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authorVyacheslav Dubeyko <Vyacheslav.Dubeyko@hgst.com>2014-08-08 23:20:52 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-09 00:57:21 +0200
commita5a7332a291b55beb0863b119816d12ffc04dfb0 (patch)
tree4c217b1629b4f6931e68dcc9abf790f0fa682119 /fs/nilfs2/sysfs.h
parentnilfs2: add /sys/fs/nilfs2/<device>/mounted_snapshots group (diff)
downloadlinux-a5a7332a291b55beb0863b119816d12ffc04dfb0.tar.xz
linux-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.h20
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) \