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-rw-r--r--fs/xfs/libxfs/xfs_rtbitmap.c31
1 files changed, 30 insertions, 1 deletions
diff --git a/fs/xfs/libxfs/xfs_rtbitmap.c b/fs/xfs/libxfs/xfs_rtbitmap.c
index 4de97c4e8ebd..02d6668d860f 100644
--- a/fs/xfs/libxfs/xfs_rtbitmap.c
+++ b/fs/xfs/libxfs/xfs_rtbitmap.c
@@ -69,7 +69,7 @@ xfs_rtbuf_cache_relse(
* Get a buffer for the bitmap or summary file block specified.
* The buffer is returned read and locked.
*/
-int
+static int
xfs_rtbuf_get(
struct xfs_rtalloc_args *args,
xfs_fileoff_t block, /* block number in bitmap or summary */
@@ -138,6 +138,35 @@ xfs_rtbuf_get(
return 0;
}
+int
+xfs_rtbitmap_read_buf(
+ struct xfs_rtalloc_args *args,
+ xfs_fileoff_t block)
+{
+ struct xfs_mount *mp = args->mp;
+
+ if (XFS_IS_CORRUPT(mp, block >= mp->m_sb.sb_rbmblocks)) {
+ xfs_rt_mark_sick(mp, XFS_SICK_RT_BITMAP);
+ return -EFSCORRUPTED;
+ }
+
+ return xfs_rtbuf_get(args, block, 0);
+}
+
+int
+xfs_rtsummary_read_buf(
+ struct xfs_rtalloc_args *args,
+ xfs_fileoff_t block)
+{
+ struct xfs_mount *mp = args->mp;
+
+ if (XFS_IS_CORRUPT(mp, block >= XFS_B_TO_FSB(mp, mp->m_rsumsize))) {
+ xfs_rt_mark_sick(args->mp, XFS_SICK_RT_SUMMARY);
+ return -EFSCORRUPTED;
+ }
+ return xfs_rtbuf_get(args, block, 1);
+}
+
/*
* Searching backward from start find the first block whose allocated/free state
* is different from start's.