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Merge branch 'xfs-efi-rework' into for-next

This commit is contained in:
Dave Chinner 2015-08-19 10:10:47 +10:00
parent 5461ad99ca d4a97a0422
commit 5be203ad11
21 changed files with 423 additions and 237 deletions
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1
fs/xfs/libxfs/xfs_bmap.c
View File

@ -5945,6 +5945,7 @@ xfs_bmap_split_extent(
return xfs_trans_commit(tp);
out:
xfs_bmap_cancel(&free_list);
xfs_trans_cancel(tp);
return error;
}

2
fs/xfs/libxfs/xfs_ialloc.c
View File

@ -2233,7 +2233,7 @@ xfs_imap_lookup(
}
xfs_trans_brelse(tp, agbp);
xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
xfs_btree_del_cursor(cur, error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR);
if (error)
return error;

89
fs/xfs/xfs_bmap_util.c
View File

@ -67,16 +67,15 @@ xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb)
*/
int /* error */
xfs_bmap_finish(
xfs_trans_t **tp, /* transaction pointer addr */
xfs_bmap_free_t *flist, /* i/o: list extents to free */
int *committed) /* xact committed or not */
struct xfs_trans **tp, /* transaction pointer addr */
struct xfs_bmap_free *flist, /* i/o: list extents to free */
int *committed)/* xact committed or not */
{
xfs_efd_log_item_t *efd; /* extent free data */
xfs_efi_log_item_t *efi; /* extent free intention */
int error; /* error return value */
xfs_bmap_free_item_t *free; /* free extent item */
xfs_mount_t *mp; /* filesystem mount structure */
xfs_bmap_free_item_t *next; /* next item on free list */
struct xfs_efd_log_item *efd; /* extent free data */
struct xfs_efi_log_item *efi; /* extent free intention */
int error; /* error return value */
struct xfs_bmap_free_item *free; /* free extent item */
struct xfs_bmap_free_item *next; /* next item on free list */
ASSERT((*tp)->t_flags & XFS_TRANS_PERM_LOG_RES);
if (flist->xbf_count == 0) {
@ -88,40 +87,48 @@ xfs_bmap_finish(
xfs_trans_log_efi_extent(*tp, efi, free->xbfi_startblock,
free->xbfi_blockcount);
error = xfs_trans_roll(tp, NULL);
*committed = 1;
/*
* We have a new transaction, so we should return committed=1,
* even though we're returning an error.
*/
if (error)
return error;
error = __xfs_trans_roll(tp, NULL, committed);
if (error) {
/*
* If the transaction was committed, drop the EFD reference
* since we're bailing out of here. The other reference is
* dropped when the EFI hits the AIL.
*
* If the transaction was not committed, the EFI is freed by the
* EFI item unlock handler on abort. Also, we have a new
* transaction so we should return committed=1 even though we're
* returning an error.
*/
if (*committed) {
xfs_efi_release(efi);
xfs_force_shutdown((*tp)->t_mountp,
(error == -EFSCORRUPTED) ?
SHUTDOWN_CORRUPT_INCORE :
SHUTDOWN_META_IO_ERROR);
} else {
*committed = 1;
}
return error;
}
/*
* Get an EFD and free each extent in the list, logging to the EFD in
* the process. The remaining bmap free list is cleaned up by the caller
* on error.
*/
efd = xfs_trans_get_efd(*tp, efi, flist->xbf_count);
for (free = flist->xbf_first; free != NULL; free = next) {
next = free->xbfi_next;
if ((error = xfs_free_extent(*tp, free->xbfi_startblock,
free->xbfi_blockcount))) {
/*
* The bmap free list will be cleaned up at a
* higher level. The EFI will be canceled when
* this transaction is aborted.
* Need to force shutdown here to make sure it
* happens, since this transaction may not be
* dirty yet.
*/
mp = (*tp)->t_mountp;
if (!XFS_FORCED_SHUTDOWN(mp))
xfs_force_shutdown(mp,
(error == -EFSCORRUPTED) ?
SHUTDOWN_CORRUPT_INCORE :
SHUTDOWN_META_IO_ERROR);
error = xfs_trans_free_extent(*tp, efd, free->xbfi_startblock,
free->xbfi_blockcount);
if (error)
return error;
}
xfs_trans_log_efd_extent(*tp, efd, free->xbfi_startblock,
free->xbfi_blockcount);
xfs_bmap_del_free(flist, NULL, free);
}
return 0;
}
@ -1467,7 +1474,7 @@ xfs_shift_file_space(
XFS_DIOSTRAT_SPACE_RES(mp, 0), 0,
XFS_QMOPT_RES_REGBLKS);
if (error)
goto out;
goto out_trans_cancel;
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
@ -1481,18 +1488,20 @@ xfs_shift_file_space(
&done, stop_fsb, &first_block, &free_list,
direction, XFS_BMAP_MAX_SHIFT_EXTENTS);
if (error)
goto out;
goto out_bmap_cancel;
error = xfs_bmap_finish(&tp, &free_list, &committed);
if (error)
goto out;
goto out_bmap_cancel;
error = xfs_trans_commit(tp);
}
return error;
out:
out_bmap_cancel:
xfs_bmap_cancel(&free_list);
out_trans_cancel:
xfs_trans_cancel(tp);
return error;
}

