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1314 lines
36 KiB
1314 lines
36 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
/* |
|
* Implementation of operations over local quota file |
|
*/ |
|
|
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#include <linux/fs.h> |
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#include <linux/slab.h> |
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#include <linux/quota.h> |
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#include <linux/quotaops.h> |
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#include <linux/module.h> |
|
|
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#include <cluster/masklog.h> |
|
|
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#include "ocfs2_fs.h" |
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#include "ocfs2.h" |
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#include "inode.h" |
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#include "alloc.h" |
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#include "file.h" |
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#include "buffer_head_io.h" |
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#include "journal.h" |
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#include "sysfile.h" |
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#include "dlmglue.h" |
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#include "quota.h" |
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#include "uptodate.h" |
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#include "super.h" |
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#include "ocfs2_trace.h" |
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|
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/* Number of local quota structures per block */ |
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static inline unsigned int ol_quota_entries_per_block(struct super_block *sb) |
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{ |
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return ((sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE) / |
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sizeof(struct ocfs2_local_disk_dqblk)); |
|
} |
|
|
|
/* Number of blocks with entries in one chunk */ |
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static inline unsigned int ol_chunk_blocks(struct super_block *sb) |
|
{ |
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return ((sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) - |
|
OCFS2_QBLK_RESERVED_SPACE) << 3) / |
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ol_quota_entries_per_block(sb); |
|
} |
|
|
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/* Number of entries in a chunk bitmap */ |
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static unsigned int ol_chunk_entries(struct super_block *sb) |
|
{ |
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return ol_chunk_blocks(sb) * ol_quota_entries_per_block(sb); |
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} |
|
|
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/* Offset of the chunk in quota file */ |
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static unsigned int ol_quota_chunk_block(struct super_block *sb, int c) |
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{ |
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/* 1 block for local quota file info, 1 block per chunk for chunk info */ |
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return 1 + (ol_chunk_blocks(sb) + 1) * c; |
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} |
|
|
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static unsigned int ol_dqblk_block(struct super_block *sb, int c, int off) |
|
{ |
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int epb = ol_quota_entries_per_block(sb); |
|
|
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return ol_quota_chunk_block(sb, c) + 1 + off / epb; |
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} |
|
|
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static unsigned int ol_dqblk_block_off(struct super_block *sb, int c, int off) |
|
{ |
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int epb = ol_quota_entries_per_block(sb); |
|
|
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return (off % epb) * sizeof(struct ocfs2_local_disk_dqblk); |
|
} |
|
|
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/* Offset of the dquot structure in the quota file */ |
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static loff_t ol_dqblk_off(struct super_block *sb, int c, int off) |
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{ |
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return (ol_dqblk_block(sb, c, off) << sb->s_blocksize_bits) + |
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ol_dqblk_block_off(sb, c, off); |
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} |
|
|
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static inline unsigned int ol_dqblk_block_offset(struct super_block *sb, loff_t off) |
|
{ |
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return off & ((1 << sb->s_blocksize_bits) - 1); |
|
} |
|
|
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/* Compute offset in the chunk of a structure with the given offset */ |
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static int ol_dqblk_chunk_off(struct super_block *sb, int c, loff_t off) |
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{ |
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int epb = ol_quota_entries_per_block(sb); |
|
|
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return ((off >> sb->s_blocksize_bits) - |
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ol_quota_chunk_block(sb, c) - 1) * epb |
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+ ((unsigned int)(off & ((1 << sb->s_blocksize_bits) - 1))) / |
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sizeof(struct ocfs2_local_disk_dqblk); |
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} |
|
|
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/* Write bufferhead into the fs */ |
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static int ocfs2_modify_bh(struct inode *inode, struct buffer_head *bh, |
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void (*modify)(struct buffer_head *, void *), void *private) |
