lkml.org 
[lkml]   [2013]   [Mar]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCHv2, RFC 01/30] block: implement add_bdi_stat()
Date
From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>

It's required for batched stats update.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
---
include/linux/backing-dev.h | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index 3504599..b05d961 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -167,6 +167,16 @@ static inline void __dec_bdi_stat(struct backing_dev_info *bdi,
__add_bdi_stat(bdi, item, -1);
}

+static inline void add_bdi_stat(struct backing_dev_info *bdi,
+ enum bdi_stat_item item, s64 amount)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ __add_bdi_stat(bdi, item, amount);
+ local_irq_restore(flags);
+}
+
static inline void dec_bdi_stat(struct backing_dev_info *bdi,
enum bdi_stat_item item)
{
--
1.7.10.4


\
 
 \ /
  Last update: 2013-03-14 19:41    [W:0.781 / U:0.200 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site