6
fs/xfs/xfs_buf_item.c
View File

@ -647,11 +647,7 @@ xfs_buf_item_unlock(
xfs_buf_item_relse(bp);
else if (aborted) {
ASSERT(XFS_FORCED_SHUTDOWN(lip->li_mountp));
if (lip->li_flags & XFS_LI_IN_AIL) {
spin_lock(&lip->li_ailp->xa_lock);
xfs_trans_ail_delete(lip->li_ailp, lip,
SHUTDOWN_LOG_IO_ERROR);
}
xfs_trans_ail_remove(lip, SHUTDOWN_LOG_IO_ERROR);
xfs_buf_item_relse(bp);
}
}

8
fs/xfs/xfs_dquot.c
View File

@ -954,12 +954,8 @@ xfs_qm_dqflush(
struct xfs_log_item *lip = &dqp->q_logitem.qli_item;
dqp->dq_flags &= ~XFS_DQ_DIRTY;
spin_lock(&mp->m_ail->xa_lock);
if (lip->li_flags & XFS_LI_IN_AIL)
xfs_trans_ail_delete(mp->m_ail, lip,
SHUTDOWN_CORRUPT_INCORE);
else
spin_unlock(&mp->m_ail->xa_lock);
xfs_trans_ail_remove(lip, SHUTDOWN_CORRUPT_INCORE);
error = -EIO;
goto out_unlock;
}

105
fs/xfs/xfs_extfree_item.c
View File

@ -46,28 +46,6 @@ xfs_efi_item_free(
kmem_zone_free(xfs_efi_zone, 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)
{
struct xfs_ail *ailp = efip->efi_item.li_ailp;
if (atomic_dec_and_test(&efip->efi_refcount)) {
spin_lock(&ailp->xa_lock);
/* xfs_trans_ail_delete() drops the AIL lock. */
xfs_trans_ail_delete(ailp, &efip->efi_item,
SHUTDOWN_LOG_IO_ERROR);
xfs_efi_item_free(efip);
}
}
/*
* This returns the number of iovecs needed to log the given efi item.
* We only need 1 iovec for an efi item. It just logs the efi_log_format
@ -128,12 +106,12 @@ xfs_efi_item_pin(
}
/*
* While EFIs cannot really be pinned, the unpin operation is the last place at
* which the EFI is manipulated during a transaction. If we are being asked to
* remove the EFI it's because the transaction has been cancelled and by
* definition that means the EFI cannot be in the AIL so remove it from the
* transaction and free it. Otherwise coordinate with xfs_efi_release()
* to determine who gets to free the EFI.
* 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(
@ -141,15 +119,7 @@ xfs_efi_item_unpin(
int remove)
{
struct xfs_efi_log_item *efip = EFI_ITEM(lip);
if (remove) {
ASSERT(!(lip->li_flags & XFS_LI_IN_AIL));
if (lip->li_desc)
xfs_trans_del_item(lip);
xfs_efi_item_free(efip);
return;
}
__xfs_efi_release(efip);
xfs_efi_release(efip);
}
/*
@ -167,6 +137,11 @@ xfs_efi_item_push(
return XFS_ITEM_PINNED;
}
/*
* 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_unlock(
struct xfs_log_item *lip)
@ -301,23 +276,19 @@ xfs_efi_copy_format(xfs_log_iovec_t *buf, xfs_efi_log_format_t *dst_efi_fmt)
}
/*
* This is called by the efd item code below to release references to the given
* efi item. Each efd calls this with the number of extents that it has
* logged, and when the sum of these reaches the total number of extents logged
* by this efi item we can free the efi item.
* 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.
*/
void
xfs_efi_release(xfs_efi_log_item_t *efip,
uint nextents)
xfs_efi_release(
struct xfs_efi_log_item *efip)
{
ASSERT(atomic_read(&efip->efi_next_extent) >= nextents);
if (atomic_sub_and_test(nextents, &efip->efi_next_extent)) {
/* recovery needs us to drop the EFI reference, too */
if (test_bit(XFS_EFI_RECOVERED, &efip->efi_flags))
__xfs_efi_release(efip);
__xfs_efi_release(efip);
/* efip may now have been freed, do not reference it again. */
if (atomic_dec_and_test(&efip->efi_refcount)) {
xfs_trans_ail_remove(&efip->efi_item, SHUTDOWN_LOG_IO_ERROR);
xfs_efi_item_free(efip);
}
}
@ -415,20 +386,27 @@ xfs_efd_item_push(
return XFS_ITEM_PINNED;
}
/*
* 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_unlock(
struct xfs_log_item *lip)
{
if (lip->li_flags & XFS_LI_ABORTED)
xfs_efd_item_free(EFD_ITEM(lip));
struct xfs_efd_log_item *efdp = EFD_ITEM(lip);
if (lip->li_flags & XFS_LI_ABORTED) {
xfs_efi_release(efdp->efd_efip);
xfs_efd_item_free(efdp);
}
}
/*
* When the efd item is committed to disk, all we need to do
* is delete our reference to our partner efi item and then
* free ourselves. Since we're freeing ourselves we must
* return -1 to keep the transaction code from further referencing
* this item.
* When the efd item is committed to disk, all we need to do is delete our
* reference to our partner efi item and then free ourselves. Since we're
* freeing ourselves we must return -1 to keep the transaction code from further
* referencing this item.
*/
STATIC xfs_lsn_t
xfs_efd_item_committed(
@ -438,13 +416,14 @@ xfs_efd_item_committed(
struct xfs_efd_log_item *efdp = EFD_ITEM(lip);
/*
* If we got a log I/O error, it's always the case that the LR with the
* EFI got unpinned and freed before the EFD got aborted.
* Drop the EFI reference regardless of whether the EFD has been
* aborted. Once the EFD transaction is constructed, it is the sole
* responsibility of the EFD to release the EFI (even if the EFI is
* aborted due to log I/O error).
*/
if (!(lip->li_flags & XFS_LI_ABORTED))
xfs_efi_release(efdp->efd_efip, efdp->efd_format.efd_nextents);
xfs_efi_release(efdp->efd_efip);
xfs_efd_item_free(efdp);
return (xfs_lsn_t)-1;
}