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{ |
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struct super_block *sb = inode->i_sb; |
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handle_t *handle; |
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int status; |
|
|
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handle = ocfs2_start_trans(OCFS2_SB(sb), |
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OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); |
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if (IS_ERR(handle)) { |
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status = PTR_ERR(handle); |
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mlog_errno(status); |
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return status; |
|
} |
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status = ocfs2_journal_access_dq(handle, INODE_CACHE(inode), bh, |
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OCFS2_JOURNAL_ACCESS_WRITE); |
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if (status < 0) { |
|
mlog_errno(status); |
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ocfs2_commit_trans(OCFS2_SB(sb), handle); |
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return status; |
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} |
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lock_buffer(bh); |
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modify(bh, private); |
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unlock_buffer(bh); |
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ocfs2_journal_dirty(handle, bh); |
|
|
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status = ocfs2_commit_trans(OCFS2_SB(sb), handle); |
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if (status < 0) { |
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mlog_errno(status); |
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return status; |
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} |
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return 0; |
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} |
|
|
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/* |
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* Read quota block from a given logical offset. |
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* |
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* This function acquires ip_alloc_sem and thus it must not be called with a |
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* transaction started. |
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*/ |
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static int ocfs2_read_quota_block(struct inode *inode, u64 v_block, |
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struct buffer_head **bh) |
|
{ |
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int rc = 0; |
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struct buffer_head *tmp = *bh; |
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|
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if (i_size_read(inode) >> inode->i_sb->s_blocksize_bits <= v_block) |
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return ocfs2_error(inode->i_sb, |
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"Quota file %llu is probably corrupted! Requested to read block %Lu but file has size only %Lu\n", |
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(unsigned long long)OCFS2_I(inode)->ip_blkno, |
|
(unsigned long long)v_block, |
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(unsigned long long)i_size_read(inode)); |
|
|
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rc = ocfs2_read_virt_blocks(inode, v_block, 1, &tmp, 0, |
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ocfs2_validate_quota_block); |
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if (rc) |
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mlog_errno(rc); |
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|
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/* If ocfs2_read_virt_blocks() got us a new bh, pass it up. */ |
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if (!rc && !*bh) |
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*bh = tmp; |
|
|
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return rc; |
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} |
|
|
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/* Check whether we understand format of quota files */ |
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static int ocfs2_local_check_quota_file(struct super_block *sb, int type) |
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{ |
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unsigned int lmagics[OCFS2_MAXQUOTAS] = OCFS2_LOCAL_QMAGICS; |
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unsigned int lversions[OCFS2_MAXQUOTAS] = OCFS2_LOCAL_QVERSIONS; |
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unsigned int gmagics[OCFS2_MAXQUOTAS] = OCFS2_GLOBAL_QMAGICS; |
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unsigned int gversions[OCFS2_MAXQUOTAS] = OCFS2_GLOBAL_QVERSIONS; |
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unsigned int ino[OCFS2_MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE, |
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GROUP_QUOTA_SYSTEM_INODE }; |
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struct buffer_head *bh = NULL; |
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struct inode *linode = sb_dqopt(sb)->files[type]; |
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struct inode *ginode = NULL; |
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struct ocfs2_disk_dqheader *dqhead; |
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int status, ret = 0; |
|
|
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/* First check whether we understand local quota file */ |
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status = ocfs2_read_quota_block(linode, 0, &bh); |
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if (status) { |
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mlog_errno(status); |
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mlog(ML_ERROR, "failed to read quota file header (type=%d)\n", |
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type); |
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goto out_err; |
