linux-kernel - [PATCH] vfs: remove SLAB_MEM

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Date: Sat, 24 Feb 2024 13:53:15 +0000
From: chengming.zhou@...ux.dev
To: viro@...iv.linux.org.uk,
	brauner@...nel.org,
	jack@...e.cz
Cc: linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-mm@...ck.org,
	vbabka@...e.cz,
	roman.gushchin@...ux.dev,
	Xiongwei.Song@...driver.com,
	chengming.zhou@...ux.dev,
	Chengming Zhou <zhouchengming@...edance.com>
Subject: [PATCH] vfs: remove SLAB_MEM_SPREAD flag usage

From: Chengming Zhou <zhouchengming@...edance.com>

The SLAB_MEM_SPREAD flag is already a no-op as of 6.8-rc1, remove
its usage so we can delete it from slab. No functional change.

Signed-off-by: Chengming Zhou <zhouchengming@...edance.com>
---
 fs/buffer.c  | 2 +-
 fs/dcache.c  | 2 +-
 fs/inode.c   | 2 +-
 fs/mbcache.c | 3 +--
 4 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/fs/buffer.c b/fs/buffer.c
index b55dea034a5d..9a54077de87d 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -3122,7 +3122,7 @@ void __init buffer_init(void)
 	int ret;
 
 	bh_cachep = KMEM_CACHE(buffer_head,
-				SLAB_RECLAIM_ACCOUNT|SLAB_PANIC|SLAB_MEM_SPREAD);
+				SLAB_RECLAIM_ACCOUNT|SLAB_PANIC);
 	/*
 	 * Limit the bh occupancy to 10% of ZONE_NORMAL
 	 */
diff --git a/fs/dcache.c b/fs/dcache.c
index 6ebccba33336..71a8e943a0fa 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -3139,7 +3139,7 @@ static void __init dcache_init(void)
 	 * of the dcache.
 	 */
 	dentry_cache = KMEM_CACHE_USERCOPY(dentry,
-		SLAB_RECLAIM_ACCOUNT|SLAB_PANIC|SLAB_MEM_SPREAD|SLAB_ACCOUNT,
+		SLAB_RECLAIM_ACCOUNT|SLAB_PANIC|SLAB_ACCOUNT,
 		d_iname);
 
 	/* Hash may have been set up in dcache_init_early */
diff --git a/fs/inode.c b/fs/inode.c
index 6d0d54230363..d2e8e3884b36 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -2286,7 +2286,7 @@ void __init inode_init(void)
 					 sizeof(struct inode),
 					 0,
 					 (SLAB_RECLAIM_ACCOUNT|SLAB_PANIC|
-					 SLAB_MEM_SPREAD|SLAB_ACCOUNT),
+					 SLAB_ACCOUNT),
 					 init_once);
 
 	/* Hash may have been set up in inode_init_early */
diff --git a/fs/mbcache.c b/fs/mbcache.c
index fe2624e17253..e60a840999aa 100644
--- a/fs/mbcache.c
+++ b/fs/mbcache.c
@@ -426,8 +426,7 @@ EXPORT_SYMBOL(mb_cache_destroy);
 
 static int __init mbcache_init(void)
 {
-	mb_entry_cache = KMEM_CACHE(mb_cache_entry,
-					 SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD);
+	mb_entry_cache = KMEM_CACHE(mb_cache_entry, SLAB_RECLAIM_ACCOUNT);
 	if (!mb_entry_cache)
 		return -ENOMEM;
 	return 0;
-- 
2.40.1