26
fs/xfs/xfs_extfree_item.h
View File

@ -39,9 +39,28 @@ struct kmem_zone;
* "extent free done" log item described below.
*
* The EFI is reference counted so that it is not freed prior to both the EFI
* and EFD being committed and unpinned. This ensures that when the last
* reference goes away the EFI will always be in the AIL as it has been
* unpinned, regardless of whether the EFD is processed before or after the EFI.
* and EFD being committed and unpinned. This ensures the EFI is inserted into
* the AIL even in the event of out of order EFI/EFD processing. In other words,
* an EFI is born with two references:
*
* 1.) an EFI held reference to track EFI AIL insertion
* 2.) an EFD held reference to track EFD commit
*
* On allocation, both references are the responsibility of the caller. Once the
* EFI is added to and dirtied in a transaction, ownership of reference one
* transfers to the transaction. The reference is dropped once the EFI is
* inserted to the AIL or in the event of failure along the way (e.g., commit
* failure, log I/O error, etc.). Note that the caller remains responsible for
* the EFD reference under all circumstances to this point. The caller has no
* means to detect failure once the transaction is committed, however.
* Therefore, an EFD is required after this point, even in the event of
* unrelated failure.
*
* Once an EFD is allocated and dirtied in a transaction, reference two
* transfers to the transaction. The EFD reference is dropped once it reaches
* the unpin handler. Similar to the EFI, the reference also drops in the event
* of commit failure or log I/O errors. Note that the EFD is not inserted in the
* AIL, so at this point both the EFI and EFD are freed.
*/
typedef struct xfs_efi_log_item {
xfs_log_item_t efi_item;
@ -77,5 +96,6 @@ xfs_efd_log_item_t *xfs_efd_init(struct xfs_mount *, xfs_efi_log_item_t *,
int xfs_efi_copy_format(xfs_log_iovec_t *buf,
xfs_efi_log_format_t *dst_efi_fmt);
void xfs_efi_item_free(xfs_efi_log_item_t *);
void xfs_efi_release(struct xfs_efi_log_item *);
#endif /* __XFS_EXTFREE_ITEM_H__ */

9
fs/xfs/xfs_inode.c
View File

@ -1785,14 +1785,15 @@ xfs_inactive_ifree(
xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_ICOUNT, -1);
/*
* Just ignore errors at this point. There is nothing we can
* do except to try to keep going. Make sure it's not a silent
* error.
* Just ignore errors at this point. There is nothing we can do except
* to try to keep going. Make sure it's not a silent error.
*/
error = xfs_bmap_finish(&tp, &free_list, &committed);
if (error)
if (error) {
xfs_notice(mp, "%s: xfs_bmap_finish returned error %d",
__func__, error);
xfs_bmap_cancel(&free_list);
}
error = xfs_trans_commit(tp);
if (error)
xfs_notice(mp, "%s: xfs_trans_commit returned error %d",

11
fs/xfs/xfs_inode_item.c
View File

@ -703,17 +703,10 @@ xfs_iflush_abort(
xfs_inode_log_item_t *iip = ip->i_itemp;
if (iip) {
struct xfs_ail *ailp = iip->ili_item.li_ailp;
if (iip->ili_item.li_flags & XFS_LI_IN_AIL) {
spin_lock(&ailp->xa_lock);
if (iip->ili_item.li_flags & XFS_LI_IN_AIL) {
/* xfs_trans_ail_delete() drops the AIL lock. */
xfs_trans_ail_delete(ailp, &iip->ili_item,
stale ?
SHUTDOWN_LOG_IO_ERROR :
xfs_trans_ail_remove(&iip->ili_item,
stale ? SHUTDOWN_LOG_IO_ERROR :
SHUTDOWN_CORRUPT_INCORE);
} else
spin_unlock(&ailp->xa_lock);
}
iip->ili_logged = 0;
/*