|
} |
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dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data); |
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if (le32_to_cpu(dqhead->dqh_magic) != lmagics[type]) { |
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mlog(ML_ERROR, "quota file magic does not match (%u != %u)," |
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" type=%d\n", le32_to_cpu(dqhead->dqh_magic), |
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lmagics[type], type); |
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goto out_err; |
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} |
|
if (le32_to_cpu(dqhead->dqh_version) != lversions[type]) { |
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mlog(ML_ERROR, "quota file version does not match (%u != %u)," |
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" type=%d\n", le32_to_cpu(dqhead->dqh_version), |
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lversions[type], type); |
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goto out_err; |
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} |
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brelse(bh); |
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bh = NULL; |
|
|
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/* Next check whether we understand global quota file */ |
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ginode = ocfs2_get_system_file_inode(OCFS2_SB(sb), ino[type], |
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OCFS2_INVALID_SLOT); |
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if (!ginode) { |
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mlog(ML_ERROR, "cannot get global quota file inode " |
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"(type=%d)\n", type); |
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goto out_err; |
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} |
|
/* Since the header is read only, we don't care about locking */ |
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status = ocfs2_read_quota_block(ginode, 0, &bh); |
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if (status) { |
|
mlog_errno(status); |
|
mlog(ML_ERROR, "failed to read global quota file header " |
|
"(type=%d)\n", type); |
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goto out_err; |
|
} |
|
dqhead = (struct ocfs2_disk_dqheader *)(bh->b_data); |
|
if (le32_to_cpu(dqhead->dqh_magic) != gmagics[type]) { |
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mlog(ML_ERROR, "global quota file magic does not match " |
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"(%u != %u), type=%d\n", |
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le32_to_cpu(dqhead->dqh_magic), gmagics[type], type); |
|
goto out_err; |
|
} |
|
if (le32_to_cpu(dqhead->dqh_version) != gversions[type]) { |
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mlog(ML_ERROR, "global quota file version does not match " |
|
"(%u != %u), type=%d\n", |
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le32_to_cpu(dqhead->dqh_version), gversions[type], |
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type); |
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goto out_err; |
|
} |
|
|
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ret = 1; |
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out_err: |
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brelse(bh); |
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iput(ginode); |
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return ret; |
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} |
|
|
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/* Release given list of quota file chunks */ |
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static void ocfs2_release_local_quota_bitmaps(struct list_head *head) |
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{ |
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struct ocfs2_quota_chunk *pos, *next; |
|
|
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list_for_each_entry_safe(pos, next, head, qc_chunk) { |
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list_del(&pos->qc_chunk); |
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brelse(pos->qc_headerbh); |
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kmem_cache_free(ocfs2_qf_chunk_cachep, pos); |
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} |
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} |
|
|
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/* Load quota bitmaps into memory */ |
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static int ocfs2_load_local_quota_bitmaps(struct inode *inode, |
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struct ocfs2_local_disk_dqinfo *ldinfo, |
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struct list_head *head) |
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{ |
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struct ocfs2_quota_chunk *newchunk; |
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int i, status; |
|
|
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INIT_LIST_HEAD(head); |
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for (i = 0; i < le32_to_cpu(ldinfo->dqi_chunks); i++) { |
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newchunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS); |
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if (!newchunk) { |
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ocfs2_release_local_quota_bitmaps(head); |
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return -ENOMEM; |
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} |
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newchunk->qc_num = i; |
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newchunk->qc_headerbh = NULL; |
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status = ocfs2_read_quota_block(inode, |
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ol_quota_chunk_block(inode->i_sb, i), |
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&newchunk->qc_headerbh); |
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if (status) { |
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mlog_errno(status); |
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kmem_cache_free(ocfs2_qf_chunk_cachep, newchunk); |
