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701 lines
18 KiB
701 lines
18 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* Copyright (C) 2016 Oracle. All Rights Reserved. |
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* Author: Darrick J. Wong <[email protected]> |
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*/ |
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#include "xfs.h" |
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#include "xfs_fs.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_bit.h" |
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#include "xfs_shared.h" |
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#include "xfs_mount.h" |
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#include "xfs_defer.h" |
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#include "xfs_inode.h" |
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#include "xfs_trans.h" |
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#include "xfs_trans_priv.h" |
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#include "xfs_bmap_item.h" |
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#include "xfs_log.h" |
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#include "xfs_bmap.h" |
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#include "xfs_icache.h" |
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#include "xfs_bmap_btree.h" |
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#include "xfs_trans_space.h" |
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#include "xfs_error.h" |
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#include "xfs_log_priv.h" |
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#include "xfs_log_recover.h" |
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#include "xfs_quota.h" |
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|
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kmem_zone_t *xfs_bui_zone; |
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kmem_zone_t *xfs_bud_zone; |
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|
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static const struct xfs_item_ops xfs_bui_item_ops; |
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|
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static inline struct xfs_bui_log_item *BUI_ITEM(struct xfs_log_item *lip) |
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{ |
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return container_of(lip, struct xfs_bui_log_item, bui_item); |
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} |
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STATIC void |
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xfs_bui_item_free( |
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struct xfs_bui_log_item *buip) |
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{ |
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kmem_cache_free(xfs_bui_zone, buip); |
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} |
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|
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/* |
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* Freeing the BUI requires that we remove it from the AIL if it has already |
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* been placed there. However, the BUI may not yet have been placed in the AIL |
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* when called by xfs_bui_release() from BUD processing due to the ordering of |
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* committed vs unpin operations in bulk insert operations. Hence the reference |
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* count to ensure only the last caller frees the BUI. |
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*/ |
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STATIC void |
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xfs_bui_release( |
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struct xfs_bui_log_item *buip) |
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{ |
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ASSERT(atomic_read(&buip->bui_refcount) > 0); |
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if (atomic_dec_and_test(&buip->bui_refcount)) { |
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xfs_trans_ail_delete(&buip->bui_item, SHUTDOWN_LOG_IO_ERROR); |
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xfs_bui_item_free(buip); |
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} |
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} |
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STATIC void |
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xfs_bui_item_size( |
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struct xfs_log_item *lip, |
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int *nvecs, |
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int *nbytes) |
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{ |
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struct xfs_bui_log_item *buip = BUI_ITEM(lip); |
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*nvecs += 1; |
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*nbytes += xfs_bui_log_format_sizeof(buip->bui_format.bui_nextents); |
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} |
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|
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/* |
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* This is called to fill in the vector of log iovecs for the |
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* given bui log item. We use only 1 iovec, and we point that |
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* at the bui_log_format structure embedded in the bui item. |
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* It is at this point that we assert that all of the extent |
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* slots in the bui item have been filled. |
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*/ |
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STATIC void |
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xfs_bui_item_format( |
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struct xfs_log_item *lip, |
