* racing with us, and it avoids needing to grab a spinlock here for every inode |
|
* we drop the final reference on. |
|
*/ |
|
STATIC int |
|
xfs_fs_drop_inode( |
|
struct inode *inode) |
|
{ |
|
struct xfs_inode *ip = XFS_I(inode); |
|
|
|
/* |
|
* If this unlinked inode is in the middle of recovery, don't |
|
* drop the inode just yet; log recovery will take care of |
|
* that. See the comment for this inode flag. |
|
*/ |
|
if (ip->i_flags & XFS_IRECOVERY) { |
|
ASSERT(ip->i_mount->m_log->l_flags & XLOG_RECOVERY_NEEDED); |
|
return 0; |
|
} |
|
|
|
return generic_drop_inode(inode); |
|
} |
|
|
|
static void |
|
xfs_mount_free( |
|
struct xfs_mount *mp) |
|
{ |
|
kfree(mp->m_rtname); |
|
kfree(mp->m_logname); |
|
kmem_free(mp); |
|
} |
|
|
|
STATIC int |
|
xfs_fs_sync_fs( |
|
struct super_block *sb, |
|
int wait) |
|
{ |
|
struct xfs_mount *mp = XFS_M(sb); |
|
|
|
/* |
|
* Doing anything during the async pass would be counterproductive. |
|
*/ |
|
if (!wait) |
|
return 0; |
|
|
|
xfs_log_force(mp, XFS_LOG_SYNC); |
|
if (laptop_mode) { |
|
/* |
|
* The disk must be active because we're syncing. |
|
* We schedule log work now (now that the disk is |
|
* active) instead of later (when it might not be). |
|
*/ |
|
flush_delayed_work(&mp->m_log->l_work); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
STATIC int |
|
xfs_fs_statfs( |
|
struct dentry *dentry, |
|
struct kstatfs *statp) |
|
{ |
|
struct xfs_mount *mp = XFS_M(dentry->d_sb); |
|
xfs_sb_t *sbp = &mp->m_sb; |
|
struct xfs_inode *ip = XFS_I(d_inode(dentry)); |
|
uint64_t fakeinos, id; |
|
uint64_t icount; |
|
uint64_t ifree; |
|
uint64_t fdblocks; |
|
xfs_extlen_t lsize; |
|
int64_t ffree; |
|
|
|
statp->f_type = XFS_SUPER_MAGIC; |
|
statp->f_namelen = MAXNAMELEN - 1; |
|
|
|
id = huge_encode_dev(mp->m_ddev_targp->bt_dev); |
|
statp->f_fsid = u64_to_fsid(id); |
|
|
|
icount = percpu_counter_sum(&mp->m_icount); |
|
ifree = percpu_counter_sum(&mp->m_ifree); |
|
fdblocks = percpu_counter_sum(&mp->m_fdblocks); |
|
|
|
spin_lock(&mp->m_sb_lock); |
|
statp->f_bsize = sbp->sb_blocksize; |
|
lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; |
|
statp->f_blocks = sbp->sb_dblocks - lsize; |
|
spin_unlock(&mp->m_sb_lock); |
|
|
|
/* make sure statp->f_bfree does not underflow */ |
|
statp->f_bfree = max_t(int64_t, fdblocks - mp->m_alloc_set_aside, 0); |
|
statp->f_bavail = statp->f_bfree; |
|
|
|
fakeinos = XFS_FSB_TO_INO(mp, statp->f_bfree); |
|
statp->f_files = min(icount + fakeinos, (uint64_t)XFS_MAXINUMBER); |
|
if (M_IGEO(mp)->maxicount) |
|
statp->f_files = min_t(typeof(statp->f_files), |
|
statp->f_files, |
|
M_IGEO(mp)->maxicount); |
|
|
|
/* If sb_icount overshot maxicount, report actual allocation */ |
|
statp->f_files = max_t(typeof(statp->f_files), |
|
statp->f_files, |
|
sbp->sb_icount); |
|
|
|
/* make sure statp->f_ffree does not underflow */ |
|
ffree = statp->f_files - (icount - ifree); |
|
statp->f_ffree = max_t(int64_t, ffree, 0); |
|
|
|
|
|
if ((ip->i_diflags & XFS_DIFLAG_PROJINHERIT) && |
|
((mp->m_qflags & (XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD))) == |
|
(XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD)) |
|
xfs_qm_statvfs(ip, statp); |
|
|
|
if (XFS_IS_REALTIME_MOUNT(mp) && |
|
(ip->i_diflags & (XFS_DIFLAG_RTINHERIT | XFS_DIFLAG_REALTIME))) { |
|
statp->f_blocks = sbp->sb_rblocks; |
|
statp->f_bavail = statp->f_bfree = |
|
sbp->sb_frextents * sbp->sb_rextsize; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
STATIC void |
|
xfs_save_resvblks(struct xfs_mount *mp) |
|
{ |
|
uint64_t resblks = 0; |
|
|
|
mp->m_resblks_save = mp->m_resblks; |
|
xfs_reserve_blocks(mp, &resblks, NULL); |
|
} |
|
|
|
STATIC void |
|
xfs_restore_resvblks(struct xfs_mount *mp) |
|
{ |
|
uint64_t resblks; |
|
|
|
if (mp->m_resblks_save) { |
|
resblks = mp->m_resblks_save; |
|
mp->m_resblks_save = 0; |
|
} else |
|
resblks = xfs_default_resblks(mp); |
|
|
|
xfs_reserve_blocks(mp, &resblks, NULL); |
|
} |
|
|
|
/* |
|
* Second stage of a freeze. The data is already frozen so we only |
|
* need to take care of the metadata. Once that's done sync the superblock |
|
* to the log to dirty it in case of a crash while frozen. This ensures that we |
|
* will recover the unlinked inode lists on the next mount. |
|
*/ |
|
STATIC int |
|
xfs_fs_freeze( |
|
struct super_block *sb) |
|
{ |
|
struct xfs_mount *mp = XFS_M(sb); |
|
unsigned int flags; |
|
int ret; |
|
|
|
/* |
|
* The filesystem is now frozen far enough that memory reclaim |
|
* cannot safely operate on the filesystem. Hence we need to |
|
* set a GFP_NOFS context here to avoid recursion deadlocks. |
|
*/ |
|
flags = memalloc_nofs_save(); |
|
xfs_blockgc_stop(mp); |
|
xfs_save_resvblks(mp); |
|
ret = xfs_log_quiesce(mp); |
|
memalloc_nofs_restore(flags); |
|
return ret; |
|
} |
|
|
|
STATIC int |
|
xfs_fs_unfreeze( |
|
struct super_block *sb) |
|
{ |
|
struct xfs_mount *mp = XFS_M(sb); |
|
|
|
xfs_restore_resvblks(mp); |
|
xfs_log_work_queue(mp); |
|
xfs_blockgc_start(mp); |
|
return 0; |
|
} |
|
|
|
/* |
|
* This function fills in xfs_mount_t fields based on mount args. |
|
* Note: the superblock _has_ now been read in. |
|
*/ |
|
STATIC int |
|
xfs_finish_flags( |
|
struct xfs_mount *mp) |
|
{ |
|
int ronly = (mp->m_flags & XFS_MOUNT_RDONLY); |
|
|
|
/* Fail a mount where the logbuf is smaller than the log stripe */ |
|
if (xfs_sb_version_haslogv2(&mp->m_sb)) { |
|
if (mp->m_logbsize <= 0 && |
|
mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE) { |
|
mp->m_logbsize = mp->m_sb.sb_logsunit; |
|
} else if (mp->m_logbsize > 0 && |
|
mp->m_logbsize < mp->m_sb.sb_logsunit) { |
|
xfs_warn(mp, |
|
"logbuf size must be greater than or equal to log stripe size"); |
|
return -EINVAL; |
|
} |
|
} else { |
|
/* Fail a mount if the logbuf is larger than 32K */ |
|
if (mp->m_logbsize > XLOG_BIG_RECORD_BSIZE) { |
|
xfs_warn(mp, |
|
"logbuf size for version 1 logs must be 16K or 32K"); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
/* |
|
* V5 filesystems always use attr2 format for attributes. |
|
*/ |
|
