summaryrefslogtreecommitdiffstats
path: root/fs/xfs/xfs_log_recover.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/xfs/xfs_log_recover.c')
-rw-r--r--fs/xfs/xfs_log_recover.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index f1220ec1896f..0de08e366315 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -121,6 +121,10 @@ xlog_put_bp(
xfs_buf_free(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 xfs_caddr_t
xlog_align(
xlog_t *log,
@@ -128,14 +132,14 @@ xlog_align(
int nbblks,
xfs_buf_t *bp)
{
+ xfs_daddr_t offset;
xfs_caddr_t ptr;
- if (log->l_sectBBsize == 1)
- return XFS_BUF_PTR(bp);
+ offset = blk_no & ((xfs_daddr_t) log->l_sectBBsize - 1);
+ ptr = XFS_BUF_PTR(bp) + BBTOB(offset);
+
+ ASSERT(ptr + BBTOB(nbblks) <= XFS_BUF_PTR(bp) + XFS_BUF_SIZE(bp));
- ptr = XFS_BUF_PTR(bp) + BBTOB((int)blk_no & log->l_sectbb_mask);
- ASSERT(XFS_BUF_SIZE(bp) >=
- BBTOB(nbblks + (blk_no & log->l_sectbb_mask)));
return ptr;
}