From: NeilBrown <neilb@suse.de>
To: Alexander Viro <viro@zeniv.linux.org.uk>,
Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
Linus Torvalds <torvalds@linux-foundation.org>,
Jeff Layton <jlayton@kernel.org>,
Dave Chinner <david@fromorbit.com>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 06/19] VFS: repack DENTRY_ flags.
Date: Thu, 6 Feb 2025 16:42:43 +1100 [thread overview]
Message-ID: <20250206054504.2950516-7-neilb@suse.de> (raw)
In-Reply-To: <20250206054504.2950516-1-neilb@suse.de>
Bits 13, 23, 24, and 27 are not used. Move all those holes to the end.
Signed-off-by: NeilBrown <neilb@suse.de>
---
include/linux/dcache.h | 38 +++++++++++++++++++-------------------
1 file changed, 19 insertions(+), 19 deletions(-)
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index b03cbb0177a3..d5816cf19538 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -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;
--
2.47.1
next prev parent reply other threads:[~2025-02-06 5:46 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-06 5:42 [PATCH 00/19 v7?] RFC: Allow concurrent and async changes in a directory NeilBrown
2025-02-06 5:42 ` [PATCH 01/19] VFS: introduce vfs_mkdir_return() NeilBrown
2025-02-06 12:24 ` Christian Brauner
2025-02-06 23:52 ` NeilBrown
2025-02-06 13:52 ` Jeff Layton
2025-02-06 23:57 ` NeilBrown
2025-02-07 19:45 ` Al Viro
2025-02-10 4:36 ` NeilBrown
2025-02-06 5:42 ` [PATCH 02/19] VFS: use global wait-queue table for d_alloc_parallel() NeilBrown
2025-02-07 19:32 ` Al Viro
2025-02-10 4:58 ` NeilBrown
2025-02-10 5:15 ` Al Viro
2025-02-11 23:35 ` NeilBrown
2025-02-12 0:25 ` Al Viro
2025-02-12 1:46 ` NeilBrown
2025-02-06 5:42 ` [PATCH 03/19] VFS: use d_alloc_parallel() in lookup_one_qstr_excl() and rename it NeilBrown
2025-02-06 14:30 ` Jeff Layton
2025-02-07 0:04 ` NeilBrown
2025-02-07 0:23 ` Jeff Layton
2025-02-07 20:01 ` Al Viro
2025-02-06 5:42 ` [PATCH 04/19] VFS: change kern_path_locked() and user_path_locked_at() to never return negative dentry NeilBrown
2025-02-06 12:31 ` Christian Brauner
2025-02-06 13:09 ` Christian Brauner
2025-02-07 0:08 ` NeilBrown
2025-02-06 5:42 ` [PATCH 05/19] VFS: add common error checks to lookup_one_qstr() NeilBrown
2025-02-06 12:33 ` Christian Brauner
2025-02-07 20:14 ` Al Viro
2025-02-09 20:23 ` Al Viro
2025-02-06 5:42 ` NeilBrown [this message]
2025-02-06 12:34 ` (subset) [PATCH 06/19] VFS: repack DENTRY_ flags Christian Brauner
2025-02-06 5:42 ` [PATCH 07/19] VFS: repack LOOKUP_ bit flags NeilBrown
2025-02-06 12:44 ` Christian Brauner
2025-02-07 0:24 ` NeilBrown
2025-02-06 12:54 ` (subset) " Christian Brauner
2025-02-06 5:42 ` [PATCH 08/19] VFS: introduce lookup_and_lock() and friends NeilBrown
2025-02-06 13:49 ` Christian Brauner
2025-02-07 1:28 ` NeilBrown
2025-02-07 20:22 ` Al Viro
2025-02-08 23:18 ` Al Viro
2025-02-12 5:22 ` NeilBrown
2025-02-12 15:51 ` Al Viro
2025-02-12 20:11 ` Al Viro
2025-02-12 4:49 ` NeilBrown
2025-02-06 5:42 ` [PATCH 09/19] VFS: add _async versions of the various directory modifying inode_operations NeilBrown
2025-02-06 13:15 ` Christian Brauner
2025-02-07 1:46 ` NeilBrown
2025-02-07 22:41 ` Al Viro
2025-02-09 1:09 ` Al Viro
2025-02-09 4:57 ` Al Viro
2025-02-06 5:42 ` [PATCH 10/19] VFS: introduce inode flags to report locking needs for directory ops NeilBrown
2025-02-06 13:22 ` Christian Brauner
2025-02-07 2:01 ` NeilBrown
2025-02-06 5:42 ` [PATCH 11/19] VFS: Add ability to exclusively lock a dentry and use for create/remove operations NeilBrown
2025-02-08 1:38 ` Al Viro
2025-02-09 6:40 ` Al Viro
2025-02-06 5:42 ` [PATCH 12/19] VFS: enhance d_splice_alias to accommodate shared-lock updates NeilBrown
2025-02-06 5:42 ` [PATCH 13/19] VFS: lock dentry for ->revalidate to avoid races with rename etc NeilBrown
2025-02-07 20:28 ` Al Viro
2025-02-07 20:35 ` Al Viro
2025-02-08 1:30 ` Al Viro
2025-02-08 1:35 ` Al Viro
2025-02-12 21:22 ` Al Viro
2025-02-06 5:42 ` [PATCH 14/19] VFS: Ensure no async updates happening in directory being removed NeilBrown
2025-02-06 14:06 ` Christian Brauner
2025-02-07 2:17 ` NeilBrown
2025-02-07 21:06 ` Al Viro
2025-02-08 22:06 ` Al Viro
2025-02-08 22:30 ` Linus Torvalds
2025-02-08 22:34 ` Linus Torvalds
2025-02-08 23:25 ` Al Viro
2025-02-06 5:42 ` [PATCH 15/19] VFS: Change lookup_and_lock() to use shared lock when possible NeilBrown
2025-02-06 5:42 ` [PATCH 16/19] VFS: add lookup_and_lock_rename() NeilBrown
2025-02-07 21:21 ` Al Viro
2025-02-06 5:42 ` [PATCH 17/19] nfsd: use lookup_and_lock_one() and lookup_and_lock_rename_one() NeilBrown
2025-02-06 5:42 ` [PATCH 18/19] nfs: change mkdir inode_operation to mkdir_async NeilBrown
2025-02-06 5:42 ` [PATCH 19/19] nfs: switch to _async for all directory ops NeilBrown
2025-02-13 3:51 ` Al Viro
2025-02-13 4:09 ` Al Viro
2025-02-13 18:01 ` Al Viro
2025-02-06 14:36 ` [PATCH 00/19 v7?] RFC: Allow concurrent and async changes in a directory Christian Brauner
2025-02-06 15:36 ` John Stoffel
2025-02-07 2:18 ` NeilBrown
2025-02-09 23:33 ` Al Viro
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