From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- fs/xfs/xfs_refcount_item.c | 743 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 743 insertions(+) create mode 100644 fs/xfs/xfs_refcount_item.c (limited to 'fs/xfs/xfs_refcount_item.c') diff --git a/fs/xfs/xfs_refcount_item.c b/fs/xfs/xfs_refcount_item.c new file mode 100644 index 0000000000..2d4444d61e --- /dev/null +++ b/fs/xfs/xfs_refcount_item.c @@ -0,0 +1,743 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Oracle. All Rights Reserved. + * Author: Darrick J. Wong + */ +#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_defer.h" +#include "xfs_trans.h" +#include "xfs_trans_priv.h" +#include "xfs_refcount_item.h" +#include "xfs_log.h" +#include "xfs_refcount.h" +#include "xfs_error.h" +#include "xfs_log_priv.h" +#include "xfs_log_recover.h" +#include "xfs_ag.h" + +struct kmem_cache *xfs_cui_cache; +struct kmem_cache *xfs_cud_cache; + +static const struct xfs_item_ops xfs_cui_item_ops; + +static inline struct xfs_cui_log_item *CUI_ITEM(struct xfs_log_item *lip) +{ + return container_of(lip, struct xfs_cui_log_item, cui_item); +} + +STATIC void +xfs_cui_item_free( + struct xfs_cui_log_item *cuip) +{ + kmem_free(cuip->cui_item.li_lv_shadow); + if (cuip->cui_format.cui_nextents > XFS_CUI_MAX_FAST_EXTENTS) + kmem_free(cuip); + else + kmem_cache_free(xfs_cui_cache, cuip); +} + +/* + * Freeing the CUI requires that we remove it from the AIL if it has already + * been placed there. However, the CUI may not yet have been placed in the AIL + * when called by xfs_cui_release() from CUD 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 CUI. + */ +STATIC void +xfs_cui_release( + struct xfs_cui_log_item *cuip) +{ + ASSERT(atomic_read(&cuip->cui_refcount) > 0); + if (!atomic_dec_and_test(&cuip->cui_refcount)) + return; + + xfs_trans_ail_delete(&cuip->cui_item, 0); + xfs_cui_item_free(cuip); +} + + +STATIC void +xfs_cui_item_size( + struct xfs_log_item *lip, + int *nvecs, + int *nbytes) +{ + struct xfs_cui_log_item *cuip = CUI_ITEM(lip); + + *nvecs += 1; + *nbytes += xfs_cui_log_format_sizeof(cuip->cui_format.cui_nextents); +} + +/* + * This is called to fill in the vector of log iovecs for the + * given cui log item. We use only 1 iovec, and we point that + * at the cui_log_format structure embedded in the cui item. + * It is at this point that we assert that all of the extent + * slots in the cui item have been filled. + */ +STATIC void +xfs_cui_item_format( + struct xfs_log_item *lip, + struct xfs_log_vec *lv) +{ + struct xfs_cui_log_item *cuip = CUI_ITEM(lip); + struct xfs_log_iovec *vecp = NULL; + + ASSERT(atomic_read(&cuip->cui_next_extent) == + cuip->cui_format.cui_nextents); + + cuip->cui_format.cui_type = XFS_LI_CUI; + cuip->cui_format.cui_size = 1; + + xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_CUI_FORMAT, &cuip->cui_format, + xfs_cui_log_format_sizeof(cuip->cui_format.cui_nextents)); +} + +/* + * The unpin operation is the last place an CUI 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 CUI transaction has been successfully committed to make it + * this far. Therefore, we expect whoever committed the CUI to either construct + * and commit the CUD or drop the CUD's reference in the event of error. Simply + * drop the log's CUI reference now that the log is done with it. + */ +STATIC void +xfs_cui_item_unpin( + struct