if (xfs_sb_version_hascrc(&mp->m_sb) && |
|
(mp->m_flags & XFS_MOUNT_NOATTR2)) { |
|
xfs_warn(mp, "Cannot mount a V5 filesystem as noattr2. " |
|
"attr2 is always enabled for V5 filesystems."); |
|
return -EINVAL; |
|
} |
|
|
|
/* |
|
* mkfs'ed attr2 will turn on attr2 mount unless explicitly |
|
* told by noattr2 to turn it off |
|
*/ |
|
if (xfs_sb_version_hasattr2(&mp->m_sb) && |
|
!(mp->m_flags & XFS_MOUNT_NOATTR2)) |
|
mp->m_flags |= XFS_MOUNT_ATTR2; |
|
|
|
/* |
|
* prohibit r/w mounts of read-only filesystems |
|
*/ |
|
if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { |
|
xfs_warn(mp, |
|
"cannot mount a read-only filesystem as read-write"); |
|
return -EROFS; |
|
} |
|
|
|
if ((mp->m_qflags & (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE)) && |
|
(mp->m_qflags & (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE)) && |
|
!xfs_sb_version_has_pquotino(&mp->m_sb)) { |
|
xfs_warn(mp, |
|
"Super block does not support project and group quota together"); |
|
return -EINVAL; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int |
|
xfs_init_percpu_counters( |
|
struct xfs_mount *mp) |
|
{ |
|
int error; |
|
|
|
error = percpu_counter_init(&mp->m_icount, 0, GFP_KERNEL); |
|
if (error) |
|
return -ENOMEM; |
|
|
|
error = percpu_counter_init(&mp->m_ifree, 0, GFP_KERNEL); |
|
if (error) |
|
goto free_icount; |
|
|
|
error = percpu_counter_init(&mp->m_fdblocks, 0, GFP_KERNEL); |
|
if (error) |
|
goto free_ifree; |
|
|
|
error = percpu_counter_init(&mp->m_delalloc_blks, 0, GFP_KERNEL); |
|
if (error) |
|
goto free_fdblocks; |
|
|
|
return 0; |
|
|
|
free_fdblocks: |
|
percpu_counter_destroy(&mp->m_fdblocks); |
|
free_ifree: |
|
percpu_counter_destroy(&mp->m_ifree); |
|
free_icount: |
|
percpu_counter_destroy(&mp->m_icount); |
|
return -ENOMEM; |
|
} |
|
|
|
void |
|
xfs_reinit_percpu_counters( |
|
struct xfs_mount *mp) |
|
{ |
|
percpu_counter_set(&mp->m_icount, mp->m_sb.sb_icount); |
|
percpu_counter_set(&mp->m_ifree, mp->m_sb.sb_ifree); |
|
percpu_counter_set(&mp->m_fdblocks, mp->m_sb.sb_fdblocks); |
|
} |
|
|
|
static void |
|
xfs_destroy_percpu_counters( |
|
struct xfs_mount *mp) |
|
{ |
|
percpu_counter_destroy(&mp->m_icount); |
|
percpu_counter_destroy(&mp->m_ifree); |
|
percpu_counter_destroy(&mp->m_fdblocks); |
|
ASSERT(XFS_FORCED_SHUTDOWN(mp) || |
|
percpu_counter_sum(&mp->m_delalloc_blks) == 0); |
|
percpu_counter_destroy(&mp->m_delalloc_blks); |
|
} |
|
|
|
static void |
|
xfs_fs_put_super( |
|
struct super_block *sb) |
|
{ |
|
struct xfs_mount *mp = XFS_M(sb); |
|
|
|
/* if ->fill_super failed, we have no mount to tear down */ |
|
if (!sb->s_fs_info) |
|
return; |
|
|
|
xfs_notice(mp, "Unmounting Filesystem"); |
|
xfs_filestream_unmount(mp); |
|
xfs_unmountfs(mp); |
|
|
|
xfs_freesb(mp); |
|
free_percpu(mp->m_stats.xs_stats); |
|
xfs_destroy_percpu_counters(mp); |
|
xfs_destroy_mount_workqueues(mp); |
|
xfs_close_devices(mp); |
|
|
|
sb->s_fs_info = NULL; |
|
xfs_mount_free(mp); |
|
} |
|
|
|
static long |
|
xfs_fs_nr_cached_objects( |
|
struct super_block *sb, |
|
struct shrink_control *sc) |
|
{ |
|
/* Paranoia: catch incorrect calls during mount setup or teardown */ |
|
if (WARN_ON_ONCE(!sb->s_fs_info)) |
|
return 0; |
|
return xfs_reclaim_inodes_count(XFS_M(sb)); |
|
} |
|
|
|
static long |
|
xfs_fs_free_cached_objects( |
|
struct super_block *sb, |
|
struct shrink_control *sc) |
|
{ |
|
return xfs_reclaim_inodes_nr(XFS_M(sb), sc->nr_to_scan); |
|
} |
|
|
|
static const struct super_operations xfs_super_operations = { |
|
.alloc_inode = xfs_fs_alloc_inode, |
|
.destroy_inode = xfs_fs_destroy_inode, |
|
.dirty_inode = xfs_fs_dirty_inode, |
|
.drop_inode = xfs_fs_drop_inode, |
|
.put_super = xfs_fs_put_super, |
|
.sync_fs = xfs_fs_sync_fs, |
|
.freeze_fs = xfs_fs_freeze, |
|
.unfreeze_fs = xfs_fs_unfreeze, |
|
.statfs = xfs_fs_statfs, |
|
.show_options = xfs_fs_show_options, |
|
.nr_cached_objects = xfs_fs_nr_cached_objects, |
|
.free_cached_objects = xfs_fs_free_cached_objects, |
|
}; |
|
|
|
static int |
|
suffix_kstrtoint( |
|
const char *s, |
|
unsigned int base, |
|
int *res) |
|
{ |
|
int last, shift_left_factor = 0, _res; |
|
char *value; |
|
int ret = 0; |
|
|
|
value = kstrdup(s, GFP_KERNEL); |
|
if (!value) |
|
return -ENOMEM; |
|
|
|
last = strlen(value) - 1; |
|
if (value[last] == 'K' || value[last] == 'k') { |
|
shift_left_factor = 10; |
|
value[last] = '\0'; |
|
} |
|
if (value[last] == 'M' || value[last] == 'm') { |
|
shift_left_factor = 20; |
|
value[last] = '\0'; |
|
} |
|
if (value[last] == 'G' || value[last] == 'g') { |
|
shift_left_factor = 30; |
|
value[last] = '\0'; |
|
} |
|
|
|
if (kstrtoint(value, base, &_res)) |
|
ret = -EINVAL; |
|
kfree(value); |
|
*res = _res << shift_left_factor; |
|
return ret; |
|
} |
|
|
|
static inline void |
|
xfs_fs_warn_deprecated( |
|
struct fs_context *fc, |
|
struct fs_parameter *param, |
|
uint64_t flag, |
|
bool value) |
|
{ |
|
/* Don't print the warning if reconfiguring and current mount point |
|
* already had the flag set |
|
*/ |
|
if ((fc->purpose & FS_CONTEXT_FOR_RECONFIGURE) && |
|
!!(XFS_M(fc->root->d_sb)->m_flags & flag) == value) |
|
return; |
|
xfs_warn(fc->s_fs_info, "%s mount option is deprecated.", param->key); |
|
} |
|
|
|
/* |
|
* Set mount state from a mount option. |
|
* |
|
* NOTE: mp->m_super is NULL here! |
|
*/ |
|
static int |
|
xfs_fs_parse_param( |
|
struct fs_context *fc, |
|
struct fs_parameter *param) |
|
{ |
|
struct xfs_mount *parsing_mp = fc->s_fs_info; |
|
struct fs_parse_result result; |
|
int size = 0; |
|
int opt; |
|
|
|
opt = fs_parse(fc, xfs_fs_parameters, param, &result); |
|
if (opt < 0) |
|
return opt; |
|
|
|
switch (opt) { |
|
case Opt_logbufs: |
|
parsing_mp->m_logbufs = result.uint_32; |
|
return 0; |
|
case Opt_logbsize: |
|
if (suffix_kstrtoint(param->string, 10, &parsing_mp->m_logbsize)) |
|
return -EINVAL; |
|
return 0; |
|
case Opt_logdev: |
|
kfree(parsing_mp->m_logname); |
|
parsing_mp->m_logname = kstrdup(param->string, GFP_KERNEL); |
|
if (!parsing_mp->m_logname) |
|
return -ENOMEM; |
|
return 0; |