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ocfs2_release_local_quota_bitmaps(head); |
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return status; |
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} |
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list_add_tail(&newchunk->qc_chunk, head); |
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} |
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return 0; |
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} |
|
|
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static void olq_update_info(struct buffer_head *bh, void *private) |
|
{ |
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struct mem_dqinfo *info = private; |
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struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; |
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struct ocfs2_local_disk_dqinfo *ldinfo; |
|
|
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ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + |
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OCFS2_LOCAL_INFO_OFF); |
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spin_lock(&dq_data_lock); |
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ldinfo->dqi_flags = cpu_to_le32(oinfo->dqi_flags); |
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ldinfo->dqi_chunks = cpu_to_le32(oinfo->dqi_chunks); |
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ldinfo->dqi_blocks = cpu_to_le32(oinfo->dqi_blocks); |
|
spin_unlock(&dq_data_lock); |
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} |
|
|
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static int ocfs2_add_recovery_chunk(struct super_block *sb, |
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struct ocfs2_local_disk_chunk *dchunk, |
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int chunk, |
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struct list_head *head) |
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{ |
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struct ocfs2_recovery_chunk *rc; |
|
|
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rc = kmalloc(sizeof(struct ocfs2_recovery_chunk), GFP_NOFS); |
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if (!rc) |
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return -ENOMEM; |
|
rc->rc_chunk = chunk; |
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rc->rc_bitmap = kmalloc(sb->s_blocksize, GFP_NOFS); |
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if (!rc->rc_bitmap) { |
|
kfree(rc); |
|
return -ENOMEM; |
|
} |
|
memcpy(rc->rc_bitmap, dchunk->dqc_bitmap, |
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(ol_chunk_entries(sb) + 7) >> 3); |
|
list_add_tail(&rc->rc_list, head); |
|
return 0; |
|
} |
|
|
|
static void free_recovery_list(struct list_head *head) |
|
{ |
|
struct ocfs2_recovery_chunk *next; |
|
struct ocfs2_recovery_chunk *rchunk; |
|
|
|
list_for_each_entry_safe(rchunk, next, head, rc_list) { |
|
list_del(&rchunk->rc_list); |
|
kfree(rchunk->rc_bitmap); |
|
kfree(rchunk); |
|
} |
|
} |
|
|
|
void ocfs2_free_quota_recovery(struct ocfs2_quota_recovery *rec) |
|
{ |
|
int type; |
|
|
|
for (type = 0; type < OCFS2_MAXQUOTAS; type++) |
|
free_recovery_list(&(rec->r_list[type])); |
|
kfree(rec); |
|
} |
|
|
|
/* Load entries in our quota file we have to recover*/ |
|
static int ocfs2_recovery_load_quota(struct inode *lqinode, |
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struct ocfs2_local_disk_dqinfo *ldinfo, |
|
int type, |
|
struct list_head *head) |
|
{ |
|
struct super_block *sb = lqinode->i_sb; |
|
struct buffer_head *hbh; |
|
struct ocfs2_local_disk_chunk *dchunk; |
|
int i, chunks = le32_to_cpu(ldinfo->dqi_chunks); |
|
int status = 0; |
|
|
|
for (i = 0; i < chunks; i++) { |
|
hbh = NULL; |
|
status = ocfs2_read_quota_block(lqinode, |
|
ol_quota_chunk_block(sb, i), |
|
&hbh); |
|
if (status) { |
|
mlog_errno(status); |
|
break; |
|
} |
|
dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data; |
|
if (le32_to_cpu(dchunk->dqc_free) < ol_chunk_entries(sb)) |
|
status = ocfs2_add_recovery_chunk(sb, dchunk, i, head); |
|
brelse(hbh); |
|
if (status < 0) |
|
break; |
|
} |
|
if (status < 0) |
|
free_recovery_list(head); |
|
return status; |
|
} |
|
|
|
static struct ocfs2_quota_recovery *ocfs2_alloc_quota_recovery(void) |
|
{ |
|
int type; |
|
struct ocfs2_quota_recovery *rec; |
|
|
|
rec = kmalloc(sizeof(struct ocfs2_quota_recovery), GFP_NOFS); |
|
if (!rec) |
|
return NULL; |
|
for (type = 0; type < OCFS2_MAXQUOTAS; type++) |
|
INIT_LIST_HEAD(&(rec->r_list[type])); |
|
return rec; |
|
} |
|
|
|
/* Load information we need for quota recovery into memory */ |
|
struct ocfs2_quota_recovery *ocfs2_begin_quota_recovery( |
|
struct ocfs2_super *osb, |
|
int slot_num) |
|
{ |
|
unsigned int feature[OCFS2_MAXQUOTAS] = { |
|
OCFS2_FEATURE_RO_COMPAT_USRQUOTA, |
|
OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; |
|
unsigned int ino[OCFS2_MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, |
|
LOCAL_GROUP_QUOTA_SYSTEM_INODE }; |
|
struct super_block *sb = osb->sb; |
|
struct ocfs2_local_disk_dqinfo *ldinfo; |
|
struct inode *lqinode; |
|
struct buffer_head *bh; |
|
int type; |
|
int status = 0; |
|
struct ocfs2_quota_recovery *rec; |
|
|
|
printk(KERN_NOTICE "ocfs2: Beginning quota recovery on device (%s) for " |
|
"slot %u\n", osb->dev_str, slot_num); |
|
|
|
rec = ocfs2_alloc_quota_recovery(); |
|
if (!rec) |
|
return ERR_PTR(-ENOMEM); |
|
/* First init... */ |
|
|
|
for (type = 0; type < OCFS2_MAXQUOTAS; type++) { |
|
if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) |
|
continue; |
|
/* At this point, journal of the slot is already replayed so |
|
* we can trust metadata and data of the quota file */ |
|
lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num); |
|
if (!lqinode) { |
|
status = -ENOENT; |
|
goto out; |
|
} |
|
status = ocfs2_inode_lock_full(lqinode, NULL, 1, |
|
OCFS2_META_LOCK_RECOVERY); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out_put; |
|
} |
|
/* Now read local header */ |
|
bh = NULL; |
|
status = ocfs2_read_quota_block(lqinode, 0, &bh); |
|
if (status) { |
|
mlog_errno(status); |
|
mlog(ML_ERROR, "failed to read quota file info header " |
|
"(slot=%d type=%d)\n", slot_num, type); |
|
goto out_lock; |
|
} |
|
ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + |
|
OCFS2_LOCAL_INFO_OFF); |
|
