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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
- * All Rights Reserved.
- */
- #include "xfs.h"
- #include "xfs_fs.h"
- #include "xfs_format.h"
- #include "xfs_log_format.h"
- #include "xfs_trans_resv.h"
- #include "xfs_bit.h"
- #include "xfs_shared.h"
- #include "xfs_mount.h"
- #include "xfs_ag.h"
- #include "xfs_defer.h"
- #include "xfs_trans.h"
- #include "xfs_trans_priv.h"
- #include "xfs_extfree_item.h"
- #include "xfs_log.h"
- #include "xfs_btree.h"
- #include "xfs_rmap.h"
- #include "xfs_alloc.h"
- #include "xfs_bmap.h"
- #include "xfs_trace.h"
- #include "xfs_error.h"
- #include "xfs_log_priv.h"
- #include "xfs_log_recover.h"
- struct kmem_cache *xfs_efi_cache;
- struct kmem_cache *xfs_efd_cache;
- static const struct xfs_item_ops xfs_efi_item_ops;
- static inline struct xfs_efi_log_item *EFI_ITEM(struct xfs_log_item *lip)
- {
- return container_of(lip, struct xfs_efi_log_item, efi_item);
- }
- STATIC void
- xfs_efi_item_free(
- struct xfs_efi_log_item *efip)
- {
- kmem_free(efip->efi_item.li_lv_shadow);
- if (efip->efi_format.efi_nextents > XFS_EFI_MAX_FAST_EXTENTS)
- kmem_free(efip);
- else
- kmem_cache_free(xfs_efi_cache, efip);
- }
- /*
- * Freeing the efi requires that we remove it from the AIL if it has already
- * been placed there. However, the EFI may not yet have been placed in the AIL
- * when called by xfs_efi_release() from EFD processing due to the ordering of
- * committed vs unpin operations in bulk insert operations. Hence the reference
- * count to ensure only the last caller frees the EFI.
- */
- STATIC void
- xfs_efi_release(
- struct xfs_efi_log_item *efip)
- {
- ASSERT(atomic_read(&efip->efi_refcount) > 0);
- if (!atomic_dec_and_test(&efip->efi_refcount))
- return;
- xfs_trans_ail_delete(&efip->efi_item, 0);
- xfs_efi_item_free(efip);
- }
- STATIC void
- xfs_efi_item_size(
- struct xfs_log_item *lip,
- int *nvecs,
- int *nbytes)
- {
- struct xfs_efi_log_item *efip = EFI_ITEM(lip);
- *nvecs += 1;
- *nbytes += xfs_efi_log_format_sizeof(efip->efi_format.efi_nextents);
- }
- /*
- * This is called to fill in the vector of log iovecs for the
- * given efi log item. We use only 1 iovec, and we point that
- * at the efi_log_format structure embedded in the efi item.
- * It is at this point that we assert that all of the extent
- * slots in the efi item have been filled.
- */
- STATIC void
- xfs_efi_item_format(
- struct xfs_log_item *lip,
- struct xfs_log_vec *lv)
- {
- struct xfs_efi_log_item *efip = EFI_ITEM(lip);
- struct xfs_log_iovec *vecp = NULL;
- ASSERT(atomic_read(&efip->efi_next_extent) ==
- efip->efi_format.efi_nextents);
- efip->efi_format.efi_type = XFS_LI_EFI;
- efip->efi_format.efi_size = 1;
- xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_EFI_FORMAT,
- &efip->efi_format,
- xfs_efi_log_format_sizeof(efip->efi_format.efi_nextents));
- }
- /*
- * The unpin operation is the last place an EFI is manipulated in the log. It is
- * either inserted in the AIL or aborted in the event of a log I/O error. In
- * either case, the EFI transaction has been successfully committed to make it
- * this far. Therefore, we expect whoever committed the EFI to either construct
- * and commit the EFD or drop the EFD's reference in the event of error. Simply
- * drop the log's EFI reference now that the log is done with it.