3
fs/xfs/xfs_itable.c
View File

@ -473,7 +473,8 @@ xfs_bulkstat(
* pending error, then we are done.
*/
del_cursor:
xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
xfs_btree_del_cursor(cur, error ?
XFS_BTREE_ERROR : XFS_BTREE_NOERROR);
xfs_buf_relse(agbp);
if (error)
break;

37
fs/xfs/xfs_log.c
View File

@ -700,6 +700,7 @@ xfs_log_mount(
if (error) {
xfs_warn(mp, "log mount/recovery failed: error %d",
error);
xlog_recover_cancel(mp->m_log);
goto out_destroy_ail;
}
}
@ -740,18 +741,35 @@ out:
* it.
*/
int
xfs_log_mount_finish(xfs_mount_t *mp)
xfs_log_mount_finish(
struct xfs_mount *mp)
{
int error = 0;
if (!(mp->m_flags & XFS_MOUNT_NORECOVERY)) {
error = xlog_recover_finish(mp->m_log);
if (!error)
xfs_log_work_queue(mp);
} else {
if (mp->m_flags & XFS_MOUNT_NORECOVERY) {
ASSERT(mp->m_flags & XFS_MOUNT_RDONLY);
return 0;
}
error = xlog_recover_finish(mp->m_log);
if (!error)
xfs_log_work_queue(mp);
return error;
}
/*
* The mount has failed. Cancel the recovery if it hasn't completed and destroy
* the log.
*/
int
xfs_log_mount_cancel(
struct xfs_mount *mp)
{
int error;
error = xlog_recover_cancel(mp->m_log);
xfs_log_unmount(mp);
return error;
}
@ -1654,8 +1672,13 @@ xlog_cksum(
if (xfs_sb_version_haslogv2(&log->l_mp->m_sb)) {
union xlog_in_core2 *xhdr = (union xlog_in_core2 *)rhead;
int i;
int xheads;
for (i = 1; i < log->l_iclog_heads; i++) {
xheads = size / XLOG_HEADER_CYCLE_SIZE;
if (size % XLOG_HEADER_CYCLE_SIZE)
xheads++;
for (i = 1; i < xheads; i++) {
crc = crc32c(crc, &xhdr[i].hic_xheader,
sizeof(struct xlog_rec_ext_header));
}

1
fs/xfs/xfs_log.h
View File

@ -147,6 +147,7 @@ int xfs_log_mount(struct xfs_mount *mp,
xfs_daddr_t start_block,
int num_bblocks);
int xfs_log_mount_finish(struct xfs_mount *mp);
int xfs_log_mount_cancel(struct xfs_mount *);
xfs_lsn_t xlog_assign_tail_lsn(struct xfs_mount *mp);
xfs_lsn_t xlog_assign_tail_lsn_locked(struct xfs_mount *mp);
void xfs_log_space_wake(struct xfs_mount *mp);

2
fs/xfs/xfs_log_priv.h
View File

@ -426,6 +426,8 @@ xlog_recover(
extern int
xlog_recover_finish(
struct xlog *log);
extern int
xlog_recover_cancel(struct xlog *);
extern __le32 xlog_cksum(struct xlog *log, struct xlog_rec_header *rhead,
char *dp, int size);

