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Date: Fri, 24 Nov 2023 06:06:29 +0000
From: Al Viro <viro@...iv.linux.org.uk>
To: linux-fsdevel@...r.kernel.org
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
Christian Brauner <brauner@...nel.org>,
linux-kernel@...r.kernel.org
Subject: [PATCH 05/20] DCACHE_... ->d_flags bits: switch to BIT()
For bits 20..22 (inode type cached in ->d_flags) turn the definitions into
expressions like (5 << 20); everything else turns into straight use of
BIT()
Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
include/linux/dcache.h | 76 +++++++++++++++++++++---------------------
1 file changed, 38 insertions(+), 38 deletions(-)
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 1d9f7f132055..d9c314cc93b8 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -151,13 +151,13 @@ struct dentry_operations {
*/
/* d_flags entries */
-#define DCACHE_OP_HASH 0x00000001
-#define DCACHE_OP_COMPARE 0x00000002
-#define DCACHE_OP_REVALIDATE 0x00000004
-#define DCACHE_OP_DELETE 0x00000008
-#define DCACHE_OP_PRUNE 0x00000010
+#define DCACHE_OP_HASH BIT(0)
+#define DCACHE_OP_COMPARE BIT(1)
+#define DCACHE_OP_REVALIDATE BIT(2)
+#define DCACHE_OP_DELETE BIT(3)
+#define DCACHE_OP_PRUNE BIT(4)
-#define DCACHE_DISCONNECTED 0x00000020
+#define DCACHE_DISCONNECTED BIT(5)
/* This dentry is possibly not currently connected to the dcache tree, in
* which case its parent will either be itself, or will have this flag as
* well. nfsd will not use a dentry with this bit set, but will first
@@ -168,50 +168,50 @@ struct dentry_operations {
* dentry into place and return that dentry rather than the passed one,
* typically using d_splice_alias. */
-#define DCACHE_REFERENCED 0x00000040 /* Recently used, don't discard. */
+#define DCACHE_REFERENCED BIT(6) /* Recently used, don't discard. */
-#define DCACHE_DONTCACHE 0x00000080 /* Purge from memory on final dput() */
+#define DCACHE_DONTCACHE BIT(7) /* Purge from memory on final dput() */
-#define DCACHE_CANT_MOUNT 0x00000100
-#define DCACHE_GENOCIDE 0x00000200
-#define DCACHE_SHRINK_LIST 0x00000400
+#define DCACHE_CANT_MOUNT BIT(8)
+#define DCACHE_GENOCIDE BIT(9)
+#define DCACHE_SHRINK_LIST BIT(10)
-#define DCACHE_OP_WEAK_REVALIDATE 0x00000800
+#define DCACHE_OP_WEAK_REVALIDATE BIT(11)
-#define DCACHE_NFSFS_RENAMED 0x00001000
+#define DCACHE_NFSFS_RENAMED BIT(12)
/* this dentry has been "silly renamed" and has to be deleted on the last
* dput() */
-#define DCACHE_COOKIE 0x00002000 /* For use by dcookie subsystem */
-#define DCACHE_FSNOTIFY_PARENT_WATCHED 0x00004000
+#define DCACHE_COOKIE BIT(13) /* For use by dcookie subsystem */
+#define DCACHE_FSNOTIFY_PARENT_WATCHED BIT(14)
/* Parent inode is watched by some fsnotify listener */
-#define DCACHE_DENTRY_KILLED 0x00008000
+#define DCACHE_DENTRY_KILLED BIT(15)
-#define DCACHE_MOUNTED 0x00010000 /* is a mountpoint */
-#define DCACHE_NEED_AUTOMOUNT 0x00020000 /* handle automount on this dir */
-#define DCACHE_MANAGE_TRANSIT 0x00040000 /* manage transit from this dirent */
+#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_MANAGED_DENTRY \
(DCACHE_MOUNTED|DCACHE_NEED_AUTOMOUNT|DCACHE_MANAGE_TRANSIT)
-#define DCACHE_LRU_LIST 0x00080000
-
-#define DCACHE_ENTRY_TYPE 0x00700000
-#define DCACHE_MISS_TYPE 0x00000000 /* Negative dentry (maybe fallthru to nowhere) */
-#define DCACHE_WHITEOUT_TYPE 0x00100000 /* Whiteout dentry (stop pathwalk) */
-#define DCACHE_DIRECTORY_TYPE 0x00200000 /* Normal directory */
-#define DCACHE_AUTODIR_TYPE 0x00300000 /* Lookupless directory (presumed automount) */
-#define DCACHE_REGULAR_TYPE 0x00400000 /* Regular file type (or fallthru to such) */
-#define DCACHE_SPECIAL_TYPE 0x00500000 /* Other file type (or fallthru to such) */
-#define DCACHE_SYMLINK_TYPE 0x00600000 /* Symlink (or fallthru to such) */
-
-#define DCACHE_MAY_FREE 0x00800000
-#define DCACHE_FALLTHRU 0x01000000 /* Fall through to lower layer */
-#define DCACHE_NOKEY_NAME 0x02000000 /* Encrypted name encoded without key */
-#define DCACHE_OP_REAL 0x04000000
-
-#define DCACHE_PAR_LOOKUP 0x10000000 /* being looked up (with parent locked shared) */
-#define DCACHE_DENTRY_CURSOR 0x20000000
-#define DCACHE_NORCU 0x40000000 /* No RCU delay for freeing */
+#define DCACHE_LRU_LIST BIT(19)
+
+#define DCACHE_ENTRY_TYPE (7 << 20) /* bits 20..22 are for storing type: */
+#define DCACHE_MISS_TYPE (0 << 20) /* Negative dentry (maybe fallthru to nowhere) */
+#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 (or fallthru to such) */
+#define DCACHE_SPECIAL_TYPE (5 << 20) /* Other file type (or fallthru to such) */
+#define DCACHE_SYMLINK_TYPE (6 << 20) /* Symlink (or fallthru to such) */
+
+#define DCACHE_MAY_FREE BIT(23)
+#define DCACHE_FALLTHRU BIT(24) /* Fall through to lower layer */
+#define DCACHE_NOKEY_NAME BIT(25) /* Encrypted name encoded without key */
+#define DCACHE_OP_REAL BIT(26)
+
+#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 */
extern seqlock_t rename_lock;
--
2.39.2
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