|
case Opt_rtdev: |
|
kfree(parsing_mp->m_rtname); |
|
parsing_mp->m_rtname = kstrdup(param->string, GFP_KERNEL); |
|
if (!parsing_mp->m_rtname) |
|
return -ENOMEM; |
|
return 0; |
|
case Opt_allocsize: |
|
if (suffix_kstrtoint(param->string, 10, &size)) |
|
return -EINVAL; |
|
parsing_mp->m_allocsize_log = ffs(size) - 1; |
|
parsing_mp->m_flags |= XFS_MOUNT_ALLOCSIZE; |
|
return 0; |
|
case Opt_grpid: |
|
case Opt_bsdgroups: |
|
parsing_mp->m_flags |= XFS_MOUNT_GRPID; |
|
return 0; |
|
case Opt_nogrpid: |
|
case Opt_sysvgroups: |
|
parsing_mp->m_flags &= ~XFS_MOUNT_GRPID; |
|
return 0; |
|
case Opt_wsync: |
|
parsing_mp->m_flags |= XFS_MOUNT_WSYNC; |
|
return 0; |
|
case Opt_norecovery: |
|
parsing_mp->m_flags |= XFS_MOUNT_NORECOVERY; |
|
return 0; |
|
case Opt_noalign: |
|
parsing_mp->m_flags |= XFS_MOUNT_NOALIGN; |
|
return 0; |
|
case Opt_swalloc: |
|
parsing_mp->m_flags |= XFS_MOUNT_SWALLOC; |
|
return 0; |
|
case Opt_sunit: |
|
parsing_mp->m_dalign = result.uint_32; |
|
return 0; |
|
case Opt_swidth: |
|
parsing_mp->m_swidth = result.uint_32; |
|
return 0; |
|
case Opt_inode32: |
|
parsing_mp->m_flags |= XFS_MOUNT_SMALL_INUMS; |
|
return 0; |
|
case Opt_inode64: |
|
parsing_mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
|
return 0; |
|
case Opt_nouuid: |
|
parsing_mp->m_flags |= XFS_MOUNT_NOUUID; |
|
return 0; |
|
case Opt_largeio: |
|
parsing_mp->m_flags |= XFS_MOUNT_LARGEIO; |
|
return 0; |
|
case Opt_nolargeio: |
|
parsing_mp->m_flags &= ~XFS_MOUNT_LARGEIO; |
|
return 0; |
|
case Opt_filestreams: |
|
parsing_mp->m_flags |= XFS_MOUNT_FILESTREAMS; |
|
return 0; |
|
case Opt_noquota: |
|
parsing_mp->m_qflags &= ~XFS_ALL_QUOTA_ACCT; |
|
parsing_mp->m_qflags &= ~XFS_ALL_QUOTA_ENFD; |
|
parsing_mp->m_qflags &= ~XFS_ALL_QUOTA_ACTIVE; |
|
return 0; |
|
case Opt_quota: |
|
case Opt_uquota: |
|
case Opt_usrquota: |
|
parsing_mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE | |
|
XFS_UQUOTA_ENFD); |
|
return 0; |
|
case Opt_qnoenforce: |
|
case Opt_uqnoenforce: |
|
parsing_mp->m_qflags |= (XFS_UQUOTA_ACCT | XFS_UQUOTA_ACTIVE); |
|
parsing_mp->m_qflags &= ~XFS_UQUOTA_ENFD; |
|
return 0; |
|
case Opt_pquota: |
|
case Opt_prjquota: |
|
parsing_mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE | |
|
XFS_PQUOTA_ENFD); |
|
return 0; |
|
case Opt_pqnoenforce: |
|
parsing_mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE); |
|
parsing_mp->m_qflags &= ~XFS_PQUOTA_ENFD; |
|
return 0; |
|
case Opt_gquota: |
|
case Opt_grpquota: |
|
parsing_mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE | |
|
XFS_GQUOTA_ENFD); |
|
return 0; |
|
case Opt_gqnoenforce: |
|
parsing_mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE); |
|
parsing_mp->m_qflags &= ~XFS_GQUOTA_ENFD; |
|
return 0; |
|
case Opt_discard: |
|
parsing_mp->m_flags |= XFS_MOUNT_DISCARD; |
|
return 0; |
|
case Opt_nodiscard: |
|
parsing_mp->m_flags &= ~XFS_MOUNT_DISCARD; |
|
return 0; |
|
#ifdef CONFIG_FS_DAX |
|
case Opt_dax: |
|
xfs_mount_set_dax_mode(parsing_mp, XFS_DAX_ALWAYS); |
|
return 0; |
|
case Opt_dax_enum: |
|
xfs_mount_set_dax_mode(parsing_mp, result.uint_32); |
|
return 0; |
|
#endif |
|
/* Following mount options will be removed in September 2025 */ |
|
case Opt_ikeep: |
|
xfs_fs_warn_deprecated(fc, param, XFS_MOUNT_IKEEP, true); |
|
parsing_mp->m_flags |= XFS_MOUNT_IKEEP; |
|
return 0; |
|
case Opt_noikeep: |
|
xfs_fs_warn_deprecated(fc, param, XFS_MOUNT_IKEEP, false); |
|
parsing_mp->m_flags &= ~XFS_MOUNT_IKEEP; |
|
return 0; |
|
case Opt_attr2: |
|
xfs_fs_warn_deprecated(fc, param, XFS_MOUNT_ATTR2, true); |
|
parsing_mp->m_flags |= XFS_MOUNT_ATTR2; |
|
return 0; |
|
case Opt_noattr2: |
|
xfs_fs_warn_deprecated(fc, param, XFS_MOUNT_NOATTR2, true); |
|
parsing_mp->m_flags &= ~XFS_MOUNT_ATTR2; |
|
parsing_mp->m_flags |= XFS_MOUNT_NOATTR2; |
|
return 0; |
|
default: |
|
xfs_warn(parsing_mp, "unknown mount option [%s].", param->key); |
|
return -EINVAL; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int |
|
xfs_fs_validate_params( |
|
struct xfs_mount *mp) |
|
{ |
|
/* |
|
* no recovery flag requires a read-only mount |
|
*/ |
|
if ((mp->m_flags & XFS_MOUNT_NORECOVERY) && |
|
!(mp->m_flags & XFS_MOUNT_RDONLY)) { |
|
xfs_warn(mp, "no-recovery mounts must be read-only."); |
|
return -EINVAL; |
|
} |
|
|
|
if ((mp->m_flags & XFS_MOUNT_NOALIGN) && |
|
(mp->m_dalign || mp->m_swidth)) { |
|
xfs_warn(mp, |
|
"sunit and swidth options incompatible with the noalign option"); |
|
return -EINVAL; |
|
} |
|
|
|
if (!IS_ENABLED(CONFIG_XFS_QUOTA) && mp->m_qflags != 0) { |
|
xfs_warn(mp, "quota support not available in this kernel."); |
|
return -EINVAL; |
|
} |
|
|
|
if ((mp->m_dalign && !mp->m_swidth) || |
|
(!mp->m_dalign && mp->m_swidth)) { |
|
xfs_warn(mp, "sunit and swidth must be specified together"); |
|
return -EINVAL; |
|
} |
|
|
|
if (mp->m_dalign && (mp->m_swidth % mp->m_dalign != 0)) { |
|
xfs_warn(mp, |
|
"stripe width (%d) must be a multiple of the stripe unit (%d)", |
|
mp->m_swidth, mp->m_dalign); |
|
return -EINVAL; |
|
} |
|
|
|
if (mp->m_logbufs != -1 && |
|
mp->m_logbufs != 0 && |
|
(mp->m_logbufs < XLOG_MIN_ICLOGS || |
|
mp->m_logbufs > XLOG_MAX_ICLOGS)) { |
|
xfs_warn(mp, "invalid logbufs value: %d [not %d-%d]", |
|
mp->m_logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); |
|
return -EINVAL; |
|
} |
|
|
|
if (mp->m_logbsize != -1 && |
|
mp->m_logbsize != 0 && |
|
(mp->m_logbsize < XLOG_MIN_RECORD_BSIZE || |
|
mp->m_logbsize > XLOG_MAX_RECORD_BSIZE || |
|
!is_power_of_2(mp->m_logbsize))) { |
|
xfs_warn(mp, |
|
"invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", |
|
mp->m_logbsize); |
|
return -EINVAL; |
|
} |
|
|
|
if ((mp->m_flags & XFS_MOUNT_ALLOCSIZE) && |
|
(mp->m_allocsize_log > XFS_MAX_IO_LOG || |
|
mp->m_allocsize_log < XFS_MIN_IO_LOG)) { |
|
xfs_warn(mp, "invalid log iosize: %d [not %d-%d]", |
|
mp->m_allocsize_log, XFS_MIN_IO_LOG, XFS_MAX_IO_LOG); |
|
return -EINVAL; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int |
|
xfs_fs_fill_super( |
|
struct super_block *sb, |
|
struct fs_context *fc) |
|
{ |
|