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struct xfs_log_vec *lv) |
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{ |
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struct xfs_bui_log_item *buip = BUI_ITEM(lip); |
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struct xfs_log_iovec *vecp = NULL; |
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ASSERT(atomic_read(&buip->bui_next_extent) == |
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buip->bui_format.bui_nextents); |
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buip->bui_format.bui_type = XFS_LI_BUI; |
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buip->bui_format.bui_size = 1; |
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xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_BUI_FORMAT, &buip->bui_format, |
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xfs_bui_log_format_sizeof(buip->bui_format.bui_nextents)); |
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} |
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|
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/* |
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* The unpin operation is the last place an BUI is manipulated in the log. It is |
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* either inserted in the AIL or aborted in the event of a log I/O error. In |
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* either case, the BUI transaction has been successfully committed to make it |
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* this far. Therefore, we expect whoever committed the BUI to either construct |
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* and commit the BUD or drop the BUD's reference in the event of error. Simply |
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* drop the log's BUI reference now that the log is done with it. |
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*/ |
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STATIC void |
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xfs_bui_item_unpin( |
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struct xfs_log_item *lip, |
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int remove) |
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{ |
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struct xfs_bui_log_item *buip = BUI_ITEM(lip); |
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xfs_bui_release(buip); |
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} |
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/* |
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* The BUI has been either committed or aborted if the transaction has been |
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* cancelled. If the transaction was cancelled, an BUD isn't going to be |
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* constructed and thus we free the BUI here directly. |
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*/ |
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STATIC void |
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xfs_bui_item_release( |
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struct xfs_log_item *lip) |
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{ |
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xfs_bui_release(BUI_ITEM(lip)); |
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} |
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/* |
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* Allocate and initialize an bui item with the given number of extents. |
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*/ |
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STATIC struct xfs_bui_log_item * |
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xfs_bui_init( |
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struct xfs_mount *mp) |
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|
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{ |
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struct xfs_bui_log_item *buip; |
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buip = kmem_cache_zalloc(xfs_bui_zone, GFP_KERNEL | __GFP_NOFAIL); |
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xfs_log_item_init(mp, &buip->bui_item, XFS_LI_BUI, &xfs_bui_item_ops); |
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buip->bui_format.bui_nextents = XFS_BUI_MAX_FAST_EXTENTS; |
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buip->bui_format.bui_id = (uintptr_t)(void *)buip; |
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atomic_set(&buip->bui_next_extent, 0); |
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atomic_set(&buip->bui_refcount, 2); |
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return buip; |
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} |
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static inline struct xfs_bud_log_item *BUD_ITEM(struct xfs_log_item *lip) |
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{ |
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return container_of(lip, struct xfs_bud_log_item, bud_item); |
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} |
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STATIC void |
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xfs_bud_item_size( |
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struct xfs_log_item *lip, |
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int *nvecs, |
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int *nbytes) |
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{ |
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*nvecs += 1; |
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*nbytes += sizeof(struct xfs_bud_log_format); |
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} |
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/* |
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* This is called to fill in the vector of log iovecs for the |
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* given bud log item. We use only 1 iovec, and we point that |
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* at the bud_log_format structure embedded in the bud item. |
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* It is at this point that we assert that all of the extent |
