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| author | Miklos Szeredi <mszeredi@suse.cz> | 2011-11-21 12:11:30 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-01-06 23:20:12 -0500 |
| commit | 39f7c4db1d2d9e2e2a90abdf34811783089d217d (patch) | |
| tree | cbc3496ce21e26b5891bb4c4d4155853317ddfb3 /fs/super.c | |
| parent | 34c80b1d93e6e20ca9dea0baf583a5b5510d92d4 (diff) | |
| download | lwn-39f7c4db1d2d9e2e2a90abdf34811783089d217d.tar.gz lwn-39f7c4db1d2d9e2e2a90abdf34811783089d217d.zip | |
vfs: keep list of mounts for each superblock
Keep track of vfsmounts belonging to a superblock. List is protected
by vfsmount_lock.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Tested-by: Toshiyuki Okajima <toshi.okajima@jp.fujitsu.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/super.c')
| -rw-r--r-- | fs/super.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/super.c b/fs/super.c index 0413f51a9f0f..993ca8f128d6 100644 --- a/fs/super.c +++ b/fs/super.c @@ -142,6 +142,7 @@ static struct super_block *alloc_super(struct file_system_type *type) INIT_LIST_HEAD(&s->s_dentry_lru); INIT_LIST_HEAD(&s->s_inode_lru); spin_lock_init(&s->s_inode_lru_lock); + INIT_LIST_HEAD(&s->s_mounts); init_rwsem(&s->s_umount); mutex_init(&s->s_lock); lockdep_set_class(&s->s_umount, &type->s_umount_key); @@ -200,6 +201,7 @@ static inline void destroy_super(struct super_block *s) free_percpu(s->s_files); #endif security_sb_free(s); + WARN_ON(!list_empty(&s->s_mounts)); kfree(s->s_subtype); kfree(s->s_options); kfree(s); |