fs: Remove old freezing mechanism

Now that all users are converted, we can remove functions, variables, and
constants defined by the old freezing mechanism.

BugLink: https://bugs.launchpad.net/bugs/897421
Tested-by: Kamal Mostafa <kamal@canonical.com>
Tested-by: Peter M. Petrakis <peter.petrakis@canonical.com>
Tested-by: Dann Frazier <dann.frazier@canonical.com>
Tested-by: Massimo Morana <massimo.morana@canonical.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/super.c b/fs/super.c
index 0f64ecb7b1bf541b27b82e1e9806c64606bee3bc..a87dc1b1ac924ca62cfa841a844ea5a6718ad5a5 100644 (file)
--- a/fs/super.c
+++ b/fs/super.c
@@ -217,7 +217,6 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags)
                mutex_init(&s->s_dquot.dqio_mutex);
                mutex_init(&s->s_dquot.dqonoff_mutex);
                init_rwsem(&s->s_dquot.dqptr_sem);
-               init_waitqueue_head(&s->s_wait_unfrozen);
                s->s_maxbytes = MAX_NON_LFS;
                s->s_op = &default_op;
                s->s_time_gran = 1000000000;

diff --git a/include/linux/fs.h b/include/linux/fs.h
index aefed9426b03c7c8df8165628fb50832a514a027..0f4b79be871708e2d899a46bee7bad249ad28f51 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1459,7 +1459,6 @@ extern spinlock_t sb_lock;
 enum {
        SB_UNFROZEN = 0,                /* FS is unfrozen */
        SB_FREEZE_WRITE = 1,            /* Writes, dir ops, ioctls frozen */
-       SB_FREEZE_TRANS = 2,
        SB_FREEZE_PAGEFAULT = 2,        /* Page faults stopped as well */
        SB_FREEZE_FS = 3,               /* For internal FS use (e.g. to stop
                                         * internal threads if needed) */
@@ -1528,8 +1527,6 @@ struct super_block {
        struct hlist_node       s_instances;
        struct quota_info       s_dquot;        /* Diskquota specific options */
 
-       int                     s_frozen;
-       wait_queue_head_t       s_wait_unfrozen;
        struct sb_writers       s_writers;
 
        char s_id[32];                          /* Informational name */
@@ -1585,8 +1582,6 @@ extern struct timespec current_fs_time(struct super_block *sb);
 /*
  * Snapshotting support.
  */
-/* Will go away when all users are converted */
-#define vfs_check_frozen(sb, level) do { } while (0)
 
 void __sb_end_write(struct super_block *sb, int level);
 int __sb_start_write(struct super_block *sb, int level, bool wait);