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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-06-08 01:39:33 +0900
committerAl Viro <viro@zeniv.linux.org.uk>2009-06-11 21:36:18 -0400
commitaa7dfb8954ccf49e026ba13d12991a4eb7defb96 (patch)
treeff2d6cf81629322906bd0cea1423e9efe516ffee /fs/nilfs2/the_nilfs.h
parente59399d0102c1813cec48db5cebe1750313f88a0 (diff)
downloadop-kernel-dev-aa7dfb8954ccf49e026ba13d12991a4eb7defb96.zip
op-kernel-dev-aa7dfb8954ccf49e026ba13d12991a4eb7defb96.tar.gz
nilfs2: get rid of bd_mount_sem use from nilfs
This will remove every bd_mount_sem use in nilfs. The intended exclusion control was replaced by the previous patch ("nilfs2: correct exclusion control in nilfs_remount function") for nilfs_remount(), and this patch will replace remains with a new mutex that this inserts in nilfs object. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Cc: Christoph Hellwig <hch@infradead.org> 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.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h
index d0cf4fb..e8adbff 100644
--- a/fs/nilfs2/the_nilfs.h
+++ b/fs/nilfs2/the_nilfs.h
@@ -49,6 +49,7 @@ enum {
* @ns_writer: back pointer to writable nilfs_sb_info
* @ns_sem: semaphore for shared states
* @ns_super_sem: semaphore for global operations across super block instances
+ * @ns_mount_mutex: mutex protecting mount process of nilfs
* @ns_writer_mutex: mutex protecting ns_writer attach/detach
* @ns_writer_refcount: number of referrers on ns_writer
* @ns_current: back pointer to current mount
@@ -98,6 +99,7 @@ struct the_nilfs {
struct nilfs_sb_info *ns_writer;
struct rw_semaphore ns_sem;
struct rw_semaphore ns_super_sem;
+ struct mutex ns_mount_mutex;
struct mutex ns_writer_mutex;
atomic_t ns_writer_refcount;
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