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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-06-07 20:39:31 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2009-06-12 05:36:18 +0400
commit6dd4740662405a68bb229ac2b9e0aeaaf2188bf2 (patch)
tree36e6ae2a095613be1c36e8828ee9471e60c09de6 /fs/nilfs2/the_nilfs.h
parent3f82ff55168e92859119bf348e9e0bd6714d2fea (diff)
downloadlinux-6dd4740662405a68bb229ac2b9e0aeaaf2188bf2.tar.xz
nilfs2: simplify remaining sget() use
This simplifies the test function passed on the remaining sget() callsite in nilfs. Instead of checking mount type (i.e. ro-mount/rw-mount/snapshot mount) in the test function passed to sget(), this patch first looks up the nilfs_sb_info struct which the given mount type matches, and then acquires the super block instance holding the nilfs_sb_info. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/nilfs2/the_nilfs.h')
-rw-r--r--fs/nilfs2/the_nilfs.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h
index 99f7e29a5335..be4c040fd629 100644
--- a/fs/nilfs2/the_nilfs.h
+++ b/fs/nilfs2/the_nilfs.h
@@ -201,6 +201,7 @@ void put_nilfs(struct the_nilfs *);
int init_nilfs(struct the_nilfs *, struct nilfs_sb_info *, char *);
int load_nilfs(struct the_nilfs *, struct nilfs_sb_info *);
int nilfs_count_free_blocks(struct the_nilfs *, sector_t *);
+struct nilfs_sb_info *nilfs_find_sbinfo(struct the_nilfs *, int, __u64);
int nilfs_checkpoint_is_mounted(struct the_nilfs *, __u64, int);
int nilfs_near_disk_full(struct the_nilfs *);
void nilfs_fall_back_super_block(struct the_nilfs *);
@@ -243,6 +244,12 @@ nilfs_detach_writer(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi)
mutex_unlock(&nilfs->ns_writer_mutex);
}
+static inline void nilfs_put_sbinfo(struct nilfs_sb_info *sbi)
+{
+ if (!atomic_dec_and_test(&sbi->s_count))
+ kfree(sbi);
+}
+
static inline void
nilfs_get_segment_range(struct the_nilfs *nilfs, __u64 segnum,
sector_t *seg_start, sector_t *seg_end)