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>
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@ -217,7 +217,6 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags)
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mutex_init(&s->s_dquot.dqio_mutex);
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mutex_init(&s->s_dquot.dqonoff_mutex);
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init_rwsem(&s->s_dquot.dqptr_sem);
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init_waitqueue_head(&s->s_wait_unfrozen);
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s->s_maxbytes = MAX_NON_LFS;
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s->s_op = &default_op;
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s->s_time_gran = 1000000000;
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@ -1459,7 +1459,6 @@ extern spinlock_t sb_lock;
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enum {
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SB_UNFROZEN = 0, /* FS is unfrozen */
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SB_FREEZE_WRITE = 1, /* Writes, dir ops, ioctls frozen */
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SB_FREEZE_TRANS = 2,
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SB_FREEZE_PAGEFAULT = 2, /* Page faults stopped as well */
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SB_FREEZE_FS = 3, /* For internal FS use (e.g. to stop
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* internal threads if needed) */
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@ -1528,8 +1527,6 @@ struct super_block {
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struct hlist_node s_instances;
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struct quota_info s_dquot; /* Diskquota specific options */
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int s_frozen;
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wait_queue_head_t s_wait_unfrozen;
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struct sb_writers s_writers;
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char s_id[32]; /* Informational name */
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@ -1585,8 +1582,6 @@ extern struct timespec current_fs_time(struct super_block *sb);
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/*
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* Snapshotting support.
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*/
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/* Will go away when all users are converted */
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#define vfs_check_frozen(sb, level) do { } while (0)
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void __sb_end_write(struct super_block *sb, int level);
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int __sb_start_write(struct super_block *sb, int level, bool wait);
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