1100 	if (sb->s_writers.frozen != SB_UNFROZEN)  in reconfigure_super()
1124 			if (sb->s_writers.frozen != SB_UNFROZEN)  in reconfigure_super()
1240  * emergency_thaw_all -- forcibly thaw every frozen filesystem
1519 	 * It is enough to check bdev was not frozen before we set s_bdev.  in setup_bdev_super()
1525 			warnf(fc, "%pg: Can't mount, blockdev is frozen", bdev);  in setup_bdev_super()
1897 		unsigned short old = sb->s_writers.frozen;  in wait_for_partially_frozen()
1900 		ret = wait_var_event_killable(&sb->s_writers.frozen,  in wait_for_partially_frozen()
1901 					       sb->s_writers.frozen != old);  in wait_for_partially_frozen()
1904 		 sb->s_writers.frozen != SB_UNFROZEN &&  in wait_for_partially_frozen()
1905 		 sb->s_writers.frozen != SB_FREEZE_COMPLETE);  in wait_for_partially_frozen()
1926  * userspace can both hold a filesystem frozen.  The filesystem remains frozen
1929  * During this function, sb->s_writers.frozen goes through these values:
1933  * SB_FREEZE_WRITE: The file system is in the process of being frozen.  New
1944  * SB_FREEZE_FS: The file system is frozen. Now all internal sources of fs
1950  * mostly auxiliary for filesystems to verify they do not modify frozen fs.
1952  * sb->s_writers.frozen is protected by sb->s_umount.
1963 	if (sb->s_writers.frozen == SB_FREEZE_COMPLETE) {  in freeze_super()
1980 	if (sb->s_writers.frozen != SB_UNFROZEN) {  in freeze_super()
1998 		sb->s_writers.frozen = SB_FREEZE_COMPLETE;  in freeze_super()
1999 		wake_up_var(&sb->s_writers.frozen);  in freeze_super()
2004 	sb->s_writers.frozen = SB_FREEZE_WRITE;  in freeze_super()
2012 	sb->s_writers.frozen = SB_FREEZE_PAGEFAULT;  in freeze_super()
2018 		sb->s_writers.frozen = SB_UNFROZEN;  in freeze_super()
2020 		wake_up_var(&sb->s_writers.frozen);  in freeze_super()
2026 	sb->s_writers.frozen = SB_FREEZE_FS;  in freeze_super()
2034 			sb->s_writers.frozen = SB_UNFROZEN;  in freeze_super()
2036 			wake_up_var(&sb->s_writers.frozen);  in freeze_super()
2043 	 * when frozen is set to SB_FREEZE_COMPLETE, and for thaw_super().  in freeze_super()
2046 	sb->s_writers.frozen = SB_FREEZE_COMPLETE;  in freeze_super()
2047 	wake_up_var(&sb->s_writers.frozen);  in freeze_super()
2056  * frozen both by userspace and the kernel, a thaw call from either source
2064 	if (sb->s_writers.frozen == SB_FREEZE_COMPLETE) {  in thaw_super_locked()
2087 		sb->s_writers.frozen = SB_UNFROZEN;  in thaw_super_locked()
2088 		wake_up_var(&sb->s_writers.frozen);  in thaw_super_locked()
2105 	sb->s_writers.frozen = SB_UNFROZEN;  in thaw_super_locked()
2106 	wake_up_var(&sb->s_writers.frozen);  in thaw_super_locked()