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| author | Vyacheslav Dubeyko <Vyacheslav.Dubeyko@hgst.com> | 2014-08-08 14:20:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-08 15:57:21 -0700 |
| commit | a5a7332a291b55beb0863b119816d12ffc04dfb0 (patch) | |
| tree | 4c217b1629b4f6931e68dcc9abf790f0fa682119 /fs/nilfs2/sysfs.h | |
| parent | a2ecb791a9d6e71a2d37d66034475a92ebc7e02c (diff) | |
| download | lwn-a5a7332a291b55beb0863b119816d12ffc04dfb0.tar.gz lwn-a5a7332a291b55beb0863b119816d12ffc04dfb0.zip | |
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/sysfs.h')
| -rw-r--r-- | fs/nilfs2/sysfs.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/fs/nilfs2/sysfs.h b/fs/nilfs2/sysfs.h index 4e84e230e9dd..677e3a1a8370 100644 --- a/fs/nilfs2/sysfs.h +++ b/fs/nilfs2/sysfs.h @@ -86,6 +86,17 @@ NILFS_DEV_ATTR_STRUCT(checkpoints); NILFS_DEV_ATTR_STRUCT(superblock); NILFS_DEV_ATTR_STRUCT(segctor); +#define NILFS_CP_ATTR_STRUCT(name) \ +struct nilfs_##name##_attr { \ + struct attribute attr; \ + ssize_t (*show)(struct nilfs_##name##_attr *, struct nilfs_root *, \ + char *); \ + ssize_t (*store)(struct nilfs_##name##_attr *, struct nilfs_root *, \ + const char *, size_t); \ +}; + +NILFS_CP_ATTR_STRUCT(snapshot); + #define NILFS_ATTR(type, name, mode, show, store) \ static struct nilfs_##type##_attr nilfs_##type##_attr_##name = \ __ATTR(name, mode, show, store) @@ -126,6 +137,13 @@ NILFS_DEV_ATTR_STRUCT(segctor); #define NILFS_CHECKPOINTS_RW_ATTR(name) \ NILFS_RW_ATTR(checkpoints, name) +#define NILFS_SNAPSHOT_INFO_ATTR(name) \ + NILFS_INFO_ATTR(snapshot, name) +#define NILFS_SNAPSHOT_RO_ATTR(name) \ + NILFS_RO_ATTR(snapshot, name) +#define NILFS_SNAPSHOT_RW_ATTR(name) \ + NILFS_RW_ATTR(snapshot, name) + #define NILFS_SUPERBLOCK_RO_ATTR(name) \ NILFS_RO_ATTR(superblock, name) #define NILFS_SUPERBLOCK_RW_ATTR(name) \ @@ -148,6 +166,8 @@ NILFS_DEV_ATTR_STRUCT(segctor); (&nilfs_mounted_snapshots_attr_##name.attr) #define NILFS_CHECKPOINTS_ATTR_LIST(name) \ (&nilfs_checkpoints_attr_##name.attr) +#define NILFS_SNAPSHOT_ATTR_LIST(name) \ + (&nilfs_snapshot_attr_##name.attr) #define NILFS_SUPERBLOCK_ATTR_LIST(name) \ (&nilfs_superblock_attr_##name.attr) #define NILFS_SEGCTOR_ATTR_LIST(name) \ |