xfs_log_item *lip, + int remove) +{ + struct xfs_cui_log_item *cuip = CUI_ITEM(lip); + + xfs_cui_release(cuip); +} + +/* + * The CUI has been either committed or aborted if the transaction has been + * cancelled. If the transaction was cancelled, an CUD isn't going to be + * constructed and thus we free the CUI here directly. + */ +STATIC void +xfs_cui_item_release( + struct xfs_log_item *lip) +{ + xfs_cui_release(CUI_ITEM(lip)); +} + +/* + * Allocate and initialize an cui item with the given number of extents. + */ +STATIC struct xfs_cui_log_item * +xfs_cui_init( + struct xfs_mount *mp, + uint nextents) + +{ + struct xfs_cui_log_item *cuip; + + ASSERT(nextents > 0); + if (nextents > XFS_CUI_MAX_FAST_EXTENTS) + cuip = kmem_zalloc(xfs_cui_log_item_sizeof(nextents), + 0); + else + cuip = kmem_cache_zalloc(xfs_cui_cache, + GFP_KERNEL | __GFP_NOFAIL); + + xfs_log_item_init(mp, &cuip->cui_item, XFS_LI_CUI, &xfs_cui_item_ops); + cuip->cui_format.cui_nextents = nextents; + cuip->cui_format.cui_id = (uintptr_t)(void *)cuip; + atomic_set(&cuip->cui_next_extent, 0); + atomic_set(&cuip->cui_refcount, 2); + + return cuip; +} + +static inline struct xfs_cud_log_item *CUD_ITEM(struct xfs_log_item *lip) +{ + return container_of(lip, struct xfs_cud_log_item, cud_item); +} + +STATIC void +xfs_cud_item_size( + struct xfs_log_item *lip, + int *nvecs, + int *nbytes) +{ + *nvecs += 1; + *nbytes += sizeof(struct xfs_cud_log_format); +} + +/* + * This is called to fill in the vector of log iovecs for the + * given cud log item. We use only 1 iovec, and we point that + * at the cud_log_format structure embedded in the cud item. + * It is at this point that we assert that all of the extent + * slots in the cud item have been filled. + */ +STATIC void +xfs_cud_item_format( + struct xfs_log_item *lip, + struct xfs_log_vec *lv) +{ + struct xfs_cud_log_item *cudp = CUD_ITEM(lip); + struct xfs_log_iovec *vecp = NULL; + + cudp->cud_format.cud_type = XFS_LI_CUD; + cudp->cud_format.cud_size = 1; + + xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_CUD_FORMAT, &cudp->cud_format, + sizeof(struct xfs_cud_log_format)); +} + +/* + * The CUD is either committed or aborted if the transaction is cancelled. If + * the transaction is cancelled, drop our reference to the CUI and free the + * CUD. + */ +STATIC void +xfs_cud_item_release( + struct xfs_log_item *lip) +{ + struct xfs_cud_log_item *cudp = CUD_ITEM(lip); + + xfs_cui_release(cudp->cud_cuip); + kmem_free(cudp->cud_item.li_lv_shadow); + kmem_cache_free(xfs_cud_cache, cudp); +} + +static struct xfs_log_item * +xfs_cud_item_intent( + struct xfs_log_item *lip) +{ + return &CUD_ITEM(lip)->cud_cuip->cui_item; +} + +static const struct xfs_item_ops xfs_cud_item_ops = { + .flags = XFS_ITEM_RELEASE_WHEN_COMMITTED | + XFS_ITEM_INTENT_DONE, + .iop_size = xfs_cud_item_size, + .iop_format = xfs_cud_item_format, + .iop_release = xfs_cud_item_release, + .iop_intent = xfs_cud_item_intent, +}; + +static struct xfs_cud_log_item * +xfs_trans_get_cud( + struct xfs_trans *tp, + struct xfs_cui_log_item *cuip) +{ + struct xfs_cud_log_item *cudp; + + cudp = kmem_cache_zalloc(xfs_cud_cache, GFP_KERNEL | __GFP_NOFAIL); + xfs_log_item_init(tp->t_mountp, &cudp->cud_item, XFS_LI_CUD, + &xfs_cud_item_ops); + cudp->cud_cuip = cuip; + cudp->cud_format.cud_cui_id = cuip->cui_format.cui_id; + + xfs_trans_add_item(tp, &cudp->cud_item); + return