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* slots in the bud item have been filled. |
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*/ |
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STATIC void |
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xfs_bud_item_format( |
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struct xfs_log_item *lip, |
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struct xfs_log_vec *lv) |
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{ |
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struct xfs_bud_log_item *budp = BUD_ITEM(lip); |
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struct xfs_log_iovec *vecp = NULL; |
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budp->bud_format.bud_type = XFS_LI_BUD; |
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budp->bud_format.bud_size = 1; |
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xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_BUD_FORMAT, &budp->bud_format, |
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sizeof(struct xfs_bud_log_format)); |
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} |
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/* |
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* The BUD is either committed or aborted if the transaction is cancelled. If |
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* the transaction is cancelled, drop our reference to the BUI and free the |
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* BUD. |
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*/ |
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STATIC void |
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xfs_bud_item_release( |
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struct xfs_log_item *lip) |
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{ |
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struct xfs_bud_log_item *budp = BUD_ITEM(lip); |
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xfs_bui_release(budp->bud_buip); |
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kmem_cache_free(xfs_bud_zone, budp); |
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} |
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static const struct xfs_item_ops xfs_bud_item_ops = { |
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.flags = XFS_ITEM_RELEASE_WHEN_COMMITTED, |
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.iop_size = xfs_bud_item_size, |
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.iop_format = xfs_bud_item_format, |
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.iop_release = xfs_bud_item_release, |
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}; |
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static struct xfs_bud_log_item * |
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xfs_trans_get_bud( |
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struct xfs_trans *tp, |
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struct xfs_bui_log_item *buip) |
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{ |
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struct xfs_bud_log_item *budp; |
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budp = kmem_cache_zalloc(xfs_bud_zone, GFP_KERNEL | __GFP_NOFAIL); |
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xfs_log_item_init(tp->t_mountp, &budp->bud_item, XFS_LI_BUD, |
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&xfs_bud_item_ops); |
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budp->bud_buip = buip; |
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budp->bud_format.bud_bui_id = buip->bui_format.bui_id; |
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xfs_trans_add_item(tp, &budp->bud_item); |
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return budp; |
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} |
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/* |
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* Finish an bmap update and log it to the BUD. Note that the |
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* transaction is marked dirty regardless of whether the bmap update |
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* succeeds or fails to support the BUI/BUD lifecycle rules. |
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*/ |
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static int |
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xfs_trans_log_finish_bmap_update( |
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struct xfs_trans *tp, |
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struct xfs_bud_log_item *budp, |
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enum xfs_bmap_intent_type type, |
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struct xfs_inode *ip, |
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int whichfork, |
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xfs_fileoff_t startoff, |
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xfs_fsblock_t startblock, |
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xfs_filblks_t *blockcount, |
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xfs_exntst_t state) |
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{ |
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int error; |
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error = xfs_bmap_finish_one(tp, ip, type, whichfork, startoff, |
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startblock, blockcount, state); |
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/* |
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* Mark the transaction dirty, even on error. This ensures the |
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* transaction is aborted, which: |
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* |
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* 1.) releases the BUI and frees the BUD |
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* 2.) shuts down the filesystem |
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*/ |
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tp->t_flags |= XFS_TRANS_DIRTY; |
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set_bit(XFS_LI_DIRTY, &budp->bud_item.li_flags); |
