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xfs: convert buf_cancel_table allocation to kmalloc_array

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While we're messing around with how recovery allocates and frees the
buffer cancellation table, convert the allocation to use kmalloc_array
instead of the old kmem_alloc APIs, and make it handle a null return,
even though that's not likely.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Darrick J. Wong 2022-05-27 10:27:19 +10:00 committed by Dave Chinner
parent 8db074bd84
commit 910bbdf2f4
3 changed files with 14 additions and 6 deletions
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2
fs/xfs/libxfs/xfs_log_recover.h
View file

@ -122,7 +122,7 @@ int xlog_recover_iget(struct xfs_mount *mp, xfs_ino_t ino,
struct xfs_inode **ipp);
void xlog_recover_release_intent(struct xlog *log, unsigned short intent_type,
uint64_t intent_id);
void xlog_alloc_buf_cancel_table(struct xlog *log);
int xlog_alloc_buf_cancel_table(struct xlog *log);
void xlog_free_buf_cancel_table(struct xlog *log);
#ifdef DEBUG

14
fs/xfs/xfs_buf_item_recover.c
View file

@ -1015,19 +1015,25 @@ xlog_check_buf_cancel_table(
}
#endif
void
int
xlog_alloc_buf_cancel_table(
struct xlog *log)
{
void *p;
int i;
ASSERT(log->l_buf_cancel_table == NULL);
log->l_buf_cancel_table = kmem_zalloc(XLOG_BC_TABLE_SIZE *
sizeof(struct list_head),
0);
p = kmalloc_array(XLOG_BC_TABLE_SIZE, sizeof(struct list_head),
GFP_KERNEL);
if (!p)
return -ENOMEM;
log->l_buf_cancel_table = p;
for (i = 0; i < XLOG_BC_TABLE_SIZE; i++)
INIT_LIST_HEAD(&log->l_buf_cancel_table[i]);
return 0;
}
void

4
fs/xfs/xfs_log_recover.c
View file

@ -3231,7 +3231,9 @@ xlog_do_log_recovery(
* First do a pass to find all of the cancelled buf log items.
* Store them in the buf_cancel_table for use in the second pass.
*/
xlog_alloc_buf_cancel_table(log);
error = xlog_alloc_buf_cancel_table(log);
if (error)
return error;
error = xlog_do_recovery_pass(log, head_blk, tail_blk,
XLOG_RECOVER_PASS1, NULL);