170
fs/xfs/xfs_log_recover.c
View File

@ -2933,16 +2933,16 @@ xlog_recover_efi_pass2(
struct xlog_recover_item *item,
xfs_lsn_t lsn)
{
int error;
xfs_mount_t *mp = log->l_mp;
xfs_efi_log_item_t *efip;
xfs_efi_log_format_t *efi_formatp;
int error;
struct xfs_mount *mp = log->l_mp;
struct xfs_efi_log_item *efip;
struct xfs_efi_log_format *efi_formatp;
efi_formatp = item->ri_buf[0].i_addr;
efip = xfs_efi_init(mp, efi_formatp->efi_nextents);
if ((error = xfs_efi_copy_format(&(item->ri_buf[0]),
&(efip->efi_format)))) {
error = xfs_efi_copy_format(&item->ri_buf[0], &efip->efi_format);
if (error) {
xfs_efi_item_free(efip);
return error;
}
@ -2950,20 +2950,23 @@ xlog_recover_efi_pass2(
spin_lock(&log->l_ailp->xa_lock);
/*
* xfs_trans_ail_update() drops the AIL lock.
* The EFI has two references. One for the EFD and one for EFI to ensure
* it makes it into the AIL. Insert the EFI into the AIL directly and
* drop the EFI reference. Note that xfs_trans_ail_update() drops the
* AIL lock.
*/
xfs_trans_ail_update(log->l_ailp, &efip->efi_item, lsn);
xfs_efi_release(efip);
return 0;
}
/*
* This routine is called when an efd format structure is found in
* a committed transaction in the log. It's 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 remove the efi from the
* AIL and free it.
* 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_pass2(
@ -2985,8 +2988,8 @@ xlog_recover_efd_pass2(
efi_id = efd_formatp->efd_efi_id;
/*
* Search for the efi with the id in the efd format structure
* in the AIL.
* Search for the EFI with the id in the EFD format structure in the
* AIL.
*/
spin_lock(&ailp->xa_lock);
lip = xfs_trans_ail_cursor_first(ailp, &cur, 0);
@ -2995,18 +2998,18 @@ xlog_recover_efd_pass2(
efip = (xfs_efi_log_item_t *)lip;
if (efip->efi_format.efi_id == efi_id) {
/*
* xfs_trans_ail_delete() drops the
* AIL lock.
* Drop the EFD reference to the EFI. This
* removes the EFI from the AIL and frees it.
*/
xfs_trans_ail_delete(ailp, lip,
SHUTDOWN_CORRUPT_INCORE);
xfs_efi_item_free(efip);
spin_unlock(&ailp->xa_lock);
xfs_efi_release(efip);
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);
@ -3034,6 +3037,11 @@ xlog_recover_do_icreate_pass2(
unsigned int count;
unsigned int isize;
xfs_agblock_t length;
int blks_per_cluster;
int bb_per_cluster;
int cancel_count;
int nbufs;
int i;
icl = (struct xfs_icreate_log *)item->ri_buf[0].i_addr;
if (icl->icl_type != XFS_LI_ICREATE) {
@ -3092,22 +3100,45 @@ xlog_recover_do_icreate_pass2(
}
/*
* Inode buffers can be freed. Do not replay the inode initialisation as
* we could be overwriting something written after this inode buffer was
* cancelled.
*
* XXX: we need to iterate all buffers and only init those that are not
* cancelled. I think that a more fine grained factoring of
* xfs_ialloc_inode_init may be appropriate here to enable this to be
* done easily.
* The icreate transaction can cover multiple cluster buffers and these
* buffers could have been freed and reused. Check the individual
* buffers for cancellation so we don't overwrite anything written after
* a cancellation.
*/
if (xlog_check_buffer_cancelled(log,
XFS_AGB_TO_DADDR(mp, agno, agbno), length, 0))
return 0;
blks_per_cluster = xfs_icluster_size_fsb(mp);
bb_per_cluster = XFS_FSB_TO_BB(mp, blks_per_cluster);
nbufs = length / blks_per_cluster;
for (i = 0, cancel_count = 0; i < nbufs; i++) {
xfs_daddr_t daddr;
xfs_ialloc_inode_init(mp, NULL, buffer_list, count, agno, agbno, length,
be32_to_cpu(icl->icl_gen));
return 0;
daddr = XFS_AGB_TO_DADDR(mp, agno,
agbno + i * blks_per_cluster);
if (xlog_check_buffer_cancelled(log, daddr, bb_per_cluster, 0))
cancel_count++;
}
/*
* We currently only use icreate for a single allocation at a time. This
* means we should expect either all or none of the buffers to be
* cancelled. Be conservative and skip replay if at least one buffer is
* cancelled, but warn the user that something is awry if the buffers
* are not consistent.
*
* XXX: This must be refined to only skip cancelled clusters once we use
* icreate for multiple chunk allocations.
*/
ASSERT(!cancel_count || cancel_count == nbufs);
if (cancel_count) {
if (cancel_count != nbufs)
xfs_warn(mp,
"WARNING: partial inode chunk cancellation, skipped icreate.");
trace_xfs_log_recover_icreate_cancel(log, icl);
return 0;
}
trace_xfs_log_recover_icreate_recover(log, icl);
return xfs_ialloc_inode_init(mp, NULL, buffer_list, count, agno, agbno,
length, be32_to_cpu(icl->icl_gen));
}
STATIC void
@ -3766,7 +3797,7 @@ xlog_recover_process_efi(
* free the memory associated with it.
*/
set_bit(XFS_EFI_RECOVERED, &efip->efi_flags);
xfs_efi_release(efip, efip->efi_format.efi_nextents);
xfs_efi_release(efip);
return -EIO;
}
}
@ -3779,11 +3810,11 @@ xlog_recover_process_efi(
for (i = 0; i < efip->efi_format.efi_nextents; i++) {
extp = &(efip->efi_format.efi_extents[i]);
error = xfs_free_extent(tp, extp->ext_start, extp->ext_len);
error = xfs_trans_free_extent(tp, efdp, extp->ext_start,
extp->ext_len);
if (error)
goto abort_error;
xfs_trans_log_efd_extent(tp, efdp, extp->ext_start,
extp->ext_len);
}
set_bit(XFS_EFI_RECOVERED, &efip->efi_flags);
@ -3815,10 +3846,10 @@ abort_error:
*/
STATIC int
xlog_recover_process_efis(
struct xlog *log)
struct xlog *log)
{
xfs_log_item_t *lip;
xfs_efi_log_item_t *efip;
struct xfs_log_item *lip;
struct xfs_efi_log_item *efip;
int error = 0;
struct xfs_ail_cursor cur;
struct xfs_ail *ailp;
@ -3842,7 +3873,7 @@ xlog_recover_process_efis(
/*
* Skip EFIs that we've already processed.
*/
efip = (xfs_efi_log_item_t *)lip;
efip = container_of(lip, struct xfs_efi_log_item, efi_item);
if (test_bit(XFS_EFI_RECOVERED, &efip->efi_flags)) {
lip = xfs_trans_ail_cursor_next(ailp, &cur);
continue;
@ -3861,6 +3892,50 @@ out:
return error;
}
/*
* A cancel occurs when the mount has failed and we're bailing out. Release all
* pending EFIs so they don't pin the AIL.
*/
STATIC int
xlog_recover_cancel_efis(
struct xlog *log)
{
struct xfs_log_item *lip;
struct xfs_efi_log_item *efip;
int error = 0;
struct xfs_ail_cursor cur;
struct xfs_ail *ailp;
ailp = log->l_ailp;
spin_lock(&ailp->xa_lock);
lip = xfs_trans_ail_cursor_first(ailp, &cur, 0);
while (lip != NULL) {
/*
* We're done when we see something other than an EFI.
* There should be no EFIs left in the AIL now.
*/
if (lip->li_type != XFS_LI_EFI) {
#ifdef DEBUG
for (; lip; lip = xfs_trans_ail_cursor_next(ailp, &cur))
ASSERT(lip->li_type != XFS_LI_EFI);
#endif
break;
}
efip = container_of(lip, struct xfs_efi_log_item, efi_item);
spin_unlock(&ailp->xa_lock);
xfs_efi_release(efip);
spin_lock(&ailp->xa_lock);
lip = xfs_trans_ail_cursor_next(ailp, &cur);
}
xfs_trans_ail_cursor_done(&cur);
spin_unlock(&ailp->xa_lock);
return error;
}
/*
* This routine performs a transaction to null out a bad inode pointer
* in an agi unlinked inode hash bucket.
@ -4636,6 +4711,17 @@ xlog_recover_finish(
return 0;
}
int
xlog_recover_cancel(
struct xlog *log)
{
int error = 0;
if (log->l_flags & XLOG_RECOVERY_NEEDED)
error = xlog_recover_cancel_efis(log);
return error;
}
#if defined(DEBUG)
/*