status = ocfs2_recovery_load_quota(lqinode, ldinfo, type, |
|
&rec->r_list[type]); |
|
brelse(bh); |
|
out_lock: |
|
ocfs2_inode_unlock(lqinode, 1); |
|
out_put: |
|
iput(lqinode); |
|
if (status < 0) |
|
break; |
|
} |
|
out: |
|
if (status < 0) { |
|
ocfs2_free_quota_recovery(rec); |
|
rec = ERR_PTR(status); |
|
} |
|
return rec; |
|
} |
|
|
|
/* Sync changes in local quota file into global quota file and |
|
* reinitialize local quota file. |
|
* The function expects local quota file to be already locked and |
|
* s_umount locked in shared mode. */ |
|
static int ocfs2_recover_local_quota_file(struct inode *lqinode, |
|
int type, |
|
struct ocfs2_quota_recovery *rec) |
|
{ |
|
struct super_block *sb = lqinode->i_sb; |
|
struct ocfs2_mem_dqinfo *oinfo = sb_dqinfo(sb, type)->dqi_priv; |
|
struct ocfs2_local_disk_chunk *dchunk; |
|
struct ocfs2_local_disk_dqblk *dqblk; |
|
struct dquot *dquot; |
|
handle_t *handle; |
|
struct buffer_head *hbh = NULL, *qbh = NULL; |
|
int status = 0; |
|
int bit, chunk; |
|
struct ocfs2_recovery_chunk *rchunk, *next; |
|
qsize_t spacechange, inodechange; |
|
|
|
trace_ocfs2_recover_local_quota_file((unsigned long)lqinode->i_ino, type); |
|
|
|
list_for_each_entry_safe(rchunk, next, &(rec->r_list[type]), rc_list) { |
|
chunk = rchunk->rc_chunk; |
|
hbh = NULL; |
|
status = ocfs2_read_quota_block(lqinode, |
|
ol_quota_chunk_block(sb, chunk), |
|
&hbh); |
|
if (status) { |
|
mlog_errno(status); |
|
break; |
|
} |
|
dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data; |
|
for_each_set_bit(bit, rchunk->rc_bitmap, ol_chunk_entries(sb)) { |
|
qbh = NULL; |
|
status = ocfs2_read_quota_block(lqinode, |
|
ol_dqblk_block(sb, chunk, bit), |
|
&qbh); |
|
if (status) { |
|
mlog_errno(status); |
|
break; |
|
} |
|
dqblk = (struct ocfs2_local_disk_dqblk *)(qbh->b_data + |
|
ol_dqblk_block_off(sb, chunk, bit)); |
|
dquot = dqget(sb, |
|
make_kqid(&init_user_ns, type, |
|
le64_to_cpu(dqblk->dqb_id))); |
|
if (IS_ERR(dquot)) { |
|
status = PTR_ERR(dquot); |
|
mlog(ML_ERROR, "Failed to get quota structure " |
|
"for id %u, type %d. Cannot finish quota " |
|
"file recovery.\n", |
|
(unsigned)le64_to_cpu(dqblk->dqb_id), |
|
type); |
|
goto out_put_bh; |
|
} |
|
status = ocfs2_lock_global_qf(oinfo, 1); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out_put_dquot; |
|
} |
|
|
|
handle = ocfs2_start_trans(OCFS2_SB(sb), |
|
OCFS2_QSYNC_CREDITS); |
|
if (IS_ERR(handle)) { |
|
status = PTR_ERR(handle); |
|
mlog_errno(status); |
|
goto out_drop_lock; |
|
} |
|
down_write(&sb_dqopt(sb)->dqio_sem); |
|
spin_lock(&dquot->dq_dqb_lock); |
|
/* Add usage from quota entry into quota changes |
|
* of our node. Auxiliary variables are important |
|
* due to signedness */ |
|
spacechange = le64_to_cpu(dqblk->dqb_spacemod); |
|
inodechange = le64_to_cpu(dqblk->dqb_inodemod); |
|
dquot->dq_dqb.dqb_curspace += spacechange; |
|
dquot->dq_dqb.dqb_curinodes += inodechange; |
|
spin_unlock(&dquot->dq_dqb_lock); |
|
/* We want to drop reference held by the crashed |
|
* node. Since we have our own reference we know |
|
* global structure actually won't be freed. */ |
|
status = ocfs2_global_release_dquot(dquot); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out_commit; |
|
} |
|
/* Release local quota file entry */ |
|
status = ocfs2_journal_access_dq(handle, |
|
INODE_CACHE(lqinode), |
|
qbh, OCFS2_JOURNAL_ACCESS_WRITE); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out_commit; |
|
} |
|
lock_buffer(qbh); |
|
WARN_ON(!ocfs2_test_bit_unaligned(bit, dchunk->dqc_bitmap)); |
|
ocfs2_clear_bit_unaligned(bit, dchunk->dqc_bitmap); |
|
le32_add_cpu(&dchunk->dqc_free, 1); |
|
unlock_buffer(qbh); |
|
ocfs2_journal_dirty(handle, qbh); |
|
out_commit: |
|
up_write(&sb_dqopt(sb)->dqio_sem); |
|
ocfs2_commit_trans(OCFS2_SB(sb), handle); |
|
out_drop_lock: |
|
ocfs2_unlock_global_qf(oinfo, 1); |
|
out_put_dquot: |
|
dqput(dquot); |
|
out_put_bh: |
|
brelse(qbh); |
|
if (status < 0) |
|
break; |
|
} |
|
brelse(hbh); |
|
list_del(&rchunk->rc_list); |
|
kfree(rchunk->rc_bitmap); |
|
kfree(rchunk); |
|
if (status < 0) |
|
break; |
|
} |
|
if (status < 0) |
|
free_recovery_list(&(rec->r_list[type])); |
|
if (status) |
|
mlog_errno(status); |
|
return status; |
|
} |
|
|
|
/* Recover local quota files for given node different from us */ |
|
int ocfs2_finish_quota_recovery(struct ocfs2_super *osb, |
|
struct ocfs2_quota_recovery *rec, |
|
int slot_num) |
|
{ |
|
unsigned int ino[OCFS2_MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, |
|
LOCAL_GROUP_QUOTA_SYSTEM_INODE }; |
|
struct super_block *sb = osb->sb; |
|
struct ocfs2_local_disk_dqinfo *ldinfo; |
|
struct buffer_head *bh; |
|
handle_t *handle; |
|
int type; |
|
int status = 0; |
|
struct inode *lqinode; |
|
unsigned int flags; |
|
|
|
printk(KERN_NOTICE "ocfs2: Finishing quota recovery on device (%s) for " |
|
"slot %u\n", osb->dev_str, slot_num); |
|
|
|
down_read(&sb->s_umount); |
|
for (type = 0; type < OCFS2_MAXQUOTAS; type++) { |
|
if (list_empty(&(rec->r_list[type]))) |
|
continue; |
|
trace_ocfs2_finish_quota_recovery(slot_num); |
|
lqinode = ocfs2_get_system_file_inode(osb, ino[type], slot_num); |
|
if (!lqinode) { |
|
status = -ENOENT; |
|
goto out; |
|
} |
|
status = ocfs2_inode_lock_full(lqinode, NULL, 1, |
|
OCFS2_META_LOCK_NOQUEUE); |
|
/* Someone else is holding the lock? Then he must be |
|
* doing the recovery. Just skip the file... */ |
|
if (status == -EAGAIN) { |
|
printk(KERN_NOTICE "ocfs2: Skipping quota recovery on " |
|
"device (%s) for slot %d because quota file is " |
|
"locked.\n", osb->dev_str, slot_num); |
|
status = 0; |
|
goto out_put; |
|
} else if (status < 0) { |
|
mlog_errno(status); |
|
goto out_put; |
|
} |
|
/* Now read local header */ |
|
bh = NULL; |
|
status = ocfs2_read_quota_block(lqinode, 0, &bh); |
|
if (status) { |
|
mlog_errno(status); |
|
mlog(ML_ERROR, "failed to read quota file info header " |
|
"(slot=%d type=%d)\n", slot_num, type); |
|
goto out_lock; |
|
} |
|
ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + |
|
OCFS2_LOCAL_INFO_OFF); |
|
/* Is recovery still needed? */ |
|
flags = le32_to_cpu(ldinfo->dqi_flags); |
|
if (!(flags & OLQF_CLEAN)) |
|
status = ocfs2_recover_local_quota_file(lqinode, |
|
type, |
|
rec); |
|
/* We don't want to mark file as clean when it is actually |
|
* active */ |
|
if (slot_num == osb->slot_num) |
|
goto out_bh; |
|
/* Mark quota file as clean if we are recovering quota file of |
|
