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authorVyacheslav Dubeyko <Vyacheslav.Dubeyko@hgst.com>2014-08-08 14:20:52 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-08 15:57:21 -0700
commita5a7332a291b55beb0863b119816d12ffc04dfb0 (patch)
tree4c217b1629b4f6931e68dcc9abf790f0fa682119 /fs/nilfs2/the_nilfs.h
parenta2ecb791a9d6e71a2d37d66034475a92ebc7e02c (diff)
downloadlinux-a5a7332a291b55beb0863b119816d12ffc04dfb0.tar.bz2
nilfs2: add /sys/fs/nilfs2/<device>/mounted_snapshots/<snapshot> group
This patch adds creation of <snapshot> group for every mounted snapshot in /sys/fs/nilfs2/<device>/mounted_snapshots group. The group contains details about mounted snapshot: (1) inodes_count - show number of inodes for snapshot. (2) blocks_count - show number of blocks for snapshot. Signed-off-by: Vyacheslav Dubeyko <Vyacheslav.Dubeyko@hgst.com> Cc: Vyacheslav Dubeyko <slava@dubeyko.com> Cc: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Cc: Michael L. Semon <mlsemon35@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/nilfs2/the_nilfs.h')
-rw-r--r--fs/nilfs2/the_nilfs.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h
index 7fe822307f98..d01ead1bea9a 100644
--- a/fs/nilfs2/the_nilfs.h
+++ b/fs/nilfs2/the_nilfs.h
@@ -243,6 +243,8 @@ THE_NILFS_FNS(SB_DIRTY, sb_dirty)
* @ifile: inode file
* @inodes_count: number of inodes
* @blocks_count: number of blocks
+ * @snapshot_kobj: /sys/fs/<nilfs>/<device>/mounted_snapshots/<snapshot>
+ * @snapshot_kobj_unregister: completion state for kernel object
*/
struct nilfs_root {
__u64 cno;
@@ -254,6 +256,10 @@ struct nilfs_root {
atomic64_t inodes_count;
atomic64_t blocks_count;
+
+ /* /sys/fs/<nilfs>/<device>/mounted_snapshots/<snapshot> */
+ struct kobject snapshot_kobj;
+ struct completion snapshot_kobj_unregister;
};
/* Special checkpoint number */