diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-29 08:44:40 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-29 08:44:40 -0700 |
| commit | e64de3b96c1ba3c1de236a4a103ec21234a5849f (patch) | |
| tree | b4ed91858a3d353bd72e3be101433ac821759379 /fs/jfs/jfs_discard.c | |
| parent | dbfd5ccc057fbefb7247614741efbf96be0258c5 (diff) | |
| parent | 8f0d8163b50e01f398b14bcd4dc039ac5ab18d64 (diff) | |
| download | linux-e64de3b96c1ba3c1de236a4a103ec21234a5849f.tar.bz2 | |
Merge 3.7-rc3 into char-misc-next
This brings in the various 3.7-rc3 char fixes into char-misc-next.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/jfs/jfs_discard.c')
| -rw-r--r-- | fs/jfs/jfs_discard.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/fs/jfs/jfs_discard.c b/fs/jfs/jfs_discard.c index 9947563e4175..dfcd50304559 100644 --- a/fs/jfs/jfs_discard.c +++ b/fs/jfs/jfs_discard.c @@ -83,7 +83,7 @@ int jfs_ioc_trim(struct inode *ip, struct fstrim_range *range) struct bmap *bmp = JFS_SBI(ip->i_sb)->bmap; struct super_block *sb = ipbmap->i_sb; int agno, agno_end; - s64 start, end, minlen; + u64 start, end, minlen; u64 trimmed = 0; /** @@ -93,15 +93,19 @@ int jfs_ioc_trim(struct inode *ip, struct fstrim_range *range) * minlen: minimum extent length in Bytes */ start = range->start >> sb->s_blocksize_bits; - if (start < 0) - start = 0; end = start + (range->len >> sb->s_blocksize_bits) - 1; - if (end >= bmp->db_mapsize) - end = bmp->db_mapsize - 1; minlen = range->minlen >> sb->s_blocksize_bits; - if (minlen <= 0) + if (minlen == 0) minlen = 1; + if (minlen > bmp->db_agsize || + start >= bmp->db_mapsize || + range->len < sb->s_blocksize) + return -EINVAL; + + if (end >= bmp->db_mapsize) + end = bmp->db_mapsize - 1; + /** * we trim all ag's within the range */ |