[Devel] [PATCH RHEL7 COMMIT] Revert "mm, fs: make vfs_cache_min_ratio=0 by default"

Konstantin Khorenko khorenko at virtuozzo.com
Thu Oct 26 18:16:35 MSK 2017


The commit is pushed to "branch-rh7-3.10.0-693.1.1.vz7.37.x-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-693.1.1.vz7.37.19
------>
commit a7a195e77ed661d8d92d81fda7e4f9e47e9df3f7
Author: Konstantin Khorenko <khorenko at virtuozzo.com>
Date:   Thu Oct 26 18:13:02 2017 +0300

    Revert "mm,fs: make vfs_cache_min_ratio=0 by default"
    
    This reverts commit 592e27fa3be43f9a54b1d24751da764dc332591e.
    
    It was shown this tweak with 2% dcache savings does increase
    the performance, so return the old default value back.
    
    https://jira.sw.ru/browse/PSBM-75862
    
    Signed-off-by: Konstantin Khorenko <khorenko at virtuozzo.com>
---
 fs/dcache.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/dcache.c b/fs/dcache.c
index ce8e24f..2cb018a 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -86,7 +86,7 @@
 int sysctl_vfs_cache_pressure __read_mostly = 100;
 EXPORT_SYMBOL_GPL(sysctl_vfs_cache_pressure);
 
-int sysctl_vfs_cache_min_ratio __read_mostly = 0;
+int sysctl_vfs_cache_min_ratio __read_mostly = 2;
 
 __cacheline_aligned_in_smp DEFINE_SEQLOCK(rename_lock);
 


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