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ocfs2: adjust minlen with discard_granularity in the FITRIM ioctl

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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 5c2ed62fd4 ("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>
This commit is contained in:
Jie Liu 2014-01-21 15:48:36 -08:00 committed by Linus Torvalds
parent aa89762c54
commit 1ba2212bb3
1 changed files with 2 additions and 0 deletions
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2
fs/ocfs2/ioctl.c
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@ -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;