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xfs: return an offset instead of a pointer from xlog_align

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This simplifies both the helper and the callers.  We lost a bit of
size sanity checking, but that is already covered by KASAN if needed.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Christoph Hellwig 2019-06-28 19:27:26 -07:00 committed by Darrick J. Wong
parent 1058d0f5ee
commit 18ffb8c3f0
1 changed files with 5 additions and 11 deletions
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16
fs/xfs/xfs_log_recover.c
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@ -151,20 +151,14 @@ xlog_put_bp(
* Return the address of the start of the given block number's data
* in a log buffer. The buffer covers a log sector-aligned region.
*/
STATIC char *
static inline unsigned int
xlog_align(
struct xlog *log,
xfs_daddr_t blk_no,
int nbblks,
struct xfs_buf *bp)
xfs_daddr_t blk_no)
{
xfs_daddr_t offset = blk_no & ((xfs_daddr_t)log->l_sectBBsize - 1);
ASSERT(offset + nbblks <= bp->b_length);
return bp->b_addr + BBTOB(offset);
return BBTOB(blk_no & ((xfs_daddr_t)log->l_sectBBsize - 1));
}
/*
* nbblks should be uint, but oh well. Just want to catch that 32-bit length.
*/
@ -216,7 +210,7 @@ xlog_bread(
if (error)
return error;
*offset = xlog_align(log, blk_no, nbblks, bp);
*offset = bp->b_addr + xlog_align(log, blk_no);
return 0;
}
@ -1713,7 +1707,7 @@ xlog_write_log_records(
}
offset = xlog_align(log, start_block, endcount, bp);
offset = bp->b_addr + xlog_align(log, start_block);
for (; j < endcount; j++) {
xlog_add_record(log, offset, cycle, i+j,
tail_cycle, tail_block);