* some other node. */ |
|
handle = ocfs2_start_trans(osb, |
|
OCFS2_LOCAL_QINFO_WRITE_CREDITS); |
|
if (IS_ERR(handle)) { |
|
status = PTR_ERR(handle); |
|
mlog_errno(status); |
|
goto out_bh; |
|
} |
|
status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), |
|
bh, |
|
OCFS2_JOURNAL_ACCESS_WRITE); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out_trans; |
|
} |
|
lock_buffer(bh); |
|
ldinfo->dqi_flags = cpu_to_le32(flags | OLQF_CLEAN); |
|
unlock_buffer(bh); |
|
ocfs2_journal_dirty(handle, bh); |
|
out_trans: |
|
ocfs2_commit_trans(osb, handle); |
|
out_bh: |
|
brelse(bh); |
|
out_lock: |
|
ocfs2_inode_unlock(lqinode, 1); |
|
out_put: |
|
iput(lqinode); |
|
if (status < 0) |
|
break; |
|
} |
|
out: |
|
up_read(&sb->s_umount); |
|
kfree(rec); |
|
return status; |
|
} |
|
|
|
/* Read information header from quota file */ |
|
static int ocfs2_local_read_info(struct super_block *sb, int type) |
|
{ |
|
struct ocfs2_local_disk_dqinfo *ldinfo; |
|
struct mem_dqinfo *info = sb_dqinfo(sb, type); |
|
struct ocfs2_mem_dqinfo *oinfo; |
|
struct inode *lqinode = sb_dqopt(sb)->files[type]; |
|
int status; |
|
struct buffer_head *bh = NULL; |
|
struct ocfs2_quota_recovery *rec; |
|
int locked = 0; |
|
|
|
info->dqi_max_spc_limit = 0x7fffffffffffffffLL; |
|
info->dqi_max_ino_limit = 0x7fffffffffffffffLL; |
|
oinfo = kmalloc(sizeof(struct ocfs2_mem_dqinfo), GFP_NOFS); |
|
if (!oinfo) { |
|
mlog(ML_ERROR, "failed to allocate memory for ocfs2 quota" |
|
" info."); |
|
goto out_err; |
|
} |
|
info->dqi_priv = oinfo; |
|
oinfo->dqi_type = type; |
|
INIT_LIST_HEAD(&oinfo->dqi_chunk); |
|
oinfo->dqi_gqinode = NULL; |
|
ocfs2_qinfo_lock_res_init(&oinfo->dqi_gqlock, oinfo); |
|
oinfo->dqi_rec = NULL; |
|
oinfo->dqi_lqi_bh = NULL; |
|
oinfo->dqi_libh = NULL; |
|
|
|
status = ocfs2_global_read_info(sb, type); |
|
if (status < 0) |
|
goto out_err; |
|
|
|
status = ocfs2_inode_lock(lqinode, &oinfo->dqi_lqi_bh, 1); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out_err; |
|
} |
|
locked = 1; |
|
|
|
/* Now read local header */ |
|
status = ocfs2_read_quota_block(lqinode, 0, &bh); |
|
if (status) { |
|
mlog_errno(status); |
|
mlog(ML_ERROR, "failed to read quota file info header " |
|
"(type=%d)\n", type); |
|
goto out_err; |
|
} |
|
ldinfo = (struct ocfs2_local_disk_dqinfo *)(bh->b_data + |
|
OCFS2_LOCAL_INFO_OFF); |
|
oinfo->dqi_flags = le32_to_cpu(ldinfo->dqi_flags); |
|
oinfo->dqi_chunks = le32_to_cpu(ldinfo->dqi_chunks); |
|
oinfo->dqi_blocks = le32_to_cpu(ldinfo->dqi_blocks); |
|
oinfo->dqi_libh = bh; |
|
|
|
/* We crashed when using local quota file? */ |
|
if (!(oinfo->dqi_flags & OLQF_CLEAN)) { |
|
rec = OCFS2_SB(sb)->quota_rec; |
|
if (!rec) { |
|
rec = ocfs2_alloc_quota_recovery(); |
|
if (!rec) { |
|
status = -ENOMEM; |
|
mlog_errno(status); |
|
goto out_err; |
|
} |
|
OCFS2_SB(sb)->quota_rec = rec; |
|
} |
|
|
|
status = ocfs2_recovery_load_quota(lqinode, ldinfo, type, |
|
&rec->r_list[type]); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out_err; |
|
} |
|
} |
|
|
|
status = ocfs2_load_local_quota_bitmaps(lqinode, |
|
ldinfo, |
|
&oinfo->dqi_chunk); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out_err; |
|
} |
|
|
|
/* Now mark quota file as used */ |
|
oinfo->dqi_flags &= ~OLQF_CLEAN; |
|
status = ocfs2_modify_bh(lqinode, bh, olq_update_info, info); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out_err; |
|
} |
|
|
|
return 0; |
|
out_err: |
|
if (oinfo) { |
|
iput(oinfo->dqi_gqinode); |
|
ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); |
|
ocfs2_lock_res_free(&oinfo->dqi_gqlock); |
|
brelse(oinfo->dqi_lqi_bh); |
|
if (locked) |
|
ocfs2_inode_unlock(lqinode, 1); |
|
ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); |
|
kfree(oinfo); |
|
} |
|
brelse(bh); |
|
return -1; |
|
} |
|
|
|
/* Write local info to quota file */ |
|
static int ocfs2_local_write_info(struct super_block *sb, int type) |
|
{ |
|
struct mem_dqinfo *info = sb_dqinfo(sb, type); |
|
struct buffer_head *bh = ((struct ocfs2_mem_dqinfo *)info->dqi_priv) |
|
->dqi_libh; |
|
int status; |
|
|
|
status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], bh, olq_update_info, |
|
info); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
return -1; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* Release info from memory */ |
|
static int ocfs2_local_free_info(struct super_block *sb, int type) |
|
{ |
|
struct mem_dqinfo *info = sb_dqinfo(sb, type); |
|
struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; |
|
struct ocfs2_quota_chunk *chunk; |
|
struct ocfs2_local_disk_chunk *dchunk; |
|
int mark_clean = 1, len; |
|
int status; |
|
|
|
iput(oinfo->dqi_gqinode); |
|
ocfs2_simple_drop_lockres(OCFS2_SB(sb), &oinfo->dqi_gqlock); |
|
ocfs2_lock_res_free(&oinfo->dqi_gqlock); |
|
list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { |
|
dchunk = (struct ocfs2_local_disk_chunk *) |
|
(chunk->qc_headerbh->b_data); |
|
if (chunk->qc_num < oinfo->dqi_chunks - 1) { |
|
len = ol_chunk_entries(sb); |
|
} else { |
|
len = (oinfo->dqi_blocks - |
|
ol_quota_chunk_block(sb, chunk->qc_num) - 1) |
|
* ol_quota_entries_per_block(sb); |
|
} |
|
/* Not all entries free? Bug! */ |
|
if (le32_to_cpu(dchunk->dqc_free) != len) { |
|
mlog(ML_ERROR, "releasing quota file with used " |
|
"entries (type=%d)\n", type); |
|
mark_clean = 0; |
|
} |
|
} |
|
ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk); |
|
|
|
/* |
|
* s_umount held in exclusive mode protects us against racing with |
|
* recovery thread... |
|
*/ |
|
if (oinfo->dqi_rec) { |
|
ocfs2_free_quota_recovery(oinfo->dqi_rec); |
|
mark_clean = 0; |
|
} |
|
|
|
if (!mark_clean) |
|
goto out; |
|
|
|
/* Mark local file as clean */ |
|
oinfo->dqi_flags |= OLQF_CLEAN; |
|
status = ocfs2_modify_bh(sb_dqopt(sb)->files[type], |
|
oinfo->dqi_libh, |
|
olq_update_info, |
|
info); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out; |
|
} |
|
|
|
out: |
|
ocfs2_inode_unlock(sb_dqopt(sb)->files[type], 1); |
|
brelse(oinfo->dqi_libh); |
|
brelse(oinfo->dqi_lqi_bh); |
|
kfree(oinfo); |
|
return 0; |
|
} |
|
|
|
static void olq_set_dquot(struct buffer_head *bh, void *private) |
|
{ |
|
struct ocfs2_dquot *od = private; |
|
struct ocfs2_local_disk_dqblk *dqblk; |
|
struct super_block *sb = od->dq_dquot.dq_sb; |
|
|
|
dqblk = (struct ocfs2_local_disk_dqblk *)(bh->b_data |
|
+ ol_dqblk_block_offset(sb, od->dq_local_off)); |
|
|
|
dqblk->dqb_id = cpu_to_le64(from_kqid(&init_user_ns, |
|
od->dq_dquot.dq_id)); |
