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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-11-19 13:58:46 +0300
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-11-20 04:05:52 +0300
commita057d2c01161444c48b12a60351ae6c7135f6e61 (patch)
tree066316a4e9a9d1d2979873c31e7855eb9c093c49 /fs/nilfs2/the_nilfs.h
parentf50a4c8149cc135921a8a0476bff8e622f59aef9 (diff)
downloadlinux-a057d2c01161444c48b12a60351ae6c7135f6e61.tar.xz
nilfs2: add helper to get if volume is in a valid state
This adds a helper function, nilfs_valid_fs() which returns if nilfs is in a valid state or not. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/the_nilfs.h')
-rw-r--r--fs/nilfs2/the_nilfs.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h
index 20abd55881e0..589786e33464 100644
--- a/fs/nilfs2/the_nilfs.h
+++ b/fs/nilfs2/the_nilfs.h
@@ -258,6 +258,16 @@ static inline void nilfs_put_sbinfo(struct nilfs_sb_info *sbi)
kfree(sbi);
}
+static inline int nilfs_valid_fs(struct the_nilfs *nilfs)
+{
+ unsigned valid_fs;
+
+ down_read(&nilfs->ns_sem);
+ valid_fs = (nilfs->ns_mount_state & NILFS_VALID_FS);
+ up_read(&nilfs->ns_sem);
+ return valid_fs;
+}
+
static inline void
nilfs_get_segment_range(struct the_nilfs *nilfs, __u64 segnum,
sector_t *seg_start, sector_t *seg_end)