28
fs/xfs/xfs_mount.c
View File

@ -615,14 +615,14 @@ xfs_default_resblks(xfs_mount_t *mp)
*/
int
xfs_mountfs(
xfs_mount_t *mp)
struct xfs_mount *mp)
{
xfs_sb_t *sbp = &(mp->m_sb);
xfs_inode_t *rip;
__uint64_t resblks;
uint quotamount = 0;
uint quotaflags = 0;
int error = 0;
struct xfs_sb *sbp = &(mp->m_sb);
struct xfs_inode *rip;
__uint64_t resblks;
uint quotamount = 0;
uint quotaflags = 0;
int error = 0;
xfs_sb_mount_common(mp, sbp);
@ -799,7 +799,9 @@ xfs_mountfs(
}
/*
* log's mount-time initialization. Perform 1st part recovery if needed
* Log's mount-time initialization. The first part of recovery can place
* some items on the AIL, to be handled when recovery is finished or
* cancelled.
*/
error = xfs_log_mount(mp, mp->m_logdev_targp,
XFS_FSB_TO_DADDR(mp, sbp->sb_logstart),
@ -910,9 +912,9 @@ xfs_mountfs(
}
/*
* Finish recovering the file system. This part needed to be
* delayed until after the root and real-time bitmap inodes
* were consistently read in.
* Finish recovering the file system. This part needed to be delayed
* until after the root and real-time bitmap inodes were consistently
* read in.
*/
error = xfs_log_mount_finish(mp);
if (error) {
@ -955,8 +957,10 @@ xfs_mountfs(
xfs_rtunmount_inodes(mp);
out_rele_rip:
IRELE(rip);
cancel_delayed_work_sync(&mp->m_reclaim_work);
xfs_reclaim_inodes(mp, SYNC_WAIT);
out_log_dealloc:
xfs_log_unmount(mp);
xfs_log_mount_cancel(mp);
out_fail_wait:
if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp)
xfs_wait_buftarg(mp->m_logdev_targp);