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return error; |
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} |
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|
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/* Sort bmap intents by inode. */ |
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static int |
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xfs_bmap_update_diff_items( |
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void *priv, |
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const struct list_head *a, |
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const struct list_head *b) |
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{ |
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struct xfs_bmap_intent *ba; |
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struct xfs_bmap_intent *bb; |
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ba = container_of(a, struct xfs_bmap_intent, bi_list); |
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bb = container_of(b, struct xfs_bmap_intent, bi_list); |
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return ba->bi_owner->i_ino - bb->bi_owner->i_ino; |
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} |
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/* Set the map extent flags for this mapping. */ |
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static void |
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xfs_trans_set_bmap_flags( |
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struct xfs_map_extent *bmap, |
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enum xfs_bmap_intent_type type, |
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int whichfork, |
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xfs_exntst_t state) |
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{ |
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bmap->me_flags = 0; |
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switch (type) { |
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case XFS_BMAP_MAP: |
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case XFS_BMAP_UNMAP: |
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bmap->me_flags = type; |
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break; |
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default: |
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ASSERT(0); |
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} |
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if (state == XFS_EXT_UNWRITTEN) |
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bmap->me_flags |= XFS_BMAP_EXTENT_UNWRITTEN; |
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if (whichfork == XFS_ATTR_FORK) |
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bmap->me_flags |= XFS_BMAP_EXTENT_ATTR_FORK; |
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} |
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/* Log bmap updates in the intent item. */ |
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STATIC void |
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xfs_bmap_update_log_item( |
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struct xfs_trans *tp, |
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struct xfs_bui_log_item *buip, |
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struct xfs_bmap_intent *bmap) |
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{ |
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uint next_extent; |
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struct xfs_map_extent *map; |
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tp->t_flags |= XFS_TRANS_DIRTY; |
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set_bit(XFS_LI_DIRTY, &buip->bui_item.li_flags); |
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/* |
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* atomic_inc_return gives us the value after the increment; |
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* we want to use it as an array index so we need to subtract 1 from |
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* it. |
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*/ |
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next_extent = atomic_inc_return(&buip->bui_next_extent) - 1; |
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ASSERT(next_extent < buip->bui_format.bui_nextents); |
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map = &buip->bui_format.bui_extents[next_extent]; |
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map->me_owner = bmap->bi_owner->i_ino; |
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map->me_startblock = bmap->bi_bmap.br_startblock; |
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map->me_startoff = bmap->bi_bmap.br_startoff; |
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map->me_len = bmap->bi_bmap.br_blockcount; |
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xfs_trans_set_bmap_flags(map, bmap->bi_type, bmap->bi_whichfork, |
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bmap->bi_bmap.br_state); |
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} |
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static struct xfs_log_item * |
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xfs_bmap_update_create_intent( |
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struct xfs_trans *tp, |
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struct list_head *items, |
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unsigned int count, |
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bool sort) |
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{ |
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struct xfs_mount *mp = tp->t_mountp; |
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struct xfs_bui_log_item *buip = xfs_bui_init(mp); |
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struct xfs_bmap_intent *bmap; |
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ASSERT(count == XFS_BUI_MAX_FAST_EXTENTS); |
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xfs_trans_add_item(tp, &buip->bui_item); |
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if (sort) |
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list_sort(mp, items, xfs_bmap_update_diff_items); |