cudp; +} + +/* + * Finish an refcount update and log it to the CUD. Note that the + * transaction is marked dirty regardless of whether the refcount + * update succeeds or fails to support the CUI/CUD lifecycle rules. + */ +static int +xfs_trans_log_finish_refcount_update( + struct xfs_trans *tp, + struct xfs_cud_log_item *cudp, + struct xfs_refcount_intent *ri, + struct xfs_btree_cur **pcur) +{ + int error; + + error = xfs_refcount_finish_one(tp, ri, pcur); + + /* + * Mark the transaction dirty, even on error. This ensures the + * transaction is aborted, which: + * + * 1.) releases the CUI and frees the CUD + * 2.) shuts down the filesystem + */ + tp->t_flags |= XFS_TRANS_DIRTY | XFS_TRANS_HAS_INTENT_DONE; + set_bit(XFS_LI_DIRTY, &cudp->cud_item.li_flags); + + return error; +} + +/* Sort refcount intents by AG. */ +static int +xfs_refcount_update_diff_items( + void *priv, + const struct list_head *a, + const struct list_head *b) +{ + struct xfs_refcount_intent *ra; + struct xfs_refcount_intent *rb; + + ra = container_of(a, struct xfs_refcount_intent, ri_list); + rb = container_of(b, struct xfs_refcount_intent, ri_list); + + return ra->ri_pag->pag_agno - rb->ri_pag->pag_agno; +} + +/* Set the phys extent flags for this reverse mapping. */ +static void +xfs_trans_set_refcount_flags( + struct xfs_phys_extent *pmap, + enum xfs_refcount_intent_type type) +{ + pmap->pe_flags = 0; + switch (type) { + case XFS_REFCOUNT_INCREASE: + case XFS_REFCOUNT_DECREASE: + case XFS_REFCOUNT_ALLOC_COW: + case XFS_REFCOUNT_FREE_COW: + pmap->pe_flags |= type; + break; + default: + ASSERT(0); + } +} + +/* Log refcount updates in the intent item. */ +STATIC void +xfs_refcount_update_log_item( + struct xfs_trans *tp, + struct xfs_cui_log_item *cuip, + struct xfs_refcount_intent *ri) +{ + uint next_extent; + struct xfs_phys_extent *pmap; + + tp->t_flags |= XFS_TRANS_DIRTY; + set_bit(XFS_LI_DIRTY, &cuip->cui_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(&cuip->cui_next_extent) - 1; + ASSERT(next_extent < cuip->cui_format.cui_nextents); + pmap = &cuip->cui_format.cui_extents[next_extent]; + pmap->pe_startblock = ri->ri_startblock; + pmap->pe_len = ri->ri_blockcount; + xfs_trans_set_refcount_flags(pmap, ri->ri_type); +} + +static struct xfs_log_item * +xfs_refcount_update_create_intent( + struct xfs_trans *tp, + struct list_head *items, + unsigned int count, + bool sort) +{ + struct xfs_mount *mp = tp->t_mountp; + struct xfs_cui_log_item *cuip = xfs_cui_init(mp, count); + struct xfs_refcount_intent *ri; + + ASSERT(count > 0); + + xfs_trans_add_item(tp, &cuip->cui_item); + if (sort) + list_sort(mp, items, xfs_refcount_update_diff_items); + list_for_each_entry(ri, items, ri_list) + xfs_refcount_update_log_item(tp, cuip, ri); + return &cuip->cui_item; +} + +/* Get an CUD so we can process all the deferred refcount updates. */ +static struct xfs_log_item * +xfs_refcount_update_create_done( + struct xfs_trans *tp, + struct xfs_log_item *intent, + unsigned int count) +{ + return &xfs_trans_get_cud(tp, CUI_ITEM(intent))->cud_item; +} + +/* Take a passive ref to the AG containing the space we're refcounting. */ +void +xfs_refcount_update_get_group( + struct xfs_mount *mp, + struct xfs_refcount_intent *ri) +{ + xfs_agnumber_t agno; + + agno = XFS_FSB_TO_AGNO(mp, ri->ri_startblock); + ri->ri_pag = xfs_perag_intent_get(mp, agno); +} + +/* Release a passive AG ref after finishing refcounting work. */ +static inline void +xfs_refcount_update_put_group( + struct xfs_refcount_intent *ri) +{ + xfs_perag_intent_put(ri->ri_pag); +} + +/* Process a deferred refcount update. */ +STATIC int +xfs_refcount_update_finish_item( + struct xfs_trans *tp, + struct xfs_log_item *done, + struct list_head *item, + struct xfs_btree_cur **state) +{ + struct xfs_refcount_intent *ri; + int error; + + ri = container_of(item, struct xfs_refcount_intent, ri_list); + error = xfs_trans_log_finish_refcount_update(tp, CUD_ITEM(done), ri, + state); + + /* Did we run out of reservation? Requeue what we didn't finish. */ + if (!error && ri->ri_blockcount > 0) { + ASSERT(ri->ri_type == XFS_REFCOUNT_INCREASE || + ri->ri_type == XFS_REFCOUNT_DECREASE); + return -EAGAIN; + } + + xfs_refcount_update_put_group(ri); + kmem_cache_free(xfs_refcount_intent_cache, ri); + return error; +} + +/* Abort all pending CUIs. */ +STATIC void +xfs_refcount_update_abort_intent( + struct xfs_log_item *intent) +{ + xfs_cui_release(CUI_ITEM(intent)); +} + +/* Cancel a deferred refcount update. */ +STATIC void +xfs_refcount_update_cancel_item( + struct list_head *item) +{ + struct xfs_refcount_intent *ri; + + ri = container_of(item, struct xfs_refcount_intent, ri_list); + + xfs_refcount_update_put_group(ri); + kmem_cache_free(xfs_refcount_intent_cache, ri); +} + +const struct xfs_defer_op_type xfs_refcount_update_defer_type = { + .max_items = XFS_CUI_MAX_FAST_EXTENTS, + .create_intent = xfs_refcount_update_create_intent, + .abort_intent = xfs_refcount_update_abort_intent, + .create_done = xfs_refcount_update_create_done, + .finish_item = xfs_refcount_update_finish_item, + .finish_cleanup = xfs_refcount_finish_one_cleanup, + .cancel_item = xfs_refcount_update_cancel_item, +}; + +/* Is this recovered CUI ok? */ +static inline bool +xfs_cui_validate_phys( + struct xfs_mount *mp, + struct xfs_phys_extent *pmap) +{ + if (!xfs_has_reflink(mp)) + return false; + + if (pmap->pe_flags & ~XFS_REFCOUNT_EXTENT_FLAGS) + return false; + + switch (pmap->pe_flags & XFS_REFCOUNT_EXTENT_TYPE_MASK) { + case XFS_REFCOUNT_INCREASE: + case XFS_REFCOUNT_DECREASE: + case XFS_REFCOUNT_ALLOC_COW: + case XFS_REFCOUNT_FREE_COW: + break; + default: + return false; + } + + return xfs_verify_fsbext(mp, pmap->pe_startblock, pmap->pe_len); +} + +/* + * Process a refcount update intent item that was recovered from the log. + * We need to update the refcountbt. + */ +STATIC int +xfs_cui_item_recover( + struct xfs_log_item *lip, + struct list_head *capture_list) +{ + struct xfs_trans_res resv; + struct xfs_cui_log_item *cuip = CUI_ITEM(lip); + struct xfs_cud_log_item *cudp; + struct xfs_trans *tp; + struct xfs_btree_cur *rcur = NULL; + struct xfs_mount *mp = lip->li_log->l_mp; + unsigned int refc_type; + bool requeue_only = false; + int i; + int error = 0; + + /* + * First check the validity of the extents described by the + * CUI. If any are bad, then assume that all are bad and + * just toss the CUI. + */ + for (i = 0; i < cuip->cui_format.cui_nextents; i++) { + if (!xfs_cui_validate_phys(mp, + &cuip->cui_format.cui_extents[i])) { + XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, + &cuip->cui_format, + sizeof(cuip->cui_format)); + return -EFSCORRUPTED; + } + } + + /* + * Under normal