|
spin_lock(&od->dq_dquot.dq_dqb_lock); |
|
dqblk->dqb_spacemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curspace - |
|
od->dq_origspace); |
|
dqblk->dqb_inodemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curinodes - |
|
od->dq_originodes); |
|
spin_unlock(&od->dq_dquot.dq_dqb_lock); |
|
trace_olq_set_dquot( |
|
(unsigned long long)le64_to_cpu(dqblk->dqb_spacemod), |
|
(unsigned long long)le64_to_cpu(dqblk->dqb_inodemod), |
|
from_kqid(&init_user_ns, od->dq_dquot.dq_id)); |
|
} |
|
|
|
/* Write dquot to local quota file */ |
|
int ocfs2_local_write_dquot(struct dquot *dquot) |
|
{ |
|
struct super_block *sb = dquot->dq_sb; |
|
struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); |
|
struct buffer_head *bh; |
|
struct inode *lqinode = sb_dqopt(sb)->files[dquot->dq_id.type]; |
|
int status; |
|
|
|
status = ocfs2_read_quota_phys_block(lqinode, od->dq_local_phys_blk, |
|
&bh); |
|
if (status) { |
|
mlog_errno(status); |
|
goto out; |
|
} |
|
status = ocfs2_modify_bh(lqinode, bh, olq_set_dquot, od); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out; |
|
} |
|
out: |
|
brelse(bh); |
|
return status; |
|
} |
|
|
|
/* Find free entry in local quota file */ |
|
static struct ocfs2_quota_chunk *ocfs2_find_free_entry(struct super_block *sb, |
|
int type, |
|
int *offset) |
|
{ |
|
struct mem_dqinfo *info = sb_dqinfo(sb, type); |
|
struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; |
|
struct ocfs2_quota_chunk *chunk; |
|
struct ocfs2_local_disk_chunk *dchunk; |
|
int found = 0, len; |
|
|
|
list_for_each_entry(chunk, &oinfo->dqi_chunk, qc_chunk) { |
|
dchunk = (struct ocfs2_local_disk_chunk *) |
|
chunk->qc_headerbh->b_data; |
|
if (le32_to_cpu(dchunk->dqc_free) > 0) { |
|
found = 1; |
|
break; |
|
} |
|
} |
|
if (!found) |
|
return NULL; |
|
|
|
if (chunk->qc_num < oinfo->dqi_chunks - 1) { |
|
len = ol_chunk_entries(sb); |
|
} else { |
|
len = (oinfo->dqi_blocks - |
|
ol_quota_chunk_block(sb, chunk->qc_num) - 1) |
|
* ol_quota_entries_per_block(sb); |
|
} |
|
|
|
found = ocfs2_find_next_zero_bit_unaligned(dchunk->dqc_bitmap, len, 0); |
|
/* We failed? */ |
|
if (found == len) { |
|
mlog(ML_ERROR, "Did not find empty entry in chunk %d with %u" |
|
" entries free (type=%d)\n", chunk->qc_num, |
|
le32_to_cpu(dchunk->dqc_free), type); |
|
return ERR_PTR(-EIO); |
|
} |
|
*offset = found; |
|
return chunk; |
|
} |
|
|
|
/* Add new chunk to the local quota file */ |
|
static struct ocfs2_quota_chunk *ocfs2_local_quota_add_chunk( |
|
struct super_block *sb, |
|
int type, |
|
int *offset) |
|
{ |
|
struct mem_dqinfo *info = sb_dqinfo(sb, type); |
|
struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; |
|
struct inode *lqinode = sb_dqopt(sb)->files[type]; |
|
struct ocfs2_quota_chunk *chunk = NULL; |
|
struct ocfs2_local_disk_chunk *dchunk; |
|
int status; |
|
handle_t *handle; |
|
struct buffer_head *bh = NULL, *dbh = NULL; |
|
u64 p_blkno; |
|
|
|
/* We are protected by dqio_sem so no locking needed */ |
|
status = ocfs2_extend_no_holes(lqinode, NULL, |
|
i_size_read(lqinode) + 2 * sb->s_blocksize, |
|
i_size_read(lqinode)); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out; |
|
} |
|
status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, |
|
i_size_read(lqinode) + 2 * sb->s_blocksize); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out; |
|
} |
|
|
|
chunk = kmem_cache_alloc(ocfs2_qf_chunk_cachep, GFP_NOFS); |
|
if (!chunk) { |
|
status = -ENOMEM; |
|
mlog_errno(status); |
|
goto out; |
|
} |
|
/* Local quota info and two new blocks we initialize */ |
|
handle = ocfs2_start_trans(OCFS2_SB(sb), |
|
OCFS2_LOCAL_QINFO_WRITE_CREDITS + |
|
2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); |
|
if (IS_ERR(handle)) { |
|
status = PTR_ERR(handle); |
|
mlog_errno(status); |
|
goto out; |
|
} |
|
|
|
/* Initialize chunk header */ |
|
status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks, |
|
&p_blkno, NULL, NULL); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out_trans; |
|
} |
|
bh = sb_getblk(sb, p_blkno); |
|
if (!bh) { |
|
status = -ENOMEM; |
|
mlog_errno(status); |
|
goto out_trans; |
|
} |
|
dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; |
|
ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), bh); |
|
status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), bh, |
|
OCFS2_JOURNAL_ACCESS_CREATE); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out_trans; |
|
} |
|
lock_buffer(bh); |
|
dchunk->dqc_free = cpu_to_le32(ol_quota_entries_per_block(sb)); |
|
memset(dchunk->dqc_bitmap, 0, |
|
sb->s_blocksize - sizeof(struct ocfs2_local_disk_chunk) - |
|
OCFS2_QBLK_RESERVED_SPACE); |
|
unlock_buffer(bh); |
|
ocfs2_journal_dirty(handle, bh); |
|
|
|
/* Initialize new block with structures */ |
|
status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks + 1, |
|
&p_blkno, NULL, NULL); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out_trans; |
|
} |
|
dbh = sb_getblk(sb, p_blkno); |
|
if (!dbh) { |
|
status = -ENOMEM; |
|
mlog_errno(status); |
|
goto out_trans; |
|
} |
|
ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), dbh); |
|
status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), dbh, |
|
OCFS2_JOURNAL_ACCESS_CREATE); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out_trans; |
|
} |
|
lock_buffer(dbh); |
|
memset(dbh->b_data, 0, sb->s_blocksize - OCFS2_QBLK_RESERVED_SPACE); |
|
unlock_buffer(dbh); |
|
ocfs2_journal_dirty(handle, dbh); |
|
|
|
/* Update local quotafile info */ |
|
oinfo->dqi_blocks += 2; |
|
oinfo->dqi_chunks++; |
|
status = ocfs2_local_write_info(sb, type); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out_trans; |
|
} |
|
status = ocfs2_commit_trans(OCFS2_SB(sb), handle); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out; |
|
} |
|
|
|
list_add_tail(&chunk->qc_chunk, &oinfo->dqi_chunk); |
|
chunk->qc_num = list_entry(chunk->qc_chunk.prev, |
|
struct ocfs2_quota_chunk, |
|
qc_chunk)->qc_num + 1; |
|
chunk->qc_headerbh = bh; |
|
*offset = 0; |
|
return chunk; |
|
out_trans: |
|
ocfs2_commit_trans(OCFS2_SB(sb), handle); |
|
out: |
|
brelse(bh); |
|
brelse(dbh); |
|
kmem_cache_free(ocfs2_qf_chunk_cachep, chunk); |
|
return ERR_PTR(status); |
|
} |
|
|
|
/* Find free entry in local quota file */ |
|
static struct ocfs2_quota_chunk *ocfs2_extend_local_quota_file( |
|
struct super_block *sb, |
|
int type, |
|
int *offset) |
|
{ |
|
struct mem_dqinfo *info = sb_dqinfo(sb, type); |
|
struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv; |
|
struct ocfs2_quota_chunk *chunk; |
|
struct inode *lqinode = sb_dqopt(sb)->files[type]; |
|
struct ocfs2_local_disk_chunk *dchunk; |
|
int epb = ol_quota_entries_per_block(sb); |
|
unsigned int chunk_blocks; |
|
struct buffer_head *bh; |
|
u64 p_blkno; |
|
int status; |
|
handle_t *handle; |
|
|
|
if (list_empty(&oinfo->dqi_chunk)) |
|
return ocfs2_local_quota_add_chunk(sb, type, offset); |
|
/* Is the last chunk full? */ |
|
chunk = list_entry(oinfo->dqi_chunk.prev, |
|
struct ocfs2_quota_chunk, qc_chunk); |
|
chunk_blocks = oinfo->dqi_blocks - |
|
ol_quota_chunk_block(sb, chunk->qc_num) - 1; |
|
if (ol_chunk_blocks(sb) == chunk_blocks) |
|
return ocfs2_local_quota_add_chunk(sb, type, offset); |
|
|
|
/* We are protected by dqio_sem so no locking needed */ |
|
status = ocfs2_extend_no_holes(lqinode, NULL, |
|
i_size_read(lqinode) + sb->s_blocksize, |
|
i_size_read(lqinode)); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out; |
|
} |
|
status = ocfs2_simple_size_update(lqinode, oinfo->dqi_lqi_bh, |
|
i_size_read(lqinode) + sb->s_blocksize); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out; |
|
} |
|
|
|
/* Get buffer from the just added block */ |
|
status = ocfs2_extent_map_get_blocks(lqinode, oinfo->dqi_blocks, |
|
&p_blkno, NULL, NULL); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out; |
|
} |
|
bh = sb_getblk(sb, p_blkno); |
|
if (!bh) { |
|
status = -ENOMEM; |
|
mlog_errno(status); |
|
goto out; |
|
} |
|
ocfs2_set_new_buffer_uptodate(INODE_CACHE(lqinode), bh); |
|
|
|
/* Local quota info, chunk header and the new block we initialize */ |
|
handle = ocfs2_start_trans(OCFS2_SB(sb), |
|
OCFS2_LOCAL_QINFO_WRITE_CREDITS + |
|
2 * OCFS2_QUOTA_BLOCK_UPDATE_CREDITS); |
|
if (IS_ERR(handle)) { |
|
status = PTR_ERR(handle); |
|
mlog_errno(status); |
|
goto out; |
|
} |
|
/* Zero created block */ |
|
status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), bh, |
|
OCFS2_JOURNAL_ACCESS_CREATE); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out_trans; |
|
} |
|
lock_buffer(bh); |
|
memset(bh->b_data, 0, sb->s_blocksize); |
|
unlock_buffer(bh); |
|
ocfs2_journal_dirty(handle, bh); |
|
|
|
/* Update chunk header */ |
|
status = ocfs2_journal_access_dq(handle, INODE_CACHE(lqinode), |
|
chunk->qc_headerbh, |
|
OCFS2_JOURNAL_ACCESS_WRITE); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out_trans; |
|
} |
|
|
|
dchunk = (struct ocfs2_local_disk_chunk *)chunk->qc_headerbh->b_data; |
|
lock_buffer(chunk->qc_headerbh); |
|
le32_add_cpu(&dchunk->dqc_free, ol_quota_entries_per_block(sb)); |
|
unlock_buffer(chunk->qc_headerbh); |
|
ocfs2_journal_dirty(handle, chunk->qc_headerbh); |
|
|
|
/* Update file header */ |
|
oinfo->dqi_blocks++; |
|
status = ocfs2_local_write_info(sb, type); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out_trans; |
|
} |
|
|
|
status = ocfs2_commit_trans(OCFS2_SB(sb), handle); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out; |
|
} |
|
*offset = chunk_blocks * epb; |
|
return chunk; |
|
out_trans: |
|
ocfs2_commit_trans(OCFS2_SB(sb), handle); |
|
out: |
|
return ERR_PTR(status); |
|
} |
|
|
|
static void olq_alloc_dquot(struct buffer_head *bh, void *private) |
|
{ |
|
int *offset = private; |
|
struct ocfs2_local_disk_chunk *dchunk; |
|
|
|
dchunk = (struct ocfs2_local_disk_chunk *)bh->b_data; |
|
ocfs2_set_bit_unaligned(*offset, dchunk->dqc_bitmap); |
|
le32_add_cpu(&dchunk->dqc_free, -1); |
|
} |
|
|
|
/* Create dquot in the local file for given id */ |
|
int ocfs2_create_local_dquot(struct dquot *dquot) |
|
{ |
|
struct super_block *sb = dquot->dq_sb; |
|
int type = dquot->dq_id.type; |
|
struct inode *lqinode = sb_dqopt(sb)->files[type]; |
|
struct ocfs2_quota_chunk *chunk; |
|
struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); |
|
int offset; |
|
int status; |
|
u64 pcount; |
|
|
|
down_write(&OCFS2_I(lqinode)->ip_alloc_sem); |
|
chunk = ocfs2_find_free_entry(sb, type, &offset); |
|
if (!chunk) { |
|
chunk = ocfs2_extend_local_quota_file(sb, type, &offset); |
|
if (IS_ERR(chunk)) { |
|
status = PTR_ERR(chunk); |
|
goto out; |
|
} |
|
} else if (IS_ERR(chunk)) { |
|
status = PTR_ERR(chunk); |
|
goto out; |
|
} |
|
od->dq_local_off = ol_dqblk_off(sb, chunk->qc_num, offset); |
|
od->dq_chunk = chunk; |
|
status = ocfs2_extent_map_get_blocks(lqinode, |
|
ol_dqblk_block(sb, chunk->qc_num, offset), |
|
&od->dq_local_phys_blk, |
|
&pcount, |
|
NULL); |
|
|
|
/* Initialize dquot structure on disk */ |
|
status = ocfs2_local_write_dquot(dquot); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out; |
|
} |
|
|
|
/* Mark structure as allocated */ |
|
status = ocfs2_modify_bh(lqinode, chunk->qc_headerbh, olq_alloc_dquot, |
|
&offset); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out; |
|
} |
|
out: |
|
up_write(&OCFS2_I(lqinode)->ip_alloc_sem); |
|
return status; |
|
} |
|
|
|
/* |
|
* Release dquot structure from local quota file. ocfs2_release_dquot() has |
|
* already started a transaction and written all changes to global quota file |
|
*/ |
|
int ocfs2_local_release_dquot(handle_t *handle, struct dquot *dquot) |
|
{ |
|
int status; |
|
int type = dquot->dq_id.type; |
|
struct ocfs2_dquot *od = OCFS2_DQUOT(dquot); |
|
struct super_block *sb = dquot->dq_sb; |
|
struct ocfs2_local_disk_chunk *dchunk; |
|
int offset; |
|
|
|
status = ocfs2_journal_access_dq(handle, |
|
INODE_CACHE(sb_dqopt(sb)->files[type]), |
|
od->dq_chunk->qc_headerbh, OCFS2_JOURNAL_ACCESS_WRITE); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto out; |
|
} |
|
offset = ol_dqblk_chunk_off(sb, od->dq_chunk->qc_num, |
|
od->dq_local_off); |
|
dchunk = (struct ocfs2_local_disk_chunk *) |
|
(od->dq_chunk->qc_headerbh->b_data); |
|
/* Mark structure as freed */ |
|
lock_buffer(od->dq_chunk->qc_headerbh); |
|
ocfs2_clear_bit_unaligned(offset, dchunk->dqc_bitmap); |
|
le32_add_cpu(&dchunk->dqc_free, 1); |
|
unlock_buffer(od->dq_chunk->qc_headerbh); |
|
ocfs2_journal_dirty(handle, od->dq_chunk->qc_headerbh); |
|
|
|
out: |
|
return status; |
|
} |
|
|
|
static const struct quota_format_ops ocfs2_format_ops = { |
|
.check_quota_file = ocfs2_local_check_quota_file, |
|
.read_file_info = ocfs2_local_read_info, |
|
.write_file_info = ocfs2_global_write_info, |
|
.free_file_info = ocfs2_local_free_info, |
|
}; |
|
|
|
struct quota_format_type ocfs2_quota_format = { |
|
.qf_fmt_id = QFMT_OCFS2, |
|
.qf_ops = &ocfs2_format_ops, |
|
.qf_owner = THIS_MODULE |
|
};
|
|
|