struct xfs_mount *mp = sb->s_fs_info; |
|
struct inode *root; |
|
int flags = 0, error; |
|
|
|
mp->m_super = sb; |
|
|
|
error = xfs_fs_validate_params(mp); |
|
if (error) |
|
goto out_free_names; |
|
|
|
sb_min_blocksize(sb, BBSIZE); |
|
sb->s_xattr = xfs_xattr_handlers; |
|
sb->s_export_op = &xfs_export_operations; |
|
#ifdef CONFIG_XFS_QUOTA |
|
sb->s_qcop = &xfs_quotactl_operations; |
|
sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ; |
|
#endif |
|
sb->s_op = &xfs_super_operations; |
|
|
|
/* |
|
* Delay mount work if the debug hook is set. This is debug |
|
* instrumention to coordinate simulation of xfs mount failures with |
|
* VFS superblock operations |
|
*/ |
|
if (xfs_globals.mount_delay) { |
|
xfs_notice(mp, "Delaying mount for %d seconds.", |
|
xfs_globals.mount_delay); |
|
msleep(xfs_globals.mount_delay * 1000); |
|
} |
|
|
|
if (fc->sb_flags & SB_SILENT) |
|
flags |= XFS_MFSI_QUIET; |
|
|
|
error = xfs_open_devices(mp); |
|
if (error) |
|
goto out_free_names; |
|
|
|
error = xfs_init_mount_workqueues(mp); |
|
if (error) |
|
goto out_close_devices; |
|
|
|
error = xfs_init_percpu_counters(mp); |
|
if (error) |
|
goto out_destroy_workqueues; |
|
|
|
/* Allocate stats memory before we do operations that might use it */ |
|
mp->m_stats.xs_stats = alloc_percpu(struct xfsstats); |
|
if (!mp->m_stats.xs_stats) { |
|
error = -ENOMEM; |
|
goto out_destroy_counters; |
|
} |
|
|
|
error = xfs_readsb(mp, flags); |
|
if (error) |
|
goto out_free_stats; |
|
|
|
error = xfs_finish_flags(mp); |
|
if (error) |
|
goto out_free_sb; |
|
|
|
error = xfs_setup_devices(mp); |
|
if (error) |
|
goto out_free_sb; |
|
|
|
/* V4 support is undergoing deprecation. */ |
|
if (!xfs_sb_version_hascrc(&mp->m_sb)) { |
|
#ifdef CONFIG_XFS_SUPPORT_V4 |
|
xfs_warn_once(mp, |
|
"Deprecated V4 format (crc=0) will not be supported after September 2030."); |
|
#else |
|
xfs_warn(mp, |
|
"Deprecated V4 format (crc=0) not supported by kernel."); |
|
error = -EINVAL; |
|
goto out_free_sb; |
|
#endif |
|
} |
|
|
|
/* Filesystem claims it needs repair, so refuse the mount. */ |
|
if (xfs_sb_version_needsrepair(&mp->m_sb)) { |
|
xfs_warn(mp, "Filesystem needs repair. Please run xfs_repair."); |
|
error = -EFSCORRUPTED; |
|
goto out_free_sb; |
|
} |
|
|
|
/* |
|
* Don't touch the filesystem if a user tool thinks it owns the primary |
|
* superblock. mkfs doesn't clear the flag from secondary supers, so |
|
* we don't check them at all. |
|
*/ |
|
if (mp->m_sb.sb_inprogress) { |
|
xfs_warn(mp, "Offline file system operation in progress!"); |
|
error = -EFSCORRUPTED; |
|
goto out_free_sb; |
|
} |
|
|
|
/* |
|
* Until this is fixed only page-sized or smaller data blocks work. |
|
*/ |
|
if (mp->m_sb.sb_blocksize > PAGE_SIZE) { |
|
xfs_warn(mp, |
|
"File system with blocksize %d bytes. " |
|
"Only pagesize (%ld) or less will currently work.", |
|
mp->m_sb.sb_blocksize, PAGE_SIZE); |
|
error = -ENOSYS; |
|
goto out_free_sb; |
|
} |
|
|
|
/* Ensure this filesystem fits in the page cache limits */ |
|
if (xfs_sb_validate_fsb_count(&mp->m_sb, mp->m_sb.sb_dblocks) || |
|
xfs_sb_validate_fsb_count(&mp->m_sb, mp->m_sb.sb_rblocks)) { |
|
xfs_warn(mp, |
|
"file system too large to be mounted on this system."); |
|
error = -EFBIG; |
|
goto out_free_sb; |
|
} |
|
|
|
/* |
|
* XFS block mappings use 54 bits to store the logical block offset. |
|
* This should suffice to handle the maximum file size that the VFS |
|
* supports (currently 2^63 bytes on 64-bit and ULONG_MAX << PAGE_SHIFT |
|
* bytes on 32-bit), but as XFS and VFS have gotten the s_maxbytes |
|
* calculation wrong on 32-bit kernels in the past, we'll add a WARN_ON |
|
* to check this assertion. |
|
* |
|
* Avoid integer overflow by comparing the maximum bmbt offset to the |
|
* maximum pagecache offset in units of fs blocks. |
|
*/ |
|
if (!xfs_verify_fileoff(mp, XFS_B_TO_FSBT(mp, MAX_LFS_FILESIZE))) { |
|
xfs_warn(mp, |
|
"MAX_LFS_FILESIZE block offset (%llu) exceeds extent map maximum (%llu)!", |
|
XFS_B_TO_FSBT(mp, MAX_LFS_FILESIZE), |
|
XFS_MAX_FILEOFF); |
|
error = -EINVAL; |
|
goto out_free_sb; |
|
} |
|
|
|
error = xfs_filestream_mount(mp); |
|
if (error) |
|
goto out_free_sb; |
|
|
|
/* |
|
* we must configure the block size in the superblock before we run the |
|
* full mount process as the mount process can lookup and cache inodes. |
|
*/ |
|
sb->s_magic = XFS_SUPER_MAGIC; |
|
sb->s_blocksize = mp->m_sb.sb_blocksize; |
|
sb->s_blocksize_bits = ffs(sb->s_blocksize) - 1; |
|
sb->s_maxbytes = MAX_LFS_FILESIZE; |
|
sb->s_max_links = XFS_MAXLINK; |
|
sb->s_time_gran = 1; |
|
if (xfs_sb_version_hasbigtime(&mp->m_sb)) { |
|
sb->s_time_min = xfs_bigtime_to_unix(XFS_BIGTIME_TIME_MIN); |
|
sb->s_time_max = xfs_bigtime_to_unix(XFS_BIGTIME_TIME_MAX); |
|
} else { |
|
sb->s_time_min = XFS_LEGACY_TIME_MIN; |
|
sb->s_time_max = XFS_LEGACY_TIME_MAX; |
|
} |
|
trace_xfs_inode_timestamp_range(mp, sb->s_time_min, sb->s_time_max); |
|
sb->s_iflags |= SB_I_CGROUPWB; |
|
|
|
set_posix_acl_flag(sb); |
|
|
|
/* version 5 superblocks support inode version counters. */ |
|
if (XFS_SB_VERSION_NUM(&mp->m_sb) == XFS_SB_VERSION_5) |
|
sb->s_flags |= SB_I_VERSION; |
|
|
|
if (xfs_sb_version_hasbigtime(&mp->m_sb)) |
|
xfs_warn(mp, |
|
"EXPERIMENTAL big timestamp feature in use. Use at your own risk!"); |
|
|
|
if (mp->m_flags & XFS_MOUNT_DAX_ALWAYS) { |
|
bool rtdev_is_dax = false, datadev_is_dax; |
|
|
|
xfs_warn(mp, |
|
"DAX enabled. Warning: EXPERIMENTAL, use at your own risk"); |
|
|
|
datadev_is_dax = bdev_dax_supported(mp->m_ddev_targp->bt_bdev, |
|
sb->s_blocksize); |
|
if (mp->m_rtdev_targp) |
|
rtdev_is_dax = bdev_dax_supported( |
|
mp->m_rtdev_targp->bt_bdev, sb->s_blocksize); |
|
if (!rtdev_is_dax && !datadev_is_dax) { |
|
xfs_alert(mp, |
|
"DAX unsupported by block device. Turning off DAX."); |
|
xfs_mount_set_dax_mode(mp, XFS_DAX_NEVER); |
|
} |
|
if (xfs_sb_version_hasreflink(&mp->m_sb)) { |
|
xfs_alert(mp, |
|
"DAX and reflink cannot be used together!"); |
|
error = -EINVAL; |
|
goto out_filestream_unmount; |
|
} |
|
} |
|
|
|