57
fs/xfs/xfs_rtalloc.c
View File

@ -757,31 +757,30 @@ xfs_rtallocate_extent_size(
/*
* Allocate space to the bitmap or summary file, and zero it, for growfs.
*/
STATIC int /* error */
STATIC int
xfs_growfs_rt_alloc(
xfs_mount_t *mp, /* file system mount point */
xfs_extlen_t oblocks, /* old count of blocks */
xfs_extlen_t nblocks, /* new count of blocks */
xfs_inode_t *ip) /* inode (bitmap/summary) */
struct xfs_mount *mp, /* file system mount point */
xfs_extlen_t oblocks, /* old count of blocks */
xfs_extlen_t nblocks, /* new count of blocks */
struct xfs_inode *ip) /* inode (bitmap/summary) */
{
xfs_fileoff_t bno; /* block number in file */
xfs_buf_t *bp; /* temporary buffer for zeroing */
int committed; /* transaction committed flag */
xfs_daddr_t d; /* disk block address */
int error; /* error return value */
xfs_fsblock_t firstblock; /* first block allocated in xaction */
xfs_bmap_free_t flist; /* list of freed blocks */
xfs_fsblock_t fsbno; /* filesystem block for bno */
xfs_bmbt_irec_t map; /* block map output */
int nmap; /* number of block maps */
int resblks; /* space reservation */
xfs_fileoff_t bno; /* block number in file */
struct xfs_buf *bp; /* temporary buffer for zeroing */
int committed; /* transaction committed flag */
xfs_daddr_t d; /* disk block address */
int error; /* error return value */
xfs_fsblock_t firstblock;/* first block allocated in xaction */
struct xfs_bmap_free flist; /* list of freed blocks */
xfs_fsblock_t fsbno; /* filesystem block for bno */
struct xfs_bmbt_irec map; /* block map output */
int nmap; /* number of block maps */
int resblks; /* space reservation */
struct xfs_trans *tp;
/*
* Allocate space to the file, as necessary.
*/
while (oblocks < nblocks) {
xfs_trans_t *tp;
tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFSRT_ALLOC);
resblks = XFS_GROWFSRT_SPACE_RES(mp, nblocks - oblocks);
/*
@ -790,7 +789,7 @@ xfs_growfs_rt_alloc(
error = xfs_trans_reserve(tp, &M_RES(mp)->tr_growrtalloc,
resblks, 0);
if (error)
goto error_cancel;
goto out_trans_cancel;
/*
* Lock the inode.
*/
@ -808,16 +807,16 @@ xfs_growfs_rt_alloc(
if (!error && nmap < 1)
error = -ENOSPC;
if (error)
goto error_cancel;
goto out_bmap_cancel;
/*
* Free any blocks freed up in the transaction, then commit.
*/
error = xfs_bmap_finish(&tp, &flist, &committed);
if (error)
goto error_cancel;
goto out_bmap_cancel;
error = xfs_trans_commit(tp);
if (error)
goto error;
return error;
/*
* Now we need to clear the allocated blocks.
* Do this one block per transaction, to keep it simple.
@ -832,7 +831,7 @@ xfs_growfs_rt_alloc(
error = xfs_trans_reserve(tp, &M_RES(mp)->tr_growrtzero,
0, 0);
if (error)
goto error_cancel;
goto out_trans_cancel;
/*
* Lock the bitmap inode.
*/
@ -846,9 +845,7 @@ xfs_growfs_rt_alloc(
mp->m_bsize, 0);
if (bp == NULL) {
error = -EIO;
error_cancel:
xfs_trans_cancel(tp);
goto error;
goto out_trans_cancel;
}
memset(bp->b_addr, 0, mp->m_sb.sb_blocksize);
xfs_trans_log_buf(tp, bp, 0, mp->m_sb.sb_blocksize - 1);
@ -857,16 +854,20 @@ error_cancel:
*/
error = xfs_trans_commit(tp);
if (error)
goto error;
return error;
}
/*
* Go on to the next extent, if any.
*/
oblocks = map.br_startoff + map.br_blockcount;
}
return 0;
error:
out_bmap_cancel:
xfs_bmap_cancel(&flist);
out_trans_cancel:
xfs_trans_cancel(tp);
return error;
}

34
fs/xfs/xfs_trace.h
View File

@ -2089,6 +2089,40 @@ DEFINE_LOG_RECOVER_INO_ITEM(xfs_log_recover_inode_recover);
DEFINE_LOG_RECOVER_INO_ITEM(xfs_log_recover_inode_cancel);
DEFINE_LOG_RECOVER_INO_ITEM(xfs_log_recover_inode_skip);
DECLARE_EVENT_CLASS(xfs_log_recover_icreate_item_class,
TP_PROTO(struct xlog *log, struct xfs_icreate_log *in_f),
TP_ARGS(log, in_f),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(xfs_agnumber_t, agno)
__field(xfs_agblock_t, agbno)
__field(unsigned int, count)
__field(unsigned int, isize)
__field(xfs_agblock_t, length)
__field(unsigned int, gen)
),
TP_fast_assign(
__entry->dev = log->l_mp->m_super->s_dev;
__entry->agno = be32_to_cpu(in_f->icl_ag);
__entry->agbno = be32_to_cpu(in_f->icl_agbno);
__entry->count = be32_to_cpu(in_f->icl_count);
__entry->isize = be32_to_cpu(in_f->icl_isize);
__entry->length = be32_to_cpu(in_f->icl_length);
__entry->gen = be32_to_cpu(in_f->icl_gen);
),
TP_printk("dev %d:%d agno %u agbno %u count %u isize %u length %u "
"gen %u", MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->agno, __entry->agbno, __entry->count, __entry->isize,
__entry->length, __entry->gen)
)
#define DEFINE_LOG_RECOVER_ICREATE_ITEM(name) \
DEFINE_EVENT(xfs_log_recover_icreate_item_class, name, \
TP_PROTO(struct xlog *log, struct xfs_icreate_log *in_f), \
TP_ARGS(log, in_f))
DEFINE_LOG_RECOVER_ICREATE_ITEM(xfs_log_recover_icreate_cancel);
DEFINE_LOG_RECOVER_ICREATE_ITEM(xfs_log_recover_icreate_recover);
DECLARE_EVENT_CLASS(xfs_discard_class,
TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno,
xfs_agblock_t agbno, xfs_extlen_t len),