- */
- STATIC void
- xfs_efi_item_unpin(
- struct xfs_log_item *lip,
- int remove)
- {
- struct xfs_efi_log_item *efip = EFI_ITEM(lip);
- xfs_efi_release(efip);
- }
- /*
- * The EFI has been either committed or aborted if the transaction has been
- * cancelled. If the transaction was cancelled, an EFD isn't going to be
- * constructed and thus we free the EFI here directly.
- */
- STATIC void
- xfs_efi_item_release(
- struct xfs_log_item *lip)
- {
- xfs_efi_release(EFI_ITEM(lip));
- }
- /*
- * Allocate and initialize an efi item with the given number of extents.
- */
- STATIC struct xfs_efi_log_item *
- xfs_efi_init(
- struct xfs_mount *mp,
- uint nextents)
- {
- struct xfs_efi_log_item *efip;
- ASSERT(nextents > 0);
- if (nextents > XFS_EFI_MAX_FAST_EXTENTS) {
- efip = kzalloc(xfs_efi_log_item_sizeof(nextents),
- GFP_KERNEL | __GFP_NOFAIL);
- } else {
- efip = kmem_cache_zalloc(xfs_efi_cache,
- GFP_KERNEL | __GFP_NOFAIL);
- }
- xfs_log_item_init(mp, &efip->efi_item, XFS_LI_EFI, &xfs_efi_item_ops);
- efip->efi_format.efi_nextents = nextents;
- efip->efi_format.efi_id = (uintptr_t)(void *)efip;
- atomic_set(&efip->efi_next_extent, 0);
- atomic_set(&efip->efi_refcount, 2);
- return efip;
- }
- /*
- * Copy an EFI format buffer from the given buf, and into the destination
- * EFI format structure.
- * The given buffer can be in 32 bit or 64 bit form (which has different padding),
- * one of which will be the native format for this kernel.
- * It will handle the conversion of formats if necessary.
- */
- STATIC int
- xfs_efi_copy_format(xfs_log_iovec_t *buf, xfs_efi_log_format_t *dst_efi_fmt)
- {
- xfs_efi_log_format_t *src_efi_fmt = buf->i_addr;
- uint i;
- uint len = xfs_efi_log_format_sizeof(src_efi_fmt->efi_nextents);
- uint len32 = xfs_efi_log_format32_sizeof(src_efi_fmt->efi_nextents);
- uint len64 = xfs_efi_log_format64_sizeof(src_efi_fmt->efi_nextents);
- if (buf->i_len == len) {
- memcpy(dst_efi_fmt, src_efi_fmt,
- offsetof(struct xfs_efi_log_format, efi_extents));
- for (i = 0; i < src_efi_fmt->efi_nextents; i++)
- memcpy(&dst_efi_fmt->efi_extents[i],
- &src_efi_fmt->efi_extents[i],
- sizeof(struct xfs_extent));
- return 0;
- } else if (buf->i_len == len32) {
- xfs_efi_log_format_32_t *src_efi_fmt_32 = buf->i_addr;
- dst_efi_fmt->efi_type = src_efi_fmt_32->efi_type;
- dst_efi_fmt->efi_size = src_efi_fmt_32->efi_size;
- dst_efi_fmt->efi_nextents = src_efi_fmt_32->efi_nextents;
- dst_efi_fmt->efi_id = src_efi_fmt_32->efi_id;
- for (i = 0; i < dst_efi_fmt->efi_nextents; i++) {
- dst_efi_fmt->efi_extents[i].ext_start =
- src_efi_fmt_32->efi_extents[i].ext_start;
- dst_efi_fmt->efi_extents[i].ext_len =
- src_efi_fmt_32->efi_extents[i].ext_len;
- }
- return 0;
- } else if (buf->i_len == len64) {
- xfs_efi_log_format_64_t *src_efi_fmt_64 = buf->i_addr;
- dst_efi_fmt->efi_type = src_efi_fmt_64->efi_type;
- dst_efi_fmt->efi_size = src_efi_fmt_64->efi_size;
- dst_efi_fmt->efi_nextents = src_efi_fmt_64->efi_nextents;
- dst_efi_fmt->efi_id = src_efi_fmt_64->efi_id;
- for (i = 0; i < dst_efi_fmt->efi_nextents; i++) {
- dst_efi_fmt->efi_extents[i].ext_start =
- src_efi_fmt_64->efi_extents[i].ext_start;
- dst_efi_fmt->efi_extents[i].ext_len =
- src_efi_fmt_64->efi_extents[i].ext_len;
- }
- return 0;
- }
- XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, NULL, buf->i_addr,
