Commit 9748cb2d authored by NeilBrown's avatar NeilBrown Committed by Christian Brauner
Browse files

VFS: repack DENTRY_ flags. 



Bits 13, 23, 24, and 27 are not used.  Move all those holes to the end.

Signed-off-by: default avatarNeilBrown <neilb@suse.de>
Link: https://lore.kernel.org/r/20250206054504.2950516-7-neilb@suse.de


Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 2014c95a

include/linux/dcache.h

+19 −19
Original line number Diff line number Diff line
@@ -203,34 +203,34 @@ struct dentry_operations { 
#define DCACHE_NFSFS_RENAMED		BIT(12)

     /* this dentry has been "silly renamed" and has to be deleted on the last

      * dput() */

#define DCACHE_FSNOTIFY_PARENT_WATCHED	BIT(14)

#define DCACHE_FSNOTIFY_PARENT_WATCHED	BIT(13)

     /* Parent inode is watched by some fsnotify listener */



#define DCACHE_DENTRY_KILLED		BIT(15)

#define DCACHE_DENTRY_KILLED		BIT(14)



#define DCACHE_MOUNTED			BIT(16) /* is a mountpoint */

#define DCACHE_NEED_AUTOMOUNT		BIT(17) /* handle automount on this dir */

#define DCACHE_MANAGE_TRANSIT		BIT(18) /* manage transit from this dirent */

#define DCACHE_MOUNTED			BIT(15) /* is a mountpoint */

#define DCACHE_NEED_AUTOMOUNT		BIT(16) /* handle automount on this dir */

#define DCACHE_MANAGE_TRANSIT		BIT(17) /* manage transit from this dirent */

#define DCACHE_MANAGED_DENTRY \

	(DCACHE_MOUNTED|DCACHE_NEED_AUTOMOUNT|DCACHE_MANAGE_TRANSIT)



#define DCACHE_LRU_LIST			BIT(19)

#define DCACHE_LRU_LIST			BIT(18)



#define DCACHE_ENTRY_TYPE		(7 << 20) /* bits 20..22 are for storing type: */

#define DCACHE_MISS_TYPE		(0 << 20) /* Negative dentry */

#define DCACHE_WHITEOUT_TYPE		(1 << 20) /* Whiteout dentry (stop pathwalk) */

#define DCACHE_DIRECTORY_TYPE		(2 << 20) /* Normal directory */

#define DCACHE_AUTODIR_TYPE		(3 << 20) /* Lookupless directory (presumed automount) */

#define DCACHE_REGULAR_TYPE		(4 << 20) /* Regular file type */

#define DCACHE_SPECIAL_TYPE		(5 << 20) /* Other file type */

#define DCACHE_SYMLINK_TYPE		(6 << 20) /* Symlink */

#define DCACHE_ENTRY_TYPE		(7 << 19) /* bits 19..21 are for storing type: */

#define DCACHE_MISS_TYPE		(0 << 19) /* Negative dentry */

#define DCACHE_WHITEOUT_TYPE		(1 << 19) /* Whiteout dentry (stop pathwalk) */

#define DCACHE_DIRECTORY_TYPE		(2 << 19) /* Normal directory */

#define DCACHE_AUTODIR_TYPE		(3 << 19) /* Lookupless directory (presumed automount) */

#define DCACHE_REGULAR_TYPE		(4 << 19) /* Regular file type */

#define DCACHE_SPECIAL_TYPE		(5 << 19) /* Other file type */

#define DCACHE_SYMLINK_TYPE		(6 << 19) /* Symlink */



#define DCACHE_NOKEY_NAME		BIT(25) /* Encrypted name encoded without key */

#define DCACHE_OP_REAL			BIT(26)

#define DCACHE_NOKEY_NAME		BIT(22) /* Encrypted name encoded without key */

#define DCACHE_OP_REAL			BIT(23)



#define DCACHE_PAR_LOOKUP		BIT(28) /* being looked up (with parent locked shared) */

#define DCACHE_DENTRY_CURSOR		BIT(29)

#define DCACHE_NORCU			BIT(30) /* No RCU delay for freeing */

#define DCACHE_PAR_LOOKUP		BIT(24) /* being looked up (with parent locked shared) */

#define DCACHE_DENTRY_CURSOR		BIT(25)

#define DCACHE_NORCU			BIT(26) /* No RCU delay for freeing */



extern seqlock_t rename_lock;