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list_for_each_entry(bmap, items, bi_list) |
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xfs_bmap_update_log_item(tp, buip, bmap); |
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return &buip->bui_item; |
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} |
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/* Get an BUD so we can process all the deferred rmap updates. */ |
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static struct xfs_log_item * |
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xfs_bmap_update_create_done( |
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struct xfs_trans *tp, |
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struct xfs_log_item *intent, |
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unsigned int count) |
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{ |
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return &xfs_trans_get_bud(tp, BUI_ITEM(intent))->bud_item; |
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} |
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|
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/* Process a deferred rmap update. */ |
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STATIC int |
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xfs_bmap_update_finish_item( |
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struct xfs_trans *tp, |
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struct xfs_log_item *done, |
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struct list_head *item, |
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struct xfs_btree_cur **state) |
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{ |
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struct xfs_bmap_intent *bmap; |
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xfs_filblks_t count; |
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int error; |
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|
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bmap = container_of(item, struct xfs_bmap_intent, bi_list); |
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count = bmap->bi_bmap.br_blockcount; |
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error = xfs_trans_log_finish_bmap_update(tp, BUD_ITEM(done), |
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bmap->bi_type, |
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bmap->bi_owner, bmap->bi_whichfork, |
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bmap->bi_bmap.br_startoff, |
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bmap->bi_bmap.br_startblock, |
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&count, |
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bmap->bi_bmap.br_state); |
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if (!error && count > 0) { |
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ASSERT(bmap->bi_type == XFS_BMAP_UNMAP); |
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bmap->bi_bmap.br_blockcount = count; |
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return -EAGAIN; |
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} |
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kmem_free(bmap); |
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return error; |
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} |
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/* Abort all pending BUIs. */ |
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STATIC void |
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xfs_bmap_update_abort_intent( |
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struct xfs_log_item *intent) |
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{ |
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xfs_bui_release(BUI_ITEM(intent)); |
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} |
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/* Cancel a deferred rmap update. */ |
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STATIC void |
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xfs_bmap_update_cancel_item( |
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struct list_head *item) |
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{ |
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struct xfs_bmap_intent *bmap; |
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bmap = container_of(item, struct xfs_bmap_intent, bi_list); |
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kmem_free(bmap); |
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} |
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const struct xfs_defer_op_type xfs_bmap_update_defer_type = { |
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.max_items = XFS_BUI_MAX_FAST_EXTENTS, |
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.create_intent = xfs_bmap_update_create_intent, |
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.abort_intent = xfs_bmap_update_abort_intent, |
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.create_done = xfs_bmap_update_create_done, |
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.finish_item = xfs_bmap_update_finish_item, |
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.cancel_item = xfs_bmap_update_cancel_item, |
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}; |
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|
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/* Is this recovered BUI ok? */ |
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static inline bool |
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xfs_bui_validate( |
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struct xfs_mount *mp, |
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struct xfs_bui_log_item *buip) |
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{ |
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struct xfs_map_extent *bmap; |
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|
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/* Only one mapping operation per BUI... */ |
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if (buip->bui_format.bui_nextents != XFS_BUI_MAX_FAST_EXTENTS) |
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return false; |
