diff options
Diffstat (limited to 'fs/gfs2/bmap.c')
| -rw-r--r-- | fs/gfs2/bmap.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 8c25a64d8ae0..ce4a978e0c18 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -1351,6 +1351,7 @@ static inline bool walk_done(struct gfs2_sbd *sdp, static int punch_hole(struct gfs2_inode *ip, u64 offset, u64 length) { struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); + u64 maxsize = sdp->sd_heightsize[ip->i_height]; struct metapath mp = {}; struct buffer_head *dibh, *bh; struct gfs2_holder rd_gh; @@ -1366,6 +1367,14 @@ static int punch_hole(struct gfs2_inode *ip, u64 offset, u64 length) u64 prev_bnr = 0; __be64 *start, *end; + if (offset >= maxsize) { + /* + * The starting point lies beyond the allocated meta-data; + * there are no blocks do deallocate. + */ + return 0; + } + /* * The start position of the hole is defined by lblock, start_list, and * start_aligned. The end position of the hole is defined by lend, @@ -1379,7 +1388,6 @@ static int punch_hole(struct gfs2_inode *ip, u64 offset, u64 length) */ if (length) { - u64 maxsize = sdp->sd_heightsize[ip->i_height]; u64 end_offset = offset + length; u64 lend; |