- buf->i_len);
- return -EFSCORRUPTED;
- }
- static inline struct xfs_efd_log_item *EFD_ITEM(struct xfs_log_item *lip)
- {
- return container_of(lip, struct xfs_efd_log_item, efd_item);
- }
- STATIC void
- xfs_efd_item_free(struct xfs_efd_log_item *efdp)
- {
- kmem_free(efdp->efd_item.li_lv_shadow);
- if (efdp->efd_format.efd_nextents > XFS_EFD_MAX_FAST_EXTENTS)
- kmem_free(efdp);
- else
- kmem_cache_free(xfs_efd_cache, efdp);
- }
- STATIC void
- xfs_efd_item_size(
- struct xfs_log_item *lip,
- int *nvecs,
- int *nbytes)
- {
- struct xfs_efd_log_item *efdp = EFD_ITEM(lip);
- *nvecs += 1;
- *nbytes += xfs_efd_log_format_sizeof(efdp->efd_format.efd_nextents);
- }
- /*
- * This is called to fill in the vector of log iovecs for the
- * given efd log item. We use only 1 iovec, and we point that
- * at the efd_log_format structure embedded in the efd item.
- * It is at this point that we assert that all of the extent
- * slots in the efd item have been filled.
- */
- STATIC void
- xfs_efd_item_format(
- struct xfs_log_item *lip,
- struct xfs_log_vec *lv)
- {
- struct xfs_efd_log_item *efdp = EFD_ITEM(lip);
- struct xfs_log_iovec *vecp = NULL;
- ASSERT(efdp->efd_next_extent == efdp->efd_format.efd_nextents);
- efdp->efd_format.efd_type = XFS_LI_EFD;
- efdp->efd_format.efd_size = 1;
- xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_EFD_FORMAT,
- &efdp->efd_format,
- xfs_efd_log_format_sizeof(efdp->efd_format.efd_nextents));
- }
- /*
- * The EFD is either committed or aborted if the transaction is cancelled. If
- * the transaction is cancelled, drop our reference to the EFI and free the EFD.
- */
- STATIC void
- xfs_efd_item_release(
- struct xfs_log_item *lip)
- {
- struct xfs_efd_log_item *efdp = EFD_ITEM(lip);
- xfs_efi_release(efdp->efd_efip);
- xfs_efd_item_free(efdp);
- }
- static struct xfs_log_item *
- xfs_efd_item_intent(
- struct xfs_log_item *lip)
- {
- return &EFD_ITEM(lip)->efd_efip->efi_item;
- }
- static const struct xfs_item_ops xfs_efd_item_ops = {
- .flags = XFS_ITEM_RELEASE_WHEN_COMMITTED |
- XFS_ITEM_INTENT_DONE,
- .iop_size = xfs_efd_item_size,
- .iop_format = xfs_efd_item_format,
- .iop_release = xfs_efd_item_release,
- .iop_intent = xfs_efd_item_intent,
- };
- /*
- * Allocate an "extent free done" log item that will hold nextents worth of
- * extents. The caller must use all nextents extents, because we are not
- * flexible about this at all.
- */
- static struct xfs_efd_log_item *
- xfs_trans_get_efd(
- struct xfs_trans *tp,
- struct xfs_efi_log_item *efip,
- unsigned int nextents)
- {
- struct xfs_efd_log_item *efdp;
- ASSERT(nextents > 0);
- if (nextents > XFS_EFD_MAX_FAST_EXTENTS) {
- efdp = kzalloc(xfs_efd_log_item_sizeof(nextents),
- GFP_KERNEL | __GFP_NOFAIL);
- } else {
- efdp = kmem_cache_zalloc(xfs_efd_cache,
- GFP_KERNEL | __GFP_NOFAIL);
- }
- xfs_log_item_init(tp->t_mountp, &efdp->efd_item, XFS_LI_EFD,
- &xfs_efd_item_ops);
- efdp->efd_efip = efip;
- efdp->efd_format.efd_nextents = nextents;
- efdp->efd_format.efd_efi_id = efip->efi_format.efi_id;
- xfs_trans_add_item(tp, &efdp->efd_item);
- return efdp;
- }
- /*
- * Free an extent and log it to the EFD. Note that the transaction is marked
- * dirty regardless of whether the extent free succeeds or fails to support the
- * EFI/EFD lifecycle rules.
