diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/xfs/Makefile | 1 | ||||
| -rw-r--r-- | fs/xfs/libxfs/xfs_refcount.h | 14 | ||||
| -rw-r--r-- | fs/xfs/xfs_log_recover.c | 175 | ||||
| -rw-r--r-- | fs/xfs/xfs_refcount_item.c | 60 | ||||
| -rw-r--r-- | fs/xfs/xfs_refcount_item.h | 1 | ||||
| -rw-r--r-- | fs/xfs/xfs_trace.h | 33 | ||||
| -rw-r--r-- | fs/xfs/xfs_trans.h | 11 | ||||
| -rw-r--r-- | fs/xfs/xfs_trans_refcount.c | 80 |
8 files changed, 375 insertions, 0 deletions
diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile index d6429fd13774..6a9ea9ed7efc 100644 --- a/fs/xfs/Makefile +++ b/fs/xfs/Makefile @@ -113,6 +113,7 @@ xfs-y += xfs_log.o \ xfs_trans_buf.o \ xfs_trans_extfree.o \ xfs_trans_inode.o \ + xfs_trans_refcount.o \ xfs_trans_rmap.o \ # optional features diff --git a/fs/xfs/libxfs/xfs_refcount.h b/fs/xfs/libxfs/xfs_refcount.h index 4dc335a1dc73..67b1c13fb714 100644 --- a/fs/xfs/libxfs/xfs_refcount.h +++ b/fs/xfs/libxfs/xfs_refcount.h @@ -27,4 +27,18 @@ extern int xfs_refcount_lookup_ge(struct xfs_btree_cur *cur, extern int xfs_refcount_get_rec(struct xfs_btree_cur *cur, struct xfs_refcount_irec *irec, int *stat); +enum xfs_refcount_intent_type { + XFS_REFCOUNT_INCREASE = 1, + XFS_REFCOUNT_DECREASE, + XFS_REFCOUNT_ALLOC_COW, + XFS_REFCOUNT_FREE_COW, +}; + +struct xfs_refcount_intent { + struct list_head ri_list; + enum xfs_refcount_intent_type ri_type; + xfs_fsblock_t ri_startblock; + xfs_extlen_t ri_blockcount; +}; + #endif /* __XFS_REFCOUNT_H__ */ diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 846483d56949..7def6723b857 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -45,6 +45,7 @@ #include "xfs_dir2.h" #include "xfs_rmap_item.h" #include "xfs_buf_item.h" +#include "xfs_refcount_item.h" #define BLK_AVG(blk1, blk2) ((blk1+blk2) >> 1) @@ -1924,6 +1925,8 @@ xlog_recover_reorder_trans( case XFS_LI_EFI: case XFS_LI_RUI: case XFS_LI_RUD: + case XFS_LI_CUI: + case XFS_LI_CUD: trace_xfs_log_recover_item_reorder_tail(log, trans, item, pass); list_move_tail(&item->ri_list, &inode_list); @@ -3547,6 +3550,123 @@ xlog_recover_rud_pass2( } /* + * Copy an CUI format buffer from the given buf, and into the destination + * CUI format structure. The CUI/CUD items were designed not to need any + * special alignment handling. + */ +static int +xfs_cui_copy_format( + struct xfs_log_iovec *buf, + struct xfs_cui_log_format *dst_cui_fmt) +{ + struct xfs_cui_log_format *src_cui_fmt; + uint len; + + src_cui_fmt = buf->i_addr; + len = xfs_cui_log_format_sizeof(src_cui_fmt->cui_nextents); + + if (buf->i_len == len) { + memcpy(dst_cui_fmt, src_cui_fmt, len); + return 0; + } + return -EFSCORRUPTED; +} + +/* + * 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_pass2( + struct xlog *log, + struct xlog_recover_item *item, + xfs_lsn_t lsn) +{ + int error; + struct xfs_mount *mp = log->l_mp; + struct xfs_cui_log_item *cuip; + struct xfs_cui_log_format *cui_formatp; + + cui_formatp = item->ri_buf[0].i_addr; + + cuip = xfs_cui_init(mp, cui_formatp->cui_nextents); + error = xfs_cui_copy_format(&item->ri_buf[0], &cuip->cui_format); + if (error) { + xfs_cui_item_free(cuip); + return error; + } + atomic_set(&cuip->cui_next_extent, cui_formatp->cui_nextents); + + spin_lock(&log->l_ailp->xa_lock); + /* + * The CUI has two