if (mp->m_flags & XFS_MOUNT_DISCARD) { |
|
struct request_queue *q = bdev_get_queue(sb->s_bdev); |
|
|
|
if (!blk_queue_discard(q)) { |
|
xfs_warn(mp, "mounting with \"discard\" option, but " |
|
"the device does not support discard"); |
|
mp->m_flags &= ~XFS_MOUNT_DISCARD; |
|
} |
|
} |
|
|
|
if (xfs_sb_version_hasreflink(&mp->m_sb)) { |
|
if (mp->m_sb.sb_rblocks) { |
|
xfs_alert(mp, |
|
"reflink not compatible with realtime device!"); |
|
error = -EINVAL; |
|
goto out_filestream_unmount; |
|
} |
|
|
|
if (xfs_globals.always_cow) { |
|
xfs_info(mp, "using DEBUG-only always_cow mode."); |
|
mp->m_always_cow = true; |
|
} |
|
} |
|
|
|
if (xfs_sb_version_hasrmapbt(&mp->m_sb) && mp->m_sb.sb_rblocks) { |
|
xfs_alert(mp, |
|
"reverse mapping btree not compatible with realtime device!"); |
|
error = -EINVAL; |
|
goto out_filestream_unmount; |
|
} |
|
|
|
if (xfs_sb_version_hasinobtcounts(&mp->m_sb)) |
|
xfs_warn(mp, |
|
"EXPERIMENTAL inode btree counters feature in use. Use at your own risk!"); |
|
|
|
error = xfs_mountfs(mp); |
|
if (error) |
|
goto out_filestream_unmount; |
|
|
|
root = igrab(VFS_I(mp->m_rootip)); |
|
if (!root) { |
|
error = -ENOENT; |
|
goto out_unmount; |
|
} |
|
sb->s_root = d_make_root(root); |
|
if (!sb->s_root) { |
|
error = -ENOMEM; |
|
goto out_unmount; |
|
} |
|
|
|
return 0; |
|
|
|
out_filestream_unmount: |
|
xfs_filestream_unmount(mp); |
|
out_free_sb: |
|
xfs_freesb(mp); |
|
out_free_stats: |
|
free_percpu(mp->m_stats.xs_stats); |
|
out_destroy_counters: |
|
xfs_destroy_percpu_counters(mp); |
|
out_destroy_workqueues: |
|
xfs_destroy_mount_workqueues(mp); |
|
out_close_devices: |
|
xfs_close_devices(mp); |
|
out_free_names: |
|
sb->s_fs_info = NULL; |
|
xfs_mount_free(mp); |
|
return error; |
|
|
|
out_unmount: |
|
xfs_filestream_unmount(mp); |
|
xfs_unmountfs(mp); |
|
goto out_free_sb; |
|
} |
|
|
|
static int |
|
xfs_fs_get_tree( |
|
struct fs_context *fc) |
|
{ |
|
return get_tree_bdev(fc, xfs_fs_fill_super); |
|
} |
|
|
|
static int |
|
xfs_remount_rw( |
|
struct xfs_mount *mp) |
|
{ |
|
struct xfs_sb *sbp = &mp->m_sb; |
|
int error; |
|
|
|
if (mp->m_flags & XFS_MOUNT_NORECOVERY) { |
|
xfs_warn(mp, |
|
"ro->rw transition prohibited on norecovery mount"); |
|
return -EINVAL; |
|
} |
|
|
|
if (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 && |
|
xfs_sb_has_ro_compat_feature(sbp, XFS_SB_FEAT_RO_COMPAT_UNKNOWN)) { |
|
xfs_warn(mp, |
|
"ro->rw transition prohibited on unknown (0x%x) ro-compat filesystem", |
|
(sbp->sb_features_ro_compat & |
|
XFS_SB_FEAT_RO_COMPAT_UNKNOWN)); |
|
return -EINVAL; |
|
} |
|
|
|
mp->m_flags &= ~XFS_MOUNT_RDONLY; |
|
|
|
/* |
|
* If this is the first remount to writeable state we might have some |
|
* superblock changes to update. |
|
*/ |
|
if (mp->m_update_sb) { |
|
error = xfs_sync_sb(mp, false); |
|
if (error) { |
|
xfs_warn(mp, "failed to write sb changes"); |
|
return error; |
|
} |
|
mp->m_update_sb = false; |
|
} |
|
|
|
/* |
|
* Fill out the reserve pool if it is empty. Use the stashed value if |
|
* it is non-zero, otherwise go with the default. |
|
*/ |
|
xfs_restore_resvblks(mp); |
|
xfs_log_work_queue(mp); |
|
|
|
/* Recover any CoW blocks that never got remapped. */ |
|
error = xfs_reflink_recover_cow(mp); |
|
if (error) { |
|
xfs_err(mp, |
|
"Error %d recovering leftover CoW allocations.", error); |
|
xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); |
|
return error; |
|
} |
|
xfs_blockgc_start(mp); |
|
|
|
/* Create the per-AG metadata reservation pool .*/ |
|
error = xfs_fs_reserve_ag_blocks(mp); |
|
if (error && error != -ENOSPC) |
|
return error; |
|
|
|
return 0; |
|
} |
|
|
|
static int |
|
xfs_remount_ro( |
|
struct xfs_mount *mp) |
|
{ |
|
int error; |
|
|
|
/* |
|
* Cancel background eofb scanning so it cannot race with the final |
|
* log force+buftarg wait and deadlock the remount. |
|
*/ |
|
xfs_blockgc_stop(mp); |
|
|
|
/* Get rid of any leftover CoW reservations... */ |
|
error = xfs_blockgc_free_space(mp, NULL); |
|
if (error) { |
|
xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); |
|
return error; |
|
} |
|
|
|
/* Free the per-AG metadata reservation pool. */ |
|
error = xfs_fs_unreserve_ag_blocks(mp); |
|
if (error) { |
|
xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); |
|
return error; |
|
} |
|
|
|
/* |
|
* Before we sync the metadata, we need to free up the reserve block |
|
* pool so that the used block count in the superblock on disk is |
|
* correct at the end of the remount. Stash the current* reserve pool |
|
* size so that if we get remounted rw, we can return it to the same |
|
* size. |
|
*/ |
|
xfs_save_resvblks(mp); |
|
|
|
xfs_log_clean(mp); |
|
mp->m_flags |= XFS_MOUNT_RDONLY; |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* Logically we would return an error here to prevent users from believing |
|
* they might have changed mount options using remount which can't be changed. |
|
* |
|
* But unfortunately mount(8) adds all options from mtab and fstab to the mount |
|
* arguments in some cases so we can't blindly reject options, but have to |
|
* check for each specified option if it actually differs from the currently |
|
* set option and only reject it if that's the case. |
|
* |
|
* Until that is implemented we return success for every remount request, and |
|
* silently ignore all options that we can't actually change. |
|
*/ |
|
static int |
|
xfs_fs_reconfigure( |
|
struct fs_context *fc) |
|
{ |
|
struct xfs_mount *mp = XFS_M(fc->root->d_sb); |
|
struct xfs_mount *new_mp = fc->s_fs_info; |
|
xfs_sb_t *sbp = &mp->m_sb; |
|
int flags = fc->sb_flags; |
|
int error; |
|
|
|
/* version 5 superblocks always support version counters. */ |
|
if (XFS_SB_VERSION_NUM(&mp->m_sb) == XFS_SB_VERSION_5) |
|
fc->sb_flags |= SB_I_VERSION; |
|
|
|
error = xfs_fs_validate_params(new_mp); |
|
if (error) |
|
return error; |
|
|
|
sync_filesystem(mp->m_super); |
|
|
|
/* inode32 -> inode64 */ |
|
if ((mp->m_flags & XFS_MOUNT_SMALL_INUMS) && |
|
!(new_mp->m_flags & XFS_MOUNT_SMALL_INUMS)) { |
|
mp->m_flags &= ~XFS_MOUNT_SMALL_INUMS; |
