diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-11-27 20:01:25 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-11-27 20:01:25 +0000 |
| commit | 459d2a9f5fcf125ba736f7843189ccdfba11b1ff (patch) | |
| tree | 6664f0ae653081521a3e1df0c506a2532ae6168e /fs/jfs/jfs_discard.c | |
| parent | 1428c20f7c38e9fbf59923d1b9615ebdaf2862b7 (diff) | |
| parent | 9489e9dcae718d5fde988e4a684a0f55b5f94d17 (diff) | |
Merge tag 'v3.7-rc7' into asoc-ux500
Linux 3.7-rc7
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 9947563e417..dfcd5030455 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 */ |