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bmap = &buip->bui_format.bui_extents[0]; |
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|
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if (bmap->me_flags & ~XFS_BMAP_EXTENT_FLAGS) |
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return false; |
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|
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switch (bmap->me_flags & XFS_BMAP_EXTENT_TYPE_MASK) { |
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case XFS_BMAP_MAP: |
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case XFS_BMAP_UNMAP: |
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break; |
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default: |
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return false; |
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} |
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if (!xfs_verify_ino(mp, bmap->me_owner)) |
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return false; |
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|
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if (!xfs_verify_fileext(mp, bmap->me_startoff, bmap->me_len)) |
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return false; |
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|
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return xfs_verify_fsbext(mp, bmap->me_startblock, bmap->me_len); |
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} |
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|
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/* |
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* Process a bmap update intent item that was recovered from the log. |
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* We need to update some inode's bmbt. |
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*/ |
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STATIC int |
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xfs_bui_item_recover( |
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struct xfs_log_item *lip, |
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struct list_head *capture_list) |
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{ |
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struct xfs_bmbt_irec irec; |
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struct xfs_bui_log_item *buip = BUI_ITEM(lip); |
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struct xfs_trans *tp; |
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struct xfs_inode *ip = NULL; |
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struct xfs_mount *mp = lip->li_mountp; |
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struct xfs_map_extent *bmap; |
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struct xfs_bud_log_item *budp; |
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xfs_filblks_t count; |
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xfs_exntst_t state; |
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unsigned int bui_type; |
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int whichfork; |
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int iext_delta; |
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int error = 0; |
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|
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if (!xfs_bui_validate(mp, buip)) { |
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XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, |
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&buip->bui_format, sizeof(buip->bui_format)); |
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return -EFSCORRUPTED; |
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} |
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|
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bmap = &buip->bui_format.bui_extents[0]; |
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state = (bmap->me_flags & XFS_BMAP_EXTENT_UNWRITTEN) ? |
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XFS_EXT_UNWRITTEN : XFS_EXT_NORM; |
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whichfork = (bmap->me_flags & XFS_BMAP_EXTENT_ATTR_FORK) ? |
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XFS_ATTR_FORK : XFS_DATA_FORK; |
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bui_type = bmap->me_flags & XFS_BMAP_EXTENT_TYPE_MASK; |
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|
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/* Grab the inode. */ |
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error = xfs_iget(mp, NULL, bmap->me_owner, 0, 0, &ip); |
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if (error) |
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return error; |
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|
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error = xfs_qm_dqattach(ip); |
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if (error) |
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goto err_rele; |
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|
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if (VFS_I(ip)->i_nlink == 0) |
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xfs_iflags_set(ip, XFS_IRECOVERY); |
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|
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/* Allocate transaction and do the work. */ |
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error = xfs_trans_alloc(mp, &M_RES(mp)->tr_itruncate, |
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XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK), 0, 0, &tp); |
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if (error) |
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goto err_rele; |
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|
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budp = xfs_trans_get_bud(tp, buip); |
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xfs_ilock(ip, XFS_ILOCK_EXCL); |
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xfs_trans_ijoin(tp, ip, 0); |
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|
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if (bui_type == XFS_BMAP_MAP) |