|
mp->m_maxagi = xfs_set_inode_alloc(mp, sbp->sb_agcount); |
|
} |
|
|
|
/* inode64 -> inode32 */ |
|
if (!(mp->m_flags & XFS_MOUNT_SMALL_INUMS) && |
|
(new_mp->m_flags & XFS_MOUNT_SMALL_INUMS)) { |
|
mp->m_flags |= XFS_MOUNT_SMALL_INUMS; |
|
mp->m_maxagi = xfs_set_inode_alloc(mp, sbp->sb_agcount); |
|
} |
|
|
|
/* ro -> rw */ |
|
if ((mp->m_flags & XFS_MOUNT_RDONLY) && !(flags & SB_RDONLY)) { |
|
error = xfs_remount_rw(mp); |
|
if (error) |
|
return error; |
|
} |
|
|
|
/* rw -> ro */ |
|
if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (flags & SB_RDONLY)) { |
|
error = xfs_remount_ro(mp); |
|
if (error) |
|
return error; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static void xfs_fs_free( |
|
struct fs_context *fc) |
|
{ |
|
struct xfs_mount *mp = fc->s_fs_info; |
|
|
|
/* |
|
* mp is stored in the fs_context when it is initialized. |
|
* mp is transferred to the superblock on a successful mount, |
|
* but if an error occurs before the transfer we have to free |
|
* it here. |
|
*/ |
|
if (mp) |
|
xfs_mount_free(mp); |
|
} |
|
|
|
static const struct fs_context_operations xfs_context_ops = { |
|
.parse_param = xfs_fs_parse_param, |
|
.get_tree = xfs_fs_get_tree, |
|
.reconfigure = xfs_fs_reconfigure, |
|
.free = xfs_fs_free, |
|
}; |
|
|
|
static int xfs_init_fs_context( |
|
struct fs_context *fc) |
|
{ |
|
struct xfs_mount *mp; |
|
|
|
mp = kmem_alloc(sizeof(struct xfs_mount), KM_ZERO); |
|
if (!mp) |
|
return -ENOMEM; |
|
|
|
spin_lock_init(&mp->m_sb_lock); |
|
spin_lock_init(&mp->m_agirotor_lock); |
|
INIT_RADIX_TREE(&mp->m_perag_tree, GFP_ATOMIC); |
|
spin_lock_init(&mp->m_perag_lock); |
|
mutex_init(&mp->m_growlock); |
|
INIT_WORK(&mp->m_flush_inodes_work, xfs_flush_inodes_worker); |
|
INIT_DELAYED_WORK(&mp->m_reclaim_work, xfs_reclaim_worker); |
|
mp->m_kobj.kobject.kset = xfs_kset; |
|
/* |
|
* We don't create the finobt per-ag space reservation until after log |
|
* recovery, so we must set this to true so that an ifree transaction |
|
* started during log recovery will not depend on space reservations |
|
* for finobt expansion. |
|
*/ |
|
mp->m_finobt_nores = true; |
|
|
|
/* |
|
* These can be overridden by the mount option parsing. |
|
*/ |
|
mp->m_logbufs = -1; |
|
mp->m_logbsize = -1; |
|
mp->m_allocsize_log = 16; /* 64k */ |
|
|
|
/* |
|
* Copy binary VFS mount flags we are interested in. |
|
*/ |
|
if (fc->sb_flags & SB_RDONLY) |
|
mp->m_flags |= XFS_MOUNT_RDONLY; |
|
if (fc->sb_flags & SB_DIRSYNC) |
|
mp->m_flags |= XFS_MOUNT_DIRSYNC; |
|
if (fc->sb_flags & SB_SYNCHRONOUS) |
|
mp->m_flags |= XFS_MOUNT_WSYNC; |
|
|
|
fc->s_fs_info = mp; |
|
fc->ops = &xfs_context_ops; |
|
|
|
return 0; |
|
} |
|
|
|
static struct file_system_type xfs_fs_type = { |
|
.owner = THIS_MODULE, |
|
.name = "xfs", |
|
.init_fs_context = xfs_init_fs_context, |
|
.parameters = xfs_fs_parameters, |
|
.kill_sb = kill_block_super, |
|
.fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, |
|
}; |
|
MODULE_ALIAS_FS("xfs"); |
|
|
|
STATIC int __init |
|
xfs_init_zones(void) |
|
{ |
|
xfs_log_ticket_zone = kmem_cache_create("xfs_log_ticket", |
|
sizeof(struct xlog_ticket), |
|
0, 0, NULL); |
|
if (!xfs_log_ticket_zone) |
|
goto out; |
|
|
|
xfs_bmap_free_item_zone = kmem_cache_create("xfs_bmap_free_item", |
|
sizeof(struct xfs_extent_free_item), |
|
0, 0, NULL); |
|
if (!xfs_bmap_free_item_zone) |
|
goto out_destroy_log_ticket_zone; |
|
|
|
xfs_btree_cur_zone = kmem_cache_create("xfs_btree_cur", |
|
sizeof(struct xfs_btree_cur), |
|
0, 0, NULL); |
|
if (!xfs_btree_cur_zone) |
|
goto out_destroy_bmap_free_item_zone; |
|
|
|
xfs_da_state_zone = kmem_cache_create("xfs_da_state", |
|
sizeof(struct xfs_da_state), |
|
0, 0, NULL); |
|
if (!xfs_da_state_zone) |
|
goto out_destroy_btree_cur_zone; |
|
|
|
xfs_ifork_zone = kmem_cache_create("xfs_ifork", |
|
sizeof(struct xfs_ifork), |
|
0, 0, NULL); |
|
if (!xfs_ifork_zone) |
|
goto out_destroy_da_state_zone; |
|
|
|
xfs_trans_zone = kmem_cache_create("xfs_trans", |
|
sizeof(struct xfs_trans), |
|
0, 0, NULL); |
|
if (!xfs_trans_zone) |
|
goto out_destroy_ifork_zone; |
|
|
|
|
|
/* |
|
* The size of the zone allocated buf log item is the maximum |
|
* size possible under XFS. This wastes a little bit of memory, |
|
* but it is much faster. |
|
*/ |
|
xfs_buf_item_zone = kmem_cache_create("xfs_buf_item", |
|
sizeof(struct xfs_buf_log_item), |
|
0, 0, NULL); |
|
if (!xfs_buf_item_zone) |
|
goto out_destroy_trans_zone; |
|
|
|
xfs_efd_zone = kmem_cache_create("xfs_efd_item", |
|
(sizeof(struct xfs_efd_log_item) + |
|
(XFS_EFD_MAX_FAST_EXTENTS - 1) * |
|
sizeof(struct xfs_extent)), |
|
0, 0, NULL); |
|
if (!xfs_efd_zone) |
|
goto out_destroy_buf_item_zone; |
|
|
|
xfs_efi_zone = kmem_cache_create("xfs_efi_item", |
|
(sizeof(struct xfs_efi_log_item) + |
|
(XFS_EFI_MAX_FAST_EXTENTS - 1) * |
|
sizeof(struct xfs_extent)), |
|
0, 0, NULL); |
|
if (!xfs_efi_zone) |
|
goto out_destroy_efd_zone; |
|
|
|
xfs_inode_zone = kmem_cache_create("xfs_inode", |
|
sizeof(struct xfs_inode), 0, |
|
(SLAB_HWCACHE_ALIGN | |
|
SLAB_RECLAIM_ACCOUNT | |
|
SLAB_MEM_SPREAD | SLAB_ACCOUNT), |
|
xfs_fs_inode_init_once); |
|
if (!xfs_inode_zone) |
|
goto out_destroy_efi_zone; |
|
|
|
xfs_ili_zone = kmem_cache_create("xfs_ili", |
|
sizeof(struct xfs_inode_log_item), 0, |
|
SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD, |
|
NULL); |
|
if (!xfs_ili_zone) |
|
goto out_destroy_inode_zone; |
|
|
|
xfs_icreate_zone = kmem_cache_create("xfs_icr", |
|
sizeof(struct xfs_icreate_item), |
|
0, 0, NULL); |
|
if (!xfs_icreate_zone) |
|
goto out_destroy_ili_zone; |
|
|
|
xfs_rud_zone = kmem_cache_create("xfs_rud_item", |
|
sizeof(struct xfs_rud_log_item), |
|
0, 0, NULL); |
|
if (!xfs_rud_zone) |
|
goto out_destroy_icreate_zone; |
|
|
|
xfs_rui_zone = kmem_cache_create("xfs_rui_item", |
|
xfs_rui_log_item_sizeof(XFS_RUI_MAX_FAST_EXTENTS), |
|
0, 0, NULL); |
|
if (!xfs_rui_zone) |
|
goto out_destroy_rud_zone; |
|
|
|
xfs_cud_zone = kmem_cache_create("xfs_cud_item", |
|
sizeof(struct xfs_cud_log_item), |
|
0, 0, NULL); |
|
