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authorJie Liu <jeff.liu@oracle.com>2014-01-21 15:48:36 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-21 16:19:42 -0800
commit1ba2212bb3e9527a4b3d18692f5ffe204f29bb47 (patch)
tree6a8acca5e30c05b48c1a2144ddc63a3430d5df69
parentaa89762c54800208d5afdcd8e6bf124818f17fe0 (diff)
ocfs2: adjust minlen with discard_granularity in the FITRIM ioctl
Adjust minlen with discard_granularity for FITRIM ioctl(2) if the given minimum size in bytes is less than it because, discard granularity is used to tell us that the minimum size of extent that can be discarded by the storage device. This is inspired by ext4 commit 5c2ed62fd447 ("ext4: Adjust minlen with discard_granularity in the FITRIM ioctl") from Lukas Czerner. 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/ioctl.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c
index 4de6a2af592f..8ca3c29accbf 100644
--- a/fs/ocfs2/ioctl.c
+++ b/fs/ocfs2/ioctl.c
@@ -980,6 +980,8 @@ long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
if (copy_from_user(&range, argp, sizeof(range)))
return -EFAULT;
+ range.minlen = max_t(u64, q->limits.discard_granularity,
+ range.minlen);
ret = ocfs2_trim_fs(sb, &range);
if (ret < 0)
return ret;