LU-12477 ldiskfs: drop SUSE kernel 4.4 and earlier

[fs/lustre-release.git] / lustre / kernel_patches / patches / bh_lru_size_increase.patch

diff --git a/lustre/kernel_patches/patches/bh_lru_size_increase.patch b/lustre/kernel_patches/patches/bh_lru_size_increase.patch
deleted file mode 100644 (file)
index 6cd1a8d..0000000
--- a/lustre/kernel_patches/patches/bh_lru_size_increase.patch
+++ /dev/null
@@ -1,41 +0,0 @@
-Increase the buffer-head per-CPU LRU size to allow efficient
-filesystem operations that access many blocks for each transaction.
-For example, creating a file in a large ext4 directory with quota
-enabled will access multiple buffer heads and will overflow the LRU
-at the default 8-block LRU size:
-
-* parent directory inode table block (ctime, nlinks for subdirs)
-* new inode bitmap
-* inode table block
-* 2 quota blocks
-* directory leaf block (not reused, but pollutes one cache entry)
-* 2 levels htree blocks (only one is reused, other pollutes cache)
-* 2 levels indirect/index blocks (only one is reused)
-
-The buffer-head per-CPU LRU size is raised to 16, as it shows in
-metadata performance benchmarks up to 10% gain for create,
-4% for lookup and 7% for destroy.
-
-Signed-off-by: Liang Zhen <liang.zhen@intel.com>
-Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
-Signed-off-by: Sebastien Buisson <sebastien.buisson@bull.net>
----
- fs/buffer.c |    2 +-
- 1 files changed, 1 insertions(+), 1 deletions(-)
-
-diff --git a/fs/buffer.c b/fs/buffer.c
-index 6024877..a6468f2 100644
---- a/fs/buffer.c
-+++ b/fs/buffer.c
-@@ -1256,7 +1256,7 @@ static struct buffer_head *__bread_slow(struct buffer_head *bh)
-  * a local interrupt disable for that.
-  */
- 
--#define BH_LRU_SIZE   8
-+#define BH_LRU_SIZE   16
- 
- struct bh_lru {
-       struct buffer_head *bhs[BH_LRU_SIZE];
--- 
-1.7.1
-