- */
- static int
- xfs_trans_free_extent(
- struct xfs_trans *tp,
- struct xfs_efd_log_item *efdp,
- xfs_fsblock_t start_block,
- xfs_extlen_t ext_len,
- const struct xfs_owner_info *oinfo,
- bool skip_discard)
- {
- struct xfs_mount *mp = tp->t_mountp;
- struct xfs_extent *extp;
- uint next_extent;
- xfs_agnumber_t agno = XFS_FSB_TO_AGNO(mp, start_block);
- xfs_agblock_t agbno = XFS_FSB_TO_AGBNO(mp,
- start_block);
- int error;
- trace_xfs_bmap_free_deferred(tp->t_mountp, agno, 0, agbno, ext_len);
- error = __xfs_free_extent(tp, start_block, ext_len,
- oinfo, XFS_AG_RESV_NONE, skip_discard);
- /*
- * Mark the transaction dirty, even on error. This ensures the
- * transaction is aborted, which:
- *
- * 1.) releases the EFI and frees the EFD
- * 2.) shuts down the filesystem
- */
- tp->t_flags |= XFS_TRANS_DIRTY | XFS_TRANS_HAS_INTENT_DONE;
- set_bit(XFS_LI_DIRTY, &efdp->efd_item.li_flags);
- next_extent = efdp->efd_next_extent;
- ASSERT(next_extent < efdp->efd_format.efd_nextents);
- extp = &(efdp->efd_format.efd_extents[next_extent]);
- extp->ext_start = start_block;
- extp->ext_len = ext_len;
- efdp->efd_next_extent++;
- return error;
- }
- /* Sort bmap items by AG. */
- static int
- xfs_extent_free_diff_items(
- void *priv,
- const struct list_head *a,
- const struct list_head *b)
- {
- struct xfs_mount *mp = priv;
- struct xfs_extent_free_item *ra;
- struct xfs_extent_free_item *rb;
- ra = container_of(a, struct xfs_extent_free_item, xefi_list);
- rb = container_of(b, struct xfs_extent_free_item, xefi_list);
- return XFS_FSB_TO_AGNO(mp, ra->xefi_startblock) -
- XFS_FSB_TO_AGNO(mp, rb->xefi_startblock);
- }
- /* Log a free extent to the intent item. */
- STATIC void
- xfs_extent_free_log_item(
- struct xfs_trans *tp,
- struct xfs_efi_log_item *efip,
- struct xfs_extent_free_item *free)
- {
- uint next_extent;
- struct xfs_extent *extp;
- tp->t_flags |= XFS_TRANS_DIRTY;
- set_bit(XFS_LI_DIRTY, &efip->efi_item.li_flags);
- /*
- * atomic_inc_return gives us the value after the increment;
- * we want to use it as an array index so we need to subtract 1 from
- * it.