if (!xfs_cud_zone) |
|
goto out_destroy_rui_zone; |
|
|
|
xfs_cui_zone = kmem_cache_create("xfs_cui_item", |
|
xfs_cui_log_item_sizeof(XFS_CUI_MAX_FAST_EXTENTS), |
|
0, 0, NULL); |
|
if (!xfs_cui_zone) |
|
goto out_destroy_cud_zone; |
|
|
|
xfs_bud_zone = kmem_cache_create("xfs_bud_item", |
|
sizeof(struct xfs_bud_log_item), |
|
0, 0, NULL); |
|
if (!xfs_bud_zone) |
|
goto out_destroy_cui_zone; |
|
|
|
xfs_bui_zone = kmem_cache_create("xfs_bui_item", |
|
xfs_bui_log_item_sizeof(XFS_BUI_MAX_FAST_EXTENTS), |
|
0, 0, NULL); |
|
if (!xfs_bui_zone) |
|
goto out_destroy_bud_zone; |
|
|
|
return 0; |
|
|
|
out_destroy_bud_zone: |
|
kmem_cache_destroy(xfs_bud_zone); |
|
out_destroy_cui_zone: |
|
kmem_cache_destroy(xfs_cui_zone); |
|
out_destroy_cud_zone: |
|
kmem_cache_destroy(xfs_cud_zone); |
|
out_destroy_rui_zone: |
|
kmem_cache_destroy(xfs_rui_zone); |
|
out_destroy_rud_zone: |
|
kmem_cache_destroy(xfs_rud_zone); |
|
out_destroy_icreate_zone: |
|
kmem_cache_destroy(xfs_icreate_zone); |
|
out_destroy_ili_zone: |
|
kmem_cache_destroy(xfs_ili_zone); |
|
out_destroy_inode_zone: |
|
kmem_cache_destroy(xfs_inode_zone); |
|
out_destroy_efi_zone: |
|
kmem_cache_destroy(xfs_efi_zone); |
|
out_destroy_efd_zone: |
|
kmem_cache_destroy(xfs_efd_zone); |
|
out_destroy_buf_item_zone: |
|
kmem_cache_destroy(xfs_buf_item_zone); |
|
out_destroy_trans_zone: |
|
kmem_cache_destroy(xfs_trans_zone); |
|
out_destroy_ifork_zone: |
|
kmem_cache_destroy(xfs_ifork_zone); |
|
out_destroy_da_state_zone: |
|
kmem_cache_destroy(xfs_da_state_zone); |
|
out_destroy_btree_cur_zone: |
|
kmem_cache_destroy(xfs_btree_cur_zone); |
|
out_destroy_bmap_free_item_zone: |
|
kmem_cache_destroy(xfs_bmap_free_item_zone); |
|
out_destroy_log_ticket_zone: |
|
kmem_cache_destroy(xfs_log_ticket_zone); |
|
out: |
|
return -ENOMEM; |
|
} |
|
|
|
STATIC void |
|
xfs_destroy_zones(void) |
|
{ |
|
/* |
|
* Make sure all delayed rcu free are flushed before we |
|
* destroy caches. |
|
*/ |
|
rcu_barrier(); |
|
kmem_cache_destroy(xfs_bui_zone); |
|
kmem_cache_destroy(xfs_bud_zone); |
|
kmem_cache_destroy(xfs_cui_zone); |
|
kmem_cache_destroy(xfs_cud_zone); |
|
kmem_cache_destroy(xfs_rui_zone); |
|
kmem_cache_destroy(xfs_rud_zone); |
|
kmem_cache_destroy(xfs_icreate_zone); |
|
kmem_cache_destroy(xfs_ili_zone); |
|
kmem_cache_destroy(xfs_inode_zone); |
|
kmem_cache_destroy(xfs_efi_zone); |
|
kmem_cache_destroy(xfs_efd_zone); |
|
kmem_cache_destroy(xfs_buf_item_zone); |
|
kmem_cache_destroy(xfs_trans_zone); |
|
kmem_cache_destroy(xfs_ifork_zone); |
|
kmem_cache_destroy(xfs_da_state_zone); |
|
kmem_cache_destroy(xfs_btree_cur_zone); |
|
kmem_cache_destroy(xfs_bmap_free_item_zone); |
|
kmem_cache_destroy(xfs_log_ticket_zone); |
|
} |
|
|
|
STATIC int __init |
|
xfs_init_workqueues(void) |
|
{ |
|
/* |
|
* The allocation workqueue can be used in memory reclaim situations |
|
* (writepage path), and parallelism is only limited by the number of |
|
* AGs in all the filesystems mounted. Hence use the default large |
|
* max_active value for this workqueue. |
|
*/ |
|
xfs_alloc_wq = alloc_workqueue("xfsalloc", |
|
XFS_WQFLAGS(WQ_MEM_RECLAIM | WQ_FREEZABLE), 0); |
|
if (!xfs_alloc_wq) |
|
return -ENOMEM; |
|
|
|
xfs_discard_wq = alloc_workqueue("xfsdiscard", XFS_WQFLAGS(WQ_UNBOUND), |
|
0); |
|
if (!xfs_discard_wq) |
|
goto out_free_alloc_wq; |
|
|
|
return 0; |
|
out_free_alloc_wq: |
|
destroy_workqueue(xfs_alloc_wq); |
|
return -ENOMEM; |
|
} |
|
|
|
STATIC void |
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xfs_destroy_workqueues(void) |
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{ |
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destroy_workqueue(xfs_discard_wq); |
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destroy_workqueue(xfs_alloc_wq); |
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} |
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STATIC int __init |
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init_xfs_fs(void) |
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{ |
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int error; |
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xfs_check_ondisk_structs(); |
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printk(KERN_INFO XFS_VERSION_STRING " with " |
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XFS_BUILD_OPTIONS " enabled\n"); |
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xfs_dir_startup(); |
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error = xfs_init_zones(); |
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if (error) |
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goto out; |
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error = xfs_init_workqueues(); |
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if (error) |
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goto out_destroy_zones; |
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error = xfs_mru_cache_init(); |
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if (error) |
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goto out_destroy_wq; |
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error = xfs_buf_init(); |
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if (error) |
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goto out_mru_cache_uninit; |
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error = xfs_init_procfs(); |
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if (error) |
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goto out_buf_terminate; |
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error = xfs_sysctl_register(); |
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if (error) |
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goto out_cleanup_procfs; |
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xfs_kset = kset_create_and_add("xfs", NULL, fs_kobj); |
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if (!xfs_kset) { |
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error = -ENOMEM; |