references. One for the CUD and one for CUI to ensure + * it makes it into the AIL. Insert the CUI into the AIL directly and + * drop the CUI reference. Note that xfs_trans_ail_update() drops the + * AIL lock. + */ + xfs_trans_ail_update(log->l_ailp, &cuip->cui_item, lsn); + xfs_cui_release(cuip); + return 0; +} + + +/* + * 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_pass2( + struct xlog *log, + struct xlog_recover_item *item) +{ + struct xfs_cud_log_format *cud_formatp; + struct xfs_cui_log_item *cuip = NULL; + struct xfs_log_item *lip; + __uint64_t cui_id; + struct xfs_ail_cursor cur; + struct xfs_ail *ailp = log->l_ailp; + + cud_formatp = item->ri_buf[0].i_addr; + if (item->ri_buf[0].i_len != sizeof(struct xfs_cud_log_format)) + return -EFSCORRUPTED; + cui_id = cud_formatp->cud_cui_id; + + /* + * Search for the CUI with the id in the CUD format structure in the + * AIL. + */ + spin_lock(&ailp->xa_lock); + lip = xfs_trans_ail_cursor_first(ailp, &cur, 0); + while (lip != NULL) { + if (lip->li_type == XFS_LI_CUI) { + cuip = (struct xfs_cui_log_item *)lip; + if (cuip->cui_format.cui_id == cui_id) { + /* + * Drop the CUD reference to the CUI. This + * removes the CUI from the AIL and frees it. + */ + spin_unlock(&ailp->xa_lock); + xfs_cui_release(cuip); + spin_lock(&ailp->xa_lock); + break; + } + } + lip = xfs_trans_ail_cursor_next(ailp, &cur); + } + + xfs_trans_ail_cursor_done(&cur); + spin_unlock(&ailp->xa_lock); + + return 0; +} + +/* * This routine is called when an inode create format structure is found in a * committed transaction in the log. It's purpose is to initialise the inodes * being allocated on disk. This requires us to get inode cluster buffers that @@ -3773,6 +3893,8 @@ xlog_recover_ra_pass2( case XFS_LI_QUOTAOFF: case XFS_LI_RUI: case XFS_LI_RUD: + case XFS_LI_CUI: + case XFS_LI_CUD: default: break; } @@ -3798,6 +3920,8 @@ xlog_recover_commit_pass1( case XFS_LI_ICREATE: case XFS_LI_RUI: case XFS_LI_RUD: + case XFS_LI_CUI: + case XFS_LI_CUD: /* nothing to do in pass 1 */ return 0; default: @@ -3832,6 +3956,10 @@ xlog_recover_commit_pass2( return xlog_recover_rui_pass2(log, item, trans->r_lsn); case XFS_LI_RUD: return xlog_recover_rud_pass2(log, item); + case XFS_LI_CUI: + return xlog_recover_cui_pass2(log, item, trans->r_lsn); + case XFS_LI_CUD: + return xlog_recover_cud_pass2(log, item); case XFS_LI_DQUOT: return xlog_recover_dquot_pass2(log, buffer_list, item, trans->r_lsn); @@ -4419,12 +4547,53 @@ xlog_recover_cancel_rui( spin_lock(&ailp->xa_lock); } +/* Recover the CUI if necessary. */ +STATIC int +xlog_recover_process_cui( + struct xfs_mount *mp, + struct xfs_ail *ailp, + struct xfs_log_item *lip) +{ + struct xfs_cui_log_item *cuip; + int error; + + /* + * Skip CUIs that we've already processed. + */ + cuip = container_of(lip, struct xfs_cui_log_item, cui_item); + if (test_bit(XFS_CUI_RECOVERED, &cuip->cui_flags)) + return 0; + + spin_unlock(&ailp->xa_lock); + error = xfs_cui_recover(mp, cuip); + spin_lock(&ailp->xa_lock); + + return error; +} + +/* Release the CUI since we're cancelling everything. */ +STATIC void +xlog_recover_cancel_cui( + struct xfs_mount *mp, + struct xfs_ail *ailp, + struct xfs_log_item *lip) +{ + struct xfs_cui_log_item *cuip; + + cuip = container_of(lip, struct