15
fs/xfs/xfs_trans.c
View File

@ -1019,9 +1019,10 @@ xfs_trans_cancel(
* chunk we've been working on and get a new transaction to continue.
*/
int
xfs_trans_roll(
__xfs_trans_roll(
struct xfs_trans **tpp,
struct xfs_inode *dp)
struct xfs_inode *dp,
int *committed)
{
struct xfs_trans *trans;
struct xfs_trans_res tres;
@ -1052,6 +1053,7 @@ xfs_trans_roll(
if (error)
return error;
*committed = 1;
trans = *tpp;
/*
@ -1074,3 +1076,12 @@ xfs_trans_roll(
xfs_trans_ijoin(trans, dp, 0);
return 0;
}
int
xfs_trans_roll(
struct xfs_trans **tpp,
struct xfs_inode *dp)
{
int committed = 0;
return __xfs_trans_roll(tpp, dp, &committed);
}

9
fs/xfs/xfs_trans.h
View File

@ -213,7 +213,6 @@ void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
void xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint);
struct xfs_efi_log_item *xfs_trans_get_efi(xfs_trans_t *, uint);
void xfs_efi_release(struct xfs_efi_log_item *, uint);
void xfs_trans_log_efi_extent(xfs_trans_t *,
struct xfs_efi_log_item *,
xfs_fsblock_t,
@ -221,11 +220,11 @@ void xfs_trans_log_efi_extent(xfs_trans_t *,
struct xfs_efd_log_item *xfs_trans_get_efd(xfs_trans_t *,
struct xfs_efi_log_item *,
uint);
void xfs_trans_log_efd_extent(xfs_trans_t *,
struct xfs_efd_log_item *,
xfs_fsblock_t,
xfs_extlen_t);
int xfs_trans_free_extent(struct xfs_trans *,
struct xfs_efd_log_item *, xfs_fsblock_t,
xfs_extlen_t);
int xfs_trans_commit(struct xfs_trans *);
int __xfs_trans_roll(struct xfs_trans **, struct xfs_inode *, int *);
int xfs_trans_roll(struct xfs_trans **, struct xfs_inode *);
void xfs_trans_cancel(xfs_trans_t *);
int xfs_trans_ail_init(struct xfs_mount *);

32
fs/xfs/xfs_trans_extfree.c
View File

@ -25,6 +25,7 @@
#include "xfs_trans.h"
#include "xfs_trans_priv.h"
#include "xfs_extfree_item.h"
#include "xfs_alloc.h"
/*
* This routine is called to allocate an "extent free intention"
@ -108,19 +109,30 @@ xfs_trans_get_efd(xfs_trans_t *tp,
}
/*
* This routine is called to indicate that the described
* extent is to be logged as having been freed. It should
* be called once for each extent freed.
* 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.
*/
void
xfs_trans_log_efd_extent(xfs_trans_t *tp,
xfs_efd_log_item_t *efdp,
xfs_fsblock_t start_block,
xfs_extlen_t ext_len)
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)
{
uint next_extent;
xfs_extent_t *extp;
struct xfs_extent *extp;
int error;
error = xfs_free_extent(tp, start_block, ext_len);
/*
* 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;
efdp->efd_item.li_desc->lid_flags |= XFS_LID_DIRTY;
@ -130,4 +142,6 @@ xfs_trans_log_efd_extent(xfs_trans_t *tp,
extp->ext_start = start_block;
extp->ext_len = ext_len;
efdp->efd_next_extent++;
return error;
}

15
fs/xfs/xfs_trans_priv.h
View File

@ -119,6 +119,21 @@ xfs_trans_ail_delete(
xfs_trans_ail_delete_bulk(ailp, &lip, 1, shutdown_type);
}
static inline void
xfs_trans_ail_remove(
struct xfs_log_item *lip,
int shutdown_type)
{
struct xfs_ail *ailp = lip->li_ailp;
spin_lock(&ailp->xa_lock);
/* xfs_trans_ail_delete() drops the AIL lock */
if (lip->li_flags & XFS_LI_IN_AIL)
xfs_trans_ail_delete(ailp, lip, shutdown_type);
else
spin_unlock(&ailp->xa_lock);
}
void xfs_ail_push(struct xfs_ail *, xfs_lsn_t);
void xfs_ail_push_all(struct xfs_ail *);
void xfs_ail_push_all_sync(struct xfs_ail *);