linux-ext4 - [PATCH] ext4: group info caches set to SLAB_MEM

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1321742924-3189-1-git-send-email-linkinjeon@gmail.com>
Date:	Sun, 20 Nov 2011 07:48:44 +0900
From:	Namjae Jeon <linkinjeon@...il.com>
To:	tytso@....edu
Cc:	linux-kernel@...r.kernel.org, linux-ext4@...r.kernel.org,
	Namjae Jeon <linkinjeon@...il.com>,
	Amit Sahrawat <amit.sahrawat83@...il.com>
Subject: [PATCH] ext4: group info caches set to SLAB_MEM_SPREAD flags.

If group info caches set to SLAB_MEM_SPREAD flags, the allocation is spread evenly over all the memory nodes when using cpuset.
It is useful because group info caches are long lived.

Signed-off-by: Namjae Jeon <linkinjeon@...il.com>
Signed-off-by: Amit Sahrawat <amit.sahrawat83@...il.com>
---
 fs/ext4/mballoc.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index e2d8be8..7aacbbe 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2407,7 +2407,8 @@ static int ext4_groupinfo_create_slab(size_t size)
 				bb_counters[blocksize_bits + 2]);
 
 	cachep = kmem_cache_create(ext4_groupinfo_slab_names[cache_index],
-					slab_size, 0, SLAB_RECLAIM_ACCOUNT,
+					slab_size, 0, SLAB_RECLAIM_ACCOUNT |
+					SLAB_MEM_SPREAD,
 					NULL);
 
 	ext4_groupinfo_caches[cache_index] = cachep;
-- 
1.7.4.4

--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html