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goto out_sysctl_unregister; |
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} |
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xfsstats.xs_kobj.kobject.kset = xfs_kset; |
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xfsstats.xs_stats = alloc_percpu(struct xfsstats); |
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if (!xfsstats.xs_stats) { |
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error = -ENOMEM; |
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goto out_kset_unregister; |
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} |
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error = xfs_sysfs_init(&xfsstats.xs_kobj, &xfs_stats_ktype, NULL, |
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"stats"); |
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if (error) |
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goto out_free_stats; |
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#ifdef DEBUG |
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xfs_dbg_kobj.kobject.kset = xfs_kset; |
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error = xfs_sysfs_init(&xfs_dbg_kobj, &xfs_dbg_ktype, NULL, "debug"); |
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if (error) |
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goto out_remove_stats_kobj; |
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#endif |
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error = xfs_qm_init(); |
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if (error) |
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goto out_remove_dbg_kobj; |
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error = register_filesystem(&xfs_fs_type); |
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if (error) |
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goto out_qm_exit; |
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return 0; |
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out_qm_exit: |
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xfs_qm_exit(); |
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out_remove_dbg_kobj: |
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#ifdef DEBUG |
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xfs_sysfs_del(&xfs_dbg_kobj); |
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out_remove_stats_kobj: |
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#endif |
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xfs_sysfs_del(&xfsstats.xs_kobj); |
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out_free_stats: |
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free_percpu(xfsstats.xs_stats); |
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out_kset_unregister: |
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kset_unregister(xfs_kset); |
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out_sysctl_unregister: |
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xfs_sysctl_unregister(); |
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out_cleanup_procfs: |
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xfs_cleanup_procfs(); |
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out_buf_terminate: |
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xfs_buf_terminate(); |
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out_mru_cache_uninit: |
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xfs_mru_cache_uninit(); |
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out_destroy_wq: |
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xfs_destroy_workqueues(); |
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out_destroy_zones: |
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xfs_destroy_zones(); |
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out: |
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return error; |
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} |
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|
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STATIC void __exit |
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exit_xfs_fs(void) |
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{ |
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xfs_qm_exit(); |
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unregister_filesystem(&xfs_fs_type); |
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#ifdef DEBUG |
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xfs_sysfs_del(&xfs_dbg_kobj); |
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#endif |
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xfs_sysfs_del(&xfsstats.xs_kobj); |
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free_percpu(xfsstats.xs_stats); |
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kset_unregister(xfs_kset); |
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xfs_sysctl_unregister(); |
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xfs_cleanup_procfs(); |
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xfs_buf_terminate(); |
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xfs_mru_cache_uninit(); |
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xfs_destroy_workqueues(); |
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xfs_destroy_zones(); |
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xfs_uuid_table_free(); |
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} |
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|
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module_init(init_xfs_fs); |
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module_exit(exit_xfs_fs); |
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MODULE_AUTHOR("Silicon Graphics, Inc."); |
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MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled"); |
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MODULE_LICENSE("GPL");
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