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| author | Tao Ma <boyu.mt@taobao.com> | 2011-05-23 04:36:44 +0200 |
|---|---|---|
| committer | Joel Becker <jlbec@evilplan.org> | 2011-05-24 08:37:19 +0200 |
| commit | 55e67872b67ebd30d1326067cdba53a622ab497d (patch) | |
| tree | 6269c3ab8aebc81ee32997c3e23ca53c68db3482 | |
| parent | ocfs2: Add ocfs2_trim_fs for SSD trim support. (diff) | |
| download | linux-55e67872b67ebd30d1326067cdba53a622ab497d.tar.xz linux-55e67872b67ebd30d1326067cdba53a622ab497d.zip | |
ocfs2: Add FITRIM ioctl.
Add the corresponding ioctl function for FITRIM.
Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
| -rw-r--r-- | fs/ocfs2/ioctl.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c index 8f13c5989eae..312a28f433a4 100644 --- a/fs/ocfs2/ioctl.c +++ b/fs/ocfs2/ioctl.c @@ -542,6 +542,29 @@ long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) return -EFAULT; return ocfs2_info_handle(inode, &info, 0); + case FITRIM: + { + struct super_block *sb = inode->i_sb; + struct fstrim_range range; + int ret = 0; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (copy_from_user(&range, (struct fstrim_range *)arg, + sizeof(range))) + return -EFAULT; + + ret = ocfs2_trim_fs(sb, &range); + if (ret < 0) + return ret; + + if (copy_to_user((struct fstrim_range *)arg, &range, + sizeof(range))) + return -EFAULT; + + return 0; + } default: return -ENOTTY; } @@ -569,6 +592,7 @@ long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg) case OCFS2_IOC_GROUP_EXTEND: case OCFS2_IOC_GROUP_ADD: case OCFS2_IOC_GROUP_ADD64: + case FITRIM: break; case OCFS2_IOC_REFLINK: if (copy_from_user(&args, (struct reflink_arguments *)arg, |