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| author | Jie Liu <jeff.liu@oracle.com> | 2014-01-21 15:48:35 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-21 16:19:42 -0800 |
| commit | aa89762c54800208d5afdcd8e6bf124818f17fe0 (patch) | |
| tree | 36beda22a4b7bc8697fbd05a02af4a2d0dab1b04 | |
| parent | 19e8ac2721148a475833d7b5f893f9b81fbb0045 (diff) | |
| download | linux-aa89762c54800208d5afdcd8e6bf124818f17fe0.tar.bz2 | |
ocfs2: return EINVAL if the given range to discard is less than block size
For FITRIM ioctl(2), we should not keep silence if the given range
length ls less than a block size as there is no data blocks would be
discareded. Hence it should return EINVAL instead. This issue can be
verified via xfstests/generic/288 which is used for FITRIM argument
handling tests.
Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/ocfs2/alloc.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index dc7411fe185d..8750ae1b8636 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -7260,14 +7260,8 @@ int ocfs2_trim_fs(struct super_block *sb, struct fstrim_range *range) start = range->start >> osb->s_clustersize_bits; len = range->len >> osb->s_clustersize_bits; minlen = range->minlen >> osb->s_clustersize_bits; - trimmed = 0; - - if (!len) { - range->len = 0; - return 0; - } - if (minlen >= osb->bitmap_cpg) + if (minlen >= osb->bitmap_cpg || range->len < sb->s_blocksize) return -EINVAL; main_bm_inode = ocfs2_get_system_file_inode(osb, @@ -7293,6 +7287,7 @@ int ocfs2_trim_fs(struct super_block *sb, struct fstrim_range *range) goto out_unlock; } + len = range->len >> osb->s_clustersize_bits; if (start + len > le32_to_cpu(main_bm->i_clusters)) len = le32_to_cpu(main_bm->i_clusters) - start; @@ -7307,6 +7302,7 @@ int ocfs2_trim_fs(struct super_block *sb, struct fstrim_range *range) last_group = ocfs2_which_cluster_group(main_bm_inode, start + len - 1); last_bit = osb->bitmap_cpg; + trimmed = 0; for (group = first_group; group <= last_group;) { if (first_bit + len >= osb->bitmap_cpg) last_bit = osb->bitmap_cpg; |