xfs_cui_log_item, cui_item); + + spin_unlock(&ailp->xa_lock); + xfs_cui_release(cuip); + spin_lock(&ailp->xa_lock); +} + /* Is this log item a deferred action intent? */ static inline bool xlog_item_is_intent(struct xfs_log_item *lip) { switch (lip->li_type) { case XFS_LI_EFI: case XFS_LI_RUI: + case XFS_LI_CUI: return true; default: return false; @@ -4488,6 +4657,9 @@ xlog_recover_process_intents( case XFS_LI_RUI: error = xlog_recover_process_rui(log->l_mp, ailp, lip); break; + case XFS_LI_CUI: + error = xlog_recover_process_cui(log->l_mp, ailp, lip); + break; } if (error) goto out; @@ -4535,6 +4707,9 @@ xlog_recover_cancel_intents( case XFS_LI_RUI: xlog_recover_cancel_rui(log->l_mp, ailp, lip); break; + case XFS_LI_CUI: + xlog_recover_cancel_cui(log->l_mp, ailp, lip); + break; } lip = xfs_trans_ail_cursor_next(ailp, &cur); diff --git a/fs/xfs/xfs_refcount_item.c b/fs/xfs/xfs_refcount_item.c index f9ad05529eba..599a8d2271f9 100644 --- a/fs/xfs/xfs_refcount_item.c +++ b/fs/xfs/xfs_refcount_item.c @@ -22,12 +22,15 @@ #include "xfs_format.h" #include "xfs_log_format.h" #include "xfs_trans_resv.h" +#include "xfs_bit.h" #include "xfs_mount.h" +#include "xfs_defer.h" #include "xfs_trans.h" #include "xfs_trans_priv.h" #include "xfs_buf_item.h" #include "xfs_refcount_item.h" #include "xfs_log.h" +#include "xfs_refcount.h" kmem_zone_t *xfs_cui_zone; @@ -381,3 +384,60 @@ xfs_cud_init( return cudp; } + +/* + * Process a refcount update intent item that was recovered from the log. + * We need to update the refcountbt. + */ +int +xfs_cui_recover( + struct xfs_mount *mp, + struct xfs_cui_log_item *cuip) +{ + int i; + int error = 0; + struct xfs_phys_extent *refc; + xfs_fsblock_t startblock_fsb; + bool op_ok; + + ASSERT(!test_bit(XFS_CUI_RECOVERED, &cuip->cui_flags)); + + /* + * 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++) { + refc = &cuip->cui_format.cui_extents[i]; + startblock_fsb = XFS_BB_TO_FSB(mp, + XFS_FSB_TO_DADDR(mp, refc->pe_startblock)); + switch (refc->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: + op_ok = true; + break; + default: + op_ok = false; + break; + } + if (!op_ok || startblock_fsb == 0 || + refc->pe_len == 0 || + startblock_fsb >= mp->m_sb.sb_dblocks || + refc->pe_len >= mp->m_sb.sb_agblocks || + (refc->pe_flags & ~XFS_REFCOUNT_EXTENT_FLAGS)) { + /* + * This will pull the CUI from the AIL and + * free the memory associated with it. + */ + set_bit(XFS_CUI_RECOVERED, &cuip->cui_flags); + xfs_cui_release(cuip); + return -EIO; + } + } + + set_bit(XFS_CUI_RECOVERED, &cuip->cui_flags); + xfs_cui_release(cuip); + return error; +} diff --git a/fs/xfs/xfs_refcount_item.h b/fs/xfs/xfs_refcount_item.h index 34b6f7a8c149..5b74dddfa64b 100644 --- a/fs/xfs/xfs_refcount_item.h +++ b/fs/xfs/xfs_refcount_item.h @@ -96,5 +96,6 @@ struct xfs_cud_log_item *xfs_cud_init(struct xfs_mount *, struct xfs_cui_log_item *); void xfs_cui_item_free(struct xfs_cui_log_item *); void xfs_cui_release(struct xfs_cui_log_item *); +int xfs_cui_recover(struct xfs_mount *mp, struct xfs_cui_log_item *cuip); #endif /* __XFS_REFCOUNT_ITEM_H__ */ diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index c7b9853c7ae9..e306e83539db 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -2932,6 +2932,39 @@ DEFINE_AG_EXTENT_EVENT(xfs_refcount_find_shared); DEFINE_AG_EXTENT_EVENT(xfs_refcount_find_shared_result); DEFINE_AG_ERROR_EVENT(xfs_refcount_find_shared_error); +TRACE_EVENT(xfs_refcount_finish_one_leftover, + TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, + int type, xfs_agblock_t agbno, xfs_extlen_t len, + xfs_agblock_t new_agbno, xfs_extlen_t new_len), + TP_ARGS(mp, agno, type, agbno, len, new_agbno, new_len), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_agnumber_t, agno) + __field(int, type) + __field(xfs_agblock_t, agbno) + __field(xfs_extlen_t, len) + __field(xfs_agblock_t, new_agbno) + __field(xfs_extlen_t, new_len) + ), + TP_fast_assign( + __entry->dev = mp->m_super->s_dev; + __entry->agno = agno; + __entry->type = type; + __entry->agbno = agbno; + __entry->len = len; + __entry->new_agbno = new_agbno; + __entry->new_len = new_len; + ), + TP_printk("dev %d:%d type %d agno %u agbno %u len %u new_agbno %u new_len %u", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->type, + __entry->agno, + __entry->agbno, + __entry->len, + __entry->new_agbno, + __entry->new_len) +); + #endif /* _TRACE_XFS_H */ #undef TRACE_INCLUDE_PATH diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h index e2bf86aad33d..fe69e2048978 100644 --- a/fs/xfs/xfs_trans.h +++ b/fs/xfs/xfs_trans.h @@ -36,6 +36,7 @@ struct xfs_busy_extent; struct xfs_rud_log_item; struct xfs_rui_log_item; struct xfs_btree_cur; +struct xfs_cui_log_item; typedef struct xfs_log_item { struct list_head li_ail; /* AIL pointers */ @@ -248,4 +249,14 @@ int xfs_trans_log_finish_rmap_update(struct xfs_trans *tp, xfs_fsblock_t startblock, xfs_filblks_t blockcount, xfs_exntst_t state, struct xfs_btree_cur **pcur); +/* refcount updates */ +enum xfs_refcount_intent_type; + +struct xfs_cud_log_item *xfs_trans_get_cud(struct xfs_trans *tp, + struct xfs_cui_log_item *cuip); +int xfs_trans_log_finish_refcount_update(struct xfs_trans *tp, + struct xfs_cud_log_item *cudp, + enum xfs_refcount_intent_type type, xfs_fsblock_t startblock, + xfs_extlen_t blockcount, struct xfs_btree_cur **pcur); + #endif /* __XFS_TRANS_H__ */ diff --git a/fs/xfs/xfs_trans_refcount.c b/fs/xfs/xfs_trans_refcount.c new file mode 100644 index 000000000000..b18d548c1aae --- /dev/null +++ b/fs/xfs/xfs_trans_refcount.c @@ -0,0 +1,80 @@ +/* + * Copyright (C) 2016 Oracle. All Rights Reserved. + * + * Author: Darrick J. Wong <darrick.wong@oracle.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_shared.h" +#include "xfs_format.h" +#include "xfs_log_format.h" +#include "xfs_trans_resv.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_alloc.h" +#include "xfs_refcount.h" + +/* + * This routine is called to allocate a "refcount update done" + * log item. + */ +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 = xfs_cud_init(tp->t_mountp, cuip); + 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. + */ +int +xfs_trans_log_finish_refcount_update( + struct xfs_trans *tp, + struct xfs_cud_log_item *cudp, + enum xfs_refcount_intent_type type, + xfs_fsblock_t startblock, + xfs_extlen_t blockcount, + struct xfs_btree_cur **pcur) +{ + int error; + + /* XXX: leave this empty for now */ + error = -EFSCORRUPTED; + + /* + * 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; + cudp->cud_item.li_desc->lid_flags |= XFS_LID_DIRTY; + + return error; +} |