operation, refcount updates are deferred, so we + * wouldn't be adding them directly to a transaction. All + * refcount updates manage reservation usage internally and + * dynamically by deferring work that won't fit in the + * transaction. Normally, any work that needs to be deferred + * gets attached to the same defer_ops that scheduled the + * refcount update. However, we're in log recovery here, so we + * use the passed in defer_ops and to finish up any work that + * doesn't fit. We need to reserve enough blocks to handle a + * full btree split on either end of the refcount range. + */ + resv = xlog_recover_resv(&M_RES(mp)->tr_itruncate); + error = xfs_trans_alloc(mp, &resv, mp->m_refc_maxlevels * 2, 0, + XFS_TRANS_RESERVE, &tp); + if (error) + return error; + + cudp = xfs_trans_get_cud(tp, cuip); + + for (i = 0; i < cuip->cui_format.cui_nextents; i++) { + struct xfs_refcount_intent fake = { }; + struct xfs_phys_extent *pmap; + + pmap = &cuip->cui_format.cui_extents[i]; + refc_type = pmap->pe_flags & XFS_REFCOUNT_EXTENT_TYPE_MASK; + switch (refc_type) { + case XFS_REFCOUNT_INCREASE: + case XFS_REFCOUNT_DECREASE: + case XFS_REFCOUNT_ALLOC_COW: + case XFS_REFCOUNT_FREE_COW: + fake.ri_type = refc_type; + break; + default: + XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, + &cuip->cui_format, + sizeof(cuip->cui_format)); + error = -EFSCORRUPTED; + goto abort_error; + } + + fake.ri_startblock = pmap->pe_startblock; + fake.ri_blockcount = pmap->pe_len; + + if (!requeue_only) { + xfs_refcount_update_get_group(mp, &fake); + error = xfs_trans_log_finish_refcount_update(tp, cudp, + &fake, &rcur); + xfs_refcount_update_put_group(&fake); + } + if (error == -EFSCORRUPTED) + XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, + &cuip->cui_format, + sizeof(cuip->cui_format)); + if (error) + goto abort_error; + + /* Requeue what we didn't finish. */ + if (fake.ri_blockcount > 0) { + struct xfs_bmbt_irec irec = { + .br_startblock = fake.ri_startblock, + .br_blockcount = fake.ri_blockcount, + }; + + switch (fake.ri_type) { + case XFS_REFCOUNT_INCREASE: + xfs_refcount_increase_extent(tp, &irec); + break; + case XFS_REFCOUNT_DECREASE: + xfs_refcount_decrease_extent(tp, &irec); + break; + case XFS_REFCOUNT_ALLOC_COW: + xfs_refcount_alloc_cow_extent(tp, + irec.br_startblock, + irec.br_blockcount); + break; + case XFS_REFCOUNT_FREE_COW: + xfs_refcount_free_cow_extent(tp, + irec.br_startblock, + irec.br_blockcount); + break; + default: + ASSERT(0); + } + requeue_only = true; + } + } + + xfs_refcount_finish_one_cleanup(tp, rcur, error); + return xfs_defer_ops_capture_and_commit(tp, capture_list); + +abort_error: + xfs_refcount_finish_one_cleanup(tp, rcur, error); + xfs_trans_cancel(tp); + return error; +} + +STATIC bool +xfs_cui_item_match( + struct xfs_log_item *lip, + uint64_t intent_id) +{ + return CUI_ITEM(lip)->cui_format.cui_id == intent_id; +} + +/* Relog an intent item to push the log tail forward. */ +static struct xfs_log_item * +xfs_cui_item_relog( + struct xfs_log_item *intent, + struct xfs_trans *tp) +{ + struct xfs_cud_log_item *cudp; + struct xfs_cui_log_item *cuip; + struct xfs_phys_extent *pmap; + unsigned int count; + + count = CUI_ITEM(intent)->cui_format.cui_nextents; + pmap = CUI_ITEM(intent)->cui_format.cui_extents; + + tp->t_flags |= XFS_TRANS_DIRTY; + cudp = xfs_trans_get_cud(tp, CUI_ITEM(intent)); + set_bit(XFS_LI_DIRTY, &cudp->cud_item.li_flags); + + cuip = xfs_cui_init(tp->t_mountp, count); + memcpy(cuip->cui_format.cui_extents, pmap, count * sizeof(*pmap)); + atomic_set(&cuip->cui_next_extent, count); + xfs_trans_add_item(tp, &cuip->cui_item); + set_bit(XFS_LI_DIRTY, &cuip->cui_item.li_flags); + return &cuip->cui_item; +} + +static const struct xfs_item_ops xfs_cui_item_ops = { + .flags = XFS_ITEM_INTENT, + .iop_size = xfs_cui_item_size, + .iop_format = xfs_cui_item_format, + .iop_unpin = xfs_cui_item_unpin, + .iop_release = xfs_cui_item_release, + .iop_recover = xfs_cui_item_recover, + .iop_match = xfs_cui_item_match, + .iop_relog = xfs_cui_item_relog, +}; + +static inline void +xfs_cui_copy_format( + struct xfs_cui_log_format *dst, + const struct xfs_cui_log_format *src) +{ + unsigned int i; + + memcpy(dst, src, offsetof(struct xfs_cui_log_format, cui_extents)); + + for (i = 0; i < src->cui_nextents; i++) + memcpy(&dst->cui_extents[i], &src->cui_extents[i], + sizeof(struct xfs_phys_extent)); +} + +/* + * This routine is called to create an in-core extent refcount update + * item from the cui format structure which was logged on disk. + * It allocates an in-core cui, copies the extents from the format + * structure into it, and adds the cui to the AIL with the given + * LSN. + */ +STATIC int +xlog_recover_cui_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_cui_log_item *cuip; + struct xfs_cui_log_format *cui_formatp; + size_t len; + + cui_formatp = item->ri_buf[0].i_addr; + + if (item->ri_buf[0].i_len < xfs_cui_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; + } + + len = xfs_cui_log_format_sizeof(cui_formatp->cui_nextents); + if (item->ri_buf[0].i_len != len) { + XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, + item->ri_buf[0].i_addr, item->ri_buf[0].i_len); + return -EFSCORRUPTED; + } + + cuip = xfs_cui_init(mp, cui_formatp->cui_nextents); + xfs_cui_copy_format(&cuip->cui_format, cui_formatp); + atomic_set(&cuip->cui_next_extent, cui_formatp->cui_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, &cuip->cui_item, lsn); + xfs_cui_release(cuip); + return 0; +} + +const struct xlog_recover_item_ops xlog_cui_item_ops = { + .item_type = XFS_LI_CUI, + .commit_pass2 = xlog_recover_cui_commit_pass2, +}; + +/* + * This routine is called when an CUD format structure is found in a committed + * transaction in the log. Its purpose is to cancel the corresponding CUI if it + * was still in the log. To do this it searches the AIL for the CUI with an id + * equal to that in the CUD format structure. If we find it we drop the CUD + * reference, which removes the CUI from the AIL and frees it. + */ +STATIC int +xlog_recover_cud_commit_pass2( + struct xlog *log, + struct list_head *buffer_list, + struct xlog_recover_item *item, + xfs_lsn_t lsn) +{ + struct xfs_cud_log_format *cud_formatp; + + cud_formatp = item->ri_buf[0].i_addr; + if (item->ri_buf[0].i_len != sizeof(struct xfs_cud_log_format)) { + XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, log->l_mp, + item->ri_buf[0].i_addr, item->ri_buf[0].i_len); + return -EFSCORRUPTED; + } + + xlog_recover_release_intent(log, XFS_LI_CUI, cud_formatp->cud_cui_id); + return 0; +} + +const struct xlog_recover_item_ops xlog_cud_item_ops = { + .item_type = XFS_LI_CUD, + .commit_pass2 = xlog_recover_cud_commit_pass2, +}; -- cgit v1.2.3