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iext_delta = XFS_IEXT_ADD_NOSPLIT_CNT; |
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else |
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iext_delta = XFS_IEXT_PUNCH_HOLE_CNT; |
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|
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error = xfs_iext_count_may_overflow(ip, whichfork, iext_delta); |
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if (error) |
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goto err_cancel; |
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|
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count = bmap->me_len; |
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error = xfs_trans_log_finish_bmap_update(tp, budp, bui_type, ip, |
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whichfork, bmap->me_startoff, bmap->me_startblock, |
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&count, state); |
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if (error) |
|
goto err_cancel; |
|
|
|
if (count > 0) { |
|
ASSERT(bui_type == XFS_BMAP_UNMAP); |
|
irec.br_startblock = bmap->me_startblock; |
|
irec.br_blockcount = count; |
|
irec.br_startoff = bmap->me_startoff; |
|
irec.br_state = state; |
|
xfs_bmap_unmap_extent(tp, ip, &irec); |
|
} |
|
|
|
/* |
|
* Commit transaction, which frees the transaction and saves the inode |
|
* for later replay activities. |
|
*/ |
|
error = xfs_defer_ops_capture_and_commit(tp, ip, capture_list); |
|
if (error) |
|
goto err_unlock; |
|
|
|
xfs_iunlock(ip, XFS_ILOCK_EXCL); |
|
xfs_irele(ip); |
|
return 0; |
|
|
|
err_cancel: |
|
xfs_trans_cancel(tp); |
|
err_unlock: |
|
xfs_iunlock(ip, XFS_ILOCK_EXCL); |
|
err_rele: |
|
xfs_irele(ip); |
|
return error; |
|
} |
|
|
|
STATIC bool |
|
xfs_bui_item_match( |
|
struct xfs_log_item *lip, |
|
uint64_t intent_id) |
|
{ |
|
return BUI_ITEM(lip)->bui_format.bui_id == intent_id; |
|
} |
|
|
|
/* Relog an intent item to push the log tail forward. */ |
|
static struct xfs_log_item * |
|
xfs_bui_item_relog( |
|
struct xfs_log_item *intent, |
|
struct xfs_trans *tp) |
|
{ |
|
struct xfs_bud_log_item *budp; |
|
struct xfs_bui_log_item *buip; |
|
struct xfs_map_extent *extp; |
|
unsigned int count; |
|
|
|
count = BUI_ITEM(intent)->bui_format.bui_nextents; |
|
extp = BUI_ITEM(intent)->bui_format.bui_extents; |
|
|
|
tp->t_flags |= XFS_TRANS_DIRTY; |
|
budp = xfs_trans_get_bud(tp, BUI_ITEM(intent)); |
|
set_bit(XFS_LI_DIRTY, &budp->bud_item.li_flags); |
|
|
|
buip = xfs_bui_init(tp->t_mountp); |
|
memcpy(buip->bui_format.bui_extents, extp, count * sizeof(*extp)); |
|
atomic_set(&buip->bui_next_extent, count); |
|
xfs_trans_add_item(tp, &buip->bui_item); |
|
set_bit(XFS_LI_DIRTY, &buip->bui_item.li_flags); |
|
return &buip->bui_item; |
|
} |
|
|
|
static const struct xfs_item_ops xfs_bui_item_ops = { |
|
.iop_size = xfs_bui_item_size, |
|
.iop_format = xfs_bui_item_format, |
|
.iop_unpin = xfs_bui_item_unpin, |
|
.iop_release = xfs_bui_item_release, |
|
.iop_recover = xfs_bui_item_recover, |
|
.iop_match = xfs_bui_item_match, |
|
.iop_relog = xfs_bui_item_relog, |
|
}; |
|
|
|
/* |
|
* Copy an BUI format buffer from the given buf, and into the destination |
|
* BUI format structure. The BUI/BUD items were designed not to need any |
|
* special alignment handling. |
|
*/ |
|
static int |
|
xfs_bui_copy_format( |
|
struct xfs_log_iovec *buf, |
|
struct xfs_bui_log_format *dst_bui_fmt) |
|
{ |
|
struct xfs_bui_log_format *src_bui_fmt; |
|
uint len; |
|
|
|
src_bui_fmt = buf->i_addr; |
|
len = xfs_bui_log_format_sizeof(src_bui_fmt->bui_nextents); |
|
|
|
if (buf->i_len == len) { |
|
memcpy(dst_bui_fmt, src_bui_fmt, len); |
|
return 0; |
|
} |
|
XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, NULL); |
|
return -EFSCORRUPTED; |
|
} |
|
|
|
/* |
|
* This routine is called to create an in-core extent bmap update |
|
* item from the bui format structure which was logged on disk. |
|
* It allocates an in-core bui, copies the extents from the format |
|
* structure into it, and adds the bui to the AIL with the given |
|
* LSN. |
|
*/ |
|
STATIC int |
|
xlog_recover_bui_commit_pass2( |
|
struct xlog *log, |
|
struct list_head *buffer_list, |
|
struct xlog_recover_item *item, |
|
xfs_lsn_t lsn) |
|
{ |
|
int error; |
|
struct xfs_mount *mp = log->l_mp; |
|
struct xfs_bui_log_item *buip; |
|
struct xfs_bui_log_format *bui_formatp; |
|
|
|
bui_formatp = item->ri_buf[0].i_addr; |
|
|
|
if (bui_formatp->bui_nextents != XFS_BUI_MAX_FAST_EXTENTS) { |
|
XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, log->l_mp); |
|
return -EFSCORRUPTED; |
|
} |
|
buip = xfs_bui_init(mp); |
|
error = xfs_bui_copy_format(&item->ri_buf[0], &buip->bui_format); |
|
if (error) { |
|
xfs_bui_item_free(buip); |
|
return error; |
|
} |
|
atomic_set(&buip->bui_next_extent, bui_formatp->bui_nextents); |
|
/* |
|
* Insert the intent into the AIL directly and drop one reference so |
|
* that finishing or canceling the work will drop the other. |
|
*/ |
|
xfs_trans_ail_insert(log->l_ailp, &buip->bui_item, lsn); |
|
xfs_bui_release(buip); |
|
return 0; |
|
} |
|
|
|
const struct xlog_recover_item_ops xlog_bui_item_ops = { |
|
.item_type = XFS_LI_BUI, |
|
.commit_pass2 = xlog_recover_bui_commit_pass2, |
|
}; |
|
|
|
/* |
|
* This routine is called when an BUD format structure is found in a committed |
|
* transaction in the log. Its purpose is to cancel the corresponding BUI if it |
|
* was still in the log. To do this it searches the AIL for the BUI with an id |
|
* equal to that in the BUD format structure. If we find it we drop the BUD |
|
* reference, which removes the BUI from the AIL and frees it. |
|
*/ |
|
STATIC int |
|
xlog_recover_bud_commit_pass2( |
|
struct xlog *log, |
|
struct list_head *buffer_list, |
|
struct xlog_recover_item *item, |
|
xfs_lsn_t lsn) |
|
{ |
|
struct xfs_bud_log_format *bud_formatp; |
|
|
|
bud_formatp = item->ri_buf[0].i_addr; |
|
if (item->ri_buf[0].i_len != sizeof(struct xfs_bud_log_format)) { |
|
XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, log->l_mp); |
|
return -EFSCORRUPTED; |
|
} |
|
|
|
xlog_recover_release_intent(log, XFS_LI_BUI, bud_formatp->bud_bui_id); |
|
return 0; |
|
} |
|
|
|
const struct xlog_recover_item_ops xlog_bud_item_ops = { |
|
.item_type = XFS_LI_BUD, |
|
.commit_pass2 = xlog_recover_bud_commit_pass2, |
|
};
|
|
|