- */
- next_extent = atomic_inc_return(&efip->efi_next_extent) - 1;
- ASSERT(next_extent < efip->efi_format.efi_nextents);
- extp = &efip->efi_format.efi_extents[next_extent];
- extp->ext_start = free->xefi_startblock;
- extp->ext_len = free->xefi_blockcount;
- }
- static struct xfs_log_item *
- xfs_extent_free_create_intent(
- struct xfs_trans *tp,
- struct list_head *items,
- unsigned int count,
- bool sort)
- {
- struct xfs_mount *mp = tp->t_mountp;
- struct xfs_efi_log_item *efip = xfs_efi_init(mp, count);
- struct xfs_extent_free_item *free;
- ASSERT(count > 0);
- xfs_trans_add_item(tp, &efip->efi_item);
- if (sort)
- list_sort(mp, items, xfs_extent_free_diff_items);
- list_for_each_entry(free, items, xefi_list)
- xfs_extent_free_log_item(tp, efip, free);
- return &efip->efi_item;
- }
- /* Get an EFD so we can process all the free extents. */
- static struct xfs_log_item *
- xfs_extent_free_create_done(
- struct xfs_trans *tp,
- struct xfs_log_item *intent,
- unsigned int count)
- {
- return &xfs_trans_get_efd(tp, EFI_ITEM(intent), count)->efd_item;
- }
- /* Process a free extent. */
- STATIC int
- xfs_extent_free_finish_item(
- struct xfs_trans *tp,
- struct xfs_log_item *done,
- struct list_head *item,
- struct xfs_btree_cur **state)
- {
- struct xfs_owner_info oinfo = { };
- struct xfs_extent_free_item *free;
- int error;
- free = container_of(item, struct xfs_extent_free_item, xefi_list);
- oinfo.oi_owner = free->xefi_owner;
- if (free->xefi_flags & XFS_EFI_ATTR_FORK)
- oinfo.oi_flags |= XFS_OWNER_INFO_ATTR_FORK;
- if (free->xefi_flags & XFS_EFI_BMBT_BLOCK)
- oinfo.oi_flags |= XFS_OWNER_INFO_BMBT_BLOCK;
- error = xfs_trans_free_extent(tp, EFD_ITEM(done),
- free->xefi_startblock,
- free->xefi_blockcount,
- &oinfo, free->xefi_flags & XFS_EFI_SKIP_DISCARD);
- kmem_cache_free(xfs_extfree_item_cache, free);
- return error;
- }
- /* Abort all pending EFIs. */
- STATIC void
- xfs_extent_free_abort_intent(
- struct xfs_log_item *intent)
- {
- xfs_efi_release(EFI_ITEM(intent));
- }
- /* Cancel a free extent. */
- STATIC void
- xfs_extent_free_cancel_item(
- struct list_head *item)
- {
- struct xfs_extent_free_item *free;
- free = container_of(item, struct xfs_extent_free_item, xefi_list);
- kmem_cache_free(xfs_extfree_item_cache, free);
- }
- const struct xfs_defer_op_type xfs_extent_free_defer_type = {
- .max_items = XFS_EFI_MAX_FAST_EXTENTS,
- .create_intent = xfs_extent_free_create_intent,
- .abort_intent = xfs_extent_free_abort_intent,
- .create_done = xfs_extent_free_create_done,
- .finish_item = xfs_extent_free_finish_item,
- .cancel_item = xfs_extent_free_cancel_item,
- };
- /*
- * AGFL blocks are accounted differently in the reserve pools and are not
- * inserted into the busy extent list.
- */
- STATIC int
- xfs_agfl_free_finish_item(
- struct xfs_trans *tp,
- struct xfs_log_item *done,
- struct list_head *item,
- struct xfs_btree_cur **state)
- {
- struct xfs_owner_info oinfo = { };
- struct xfs_mount *mp = tp->t_mountp;
- struct xfs_efd_log_item *efdp = EFD_ITEM(done);
- struct xfs_extent_free_item *free;
- struct xfs_extent *extp;
- struct xfs_buf *agbp;
- int error;
- xfs_agnumber_t agno;
- xfs_agblock_t agbno;
- uint next_extent;
- struct xfs_perag *pag;
- free = container_of(item, struct xfs_extent_free_item, xefi_list);
- ASSERT(free->xefi_blockcount == 1);
- agno = XFS_FSB_TO_AGNO(mp, free->xefi_startblock);
- agbno = XFS_FSB_TO_AGBNO(mp, free->xefi_startblock);
- oinfo.oi_owner = free->xefi_owner;
- trace_xfs_agfl_free_deferred(mp, agno, 0, agbno, free->xefi_blockcount);
- pag = xfs_perag_get(mp, agno);
- error = xfs_alloc_read_agf(pag, tp, 0, &agbp);
- if (!error)
- error = xfs_free_agfl_block(tp, agno, agbno, agbp, &oinfo);
- xfs_perag_put(pag);
- /*
- * Mark the transaction dirty, even on error. This ensures the
- * transaction is aborted, which:
- *
- * 1.) releases the EFI and frees the EFD
- * 2.) shuts down the filesystem
- */
- tp->t_flags |= XFS_TRANS_DIRTY;
- set_bit(XFS_LI_DIRTY, &efdp->efd_item.li_flags);
- next_extent = efdp->efd_next_extent;
- ASSERT(next_extent < efdp->efd_format.efd_nextents);
- extp = &(efdp->efd_format.efd_extents[next_extent]);
- extp->ext_start = free->xefi_startblock;
- extp->ext_len = free->xefi_blockcount;
- efdp->efd_next_extent++;
- kmem_cache_free(xfs_extfree_item_cache, free);
- return error;
- }
- /* sub-type with special handling for AGFL deferred frees */
- const struct xfs_defer_op_type xfs_agfl_free_defer_type = {
- .max_items = XFS_EFI_MAX_FAST_EXTENTS,
- .create_intent = xfs_extent_free_create_intent,
- .abort_intent = xfs_extent_free_abort_intent,
- .create_done = xfs_extent_free_create_done,
- .finish_item = xfs_agfl_free_finish_item,
- .cancel_item = xfs_extent_free_cancel_item,
- };
- /* Is this recovered EFI ok? */
- static inline bool
- xfs_efi_validate_ext(
- struct xfs_mount *mp,
- struct xfs_extent *extp)
- {
- return xfs_verify_fsbext(mp, extp->ext_start, extp->ext_len);
- }
- /*
- * Process an extent free intent item that was recovered from
- * the log. We need to free the extents that it describes.
- */
- STATIC int
- xfs_efi_item_recover(
- struct xfs_log_item *lip,
- struct list_head *capture_list)
- {
- struct xfs_efi_log_item *efip = EFI_ITEM(lip);
- struct xfs_mount *mp = lip->li_log->l_mp;
- struct xfs_efd_log_item *efdp;
- struct xfs_trans *tp;
- struct xfs_extent *extp;
- int i;
- int error = 0;
- /*
- * First check the validity of the extents described by the
- * EFI. If any are bad, then assume that all are bad and
- * just toss the EFI.
- */
- for (i = 0; i < efip->efi_format.efi_nextents; i++) {
- if (!xfs_efi_validate_ext(mp,
- &efip->efi_format.efi_extents[i])) {
- XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
- &efip->efi_format,
- sizeof(efip->efi_format));
- return -EFSCORRUPTED;
- }
- }
- error = xfs_trans_alloc(mp, &M_RES(mp)->tr_itruncate, 0, 0, 0, &tp);
- if (error)
- return error;
- efdp = xfs_trans_get_efd(tp, efip, efip->efi_format.efi_nextents);
- for (i = 0; i < efip->efi_format.efi_nextents; i++) {
- extp = &efip->efi_format.efi_extents[i];
- error = xfs_trans_free_extent(tp, efdp, extp->ext_start,
- extp->ext_len,
- &XFS_RMAP_OINFO_ANY_OWNER, false);
- if (error == -EFSCORRUPTED)
- XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
- extp, sizeof(*extp));
- if (error)
- goto abort_error;
- }
- return xfs_defer_ops_capture_and_commit(tp, capture_list);
- abort_error:
- xfs_trans_cancel(tp);
- return error;
- }
- STATIC bool
- xfs_efi_item_match(
- struct xfs_log_item *lip,
- uint64_t intent_id)
- {
- return EFI_ITEM(lip)->efi_format.efi_id == intent_id;
- }
- /* Relog an intent item to push the log tail forward. */
- static struct xfs_log_item *
- xfs_efi_item_relog(
- struct xfs_log_item *intent,
- struct xfs_trans *tp)
- {
- struct xfs_efd_log_item *efdp;
- struct xfs_efi_log_item *efip;
- struct xfs_extent *extp;
- unsigned int count;
- count = EFI_ITEM(intent)->efi_format.efi_nextents;
- extp = EFI_ITEM(intent)->efi_format.efi_extents;
- tp->t_flags |= XFS_TRANS_DIRTY;
- efdp = xfs_trans_get_efd(tp, EFI_ITEM(intent), count);
- efdp->efd_next_extent = count;
- memcpy(efdp->efd_format.efd_extents, extp, count * sizeof(*extp));
- set_bit(XFS_LI_DIRTY, &efdp->efd_item.li_flags);
- efip = xfs_efi_init(tp->t_mountp, count);
- memcpy(efip->efi_format.efi_extents, extp, count * sizeof(*extp));
- atomic_set(&efip->efi_next_extent, count);
- xfs_trans_add_item(tp, &efip->efi_item);
- set_bit(XFS_LI_DIRTY, &efip->efi_item.li_flags);
- return &efip->efi_item;
- }
- static const struct xfs_item_ops xfs_efi_item_ops = {
- .flags = XFS_ITEM_INTENT,
- .iop_size = xfs_efi_item_size,
- .iop_format = xfs_efi_item_format,
- .iop_unpin = xfs_efi_item_unpin,
- .iop_release = xfs_efi_item_release,
- .iop_recover = xfs_efi_item_recover,
- .iop_match = xfs_efi_item_match,
- .iop_relog = xfs_efi_item_relog,
- };
- /*
- * This routine is called to create an in-core extent free intent
- * item from the efi format structure which was logged on disk.
- * It allocates an in-core efi, copies the extents from the format
- * structure into it, and adds the efi to the AIL with the given
- * LSN.
- */
- STATIC int
- xlog_recover_efi_commit_pass2(
- struct xlog *log,
- struct list_head *buffer_list,
- struct xlog_recover_item *item,
- xfs_lsn_t lsn)
- {
- struct xfs_mount *mp = log->l_mp;
- struct xfs_efi_log_item *efip;
- struct xfs_efi_log_format *efi_formatp;
- int error;
- efi_formatp = item->ri_buf[0].i_addr;
- if (item->ri_buf[0].i_len < xfs_efi_log_format_sizeof(0)) {
- XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
- item->ri_buf[0].i_addr, item->ri_buf[0].i_len);
- return -EFSCORRUPTED;
- }
- efip = xfs_efi_init(mp, efi_formatp->efi_nextents);
- error = xfs_efi_copy_format(&item->ri_buf[0], &efip->efi_format);
- if (error) {
- xfs_efi_item_free(efip);
- return error;
- }
- atomic_set(&efip->efi_next_extent, efi_formatp->efi_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, &efip->efi_item, lsn);
- xfs_efi_release(efip);
- return 0;
- }
- const struct xlog_recover_item_ops xlog_efi_item_ops = {
- .item_type = XFS_LI_EFI,
- .commit_pass2 = xlog_recover_efi_commit_pass2,
- };
- /*
- * This routine is called when an EFD format structure is found in a committed
- * transaction in the log. Its purpose is to cancel the corresponding EFI if it
- * was still in the log. To do this it searches the AIL for the EFI with an id
- * equal to that in the EFD format structure. If we find it we drop the EFD
- * reference, which removes the EFI from the AIL and frees it.
- */
- STATIC int
- xlog_recover_efd_commit_pass2(
- struct xlog *log,
- struct list_head *buffer_list,
- struct xlog_recover_item *item,
- xfs_lsn_t lsn)
- {
- struct xfs_efd_log_format *efd_formatp;
- int buflen = item->ri_buf[0].i_len;
- efd_formatp = item->ri_buf[0].i_addr;
- if (buflen < sizeof(struct xfs_efd_log_format)) {
- XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, log->l_mp,
- efd_formatp, buflen);
- return -EFSCORRUPTED;
- }
- if (item->ri_buf[0].i_len != xfs_efd_log_format32_sizeof(
- efd_formatp->efd_nextents) &&
- item->ri_buf[0].i_len != xfs_efd_log_format64_sizeof(
- efd_formatp->efd_nextents)) {
- XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, log->l_mp,
- efd_formatp, buflen);
- return -EFSCORRUPTED;
- }
- xlog_recover_release_intent(log, XFS_LI_EFI, efd_formatp->efd_efi_id);
- return 0;
- }
- const struct xlog_recover_item_ops xlog_efd_item_ops = {
- .item_type = XFS_LI_EFD,
- .commit_pass2 = xlog_recover_efd_commit_pass2,
- };
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