webadmin/bpfire
1
0
Fork 0
mirror of https://github.com/vincentmli/bpfire.git synced 2026-04-27 03:07:43 +02:00
Code Issues Packages Projects Releases Wiki Activity

Add a patch for speedup cache writeback.

Browse Source
This commit is contained in:
Arne Fitzenreiter
2010-10-16 12:12:31 +02:00
parent 54f4a62c06
commit 9d4e632291
3 changed files with 43 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
src/patches/linux-2.6-vmscan_remove_wait_on_page_writeback.patch Normal file
View File

@@ -0,0 +1,37 @@
--- linux-next.orig/mm/vmscan.c 2010-07-28 16:22:21.000000000 +0800
+++ linux-next/mm/vmscan.c 2010-07-28 16:23:35.000000000 +0800
@@ -324,8 +324,7 @@ typedef enum {
* pageout is called by shrink_page_list() for each dirty page.
* Calls ->writepage().
*/
-static pageout_t pageout(struct page *page, struct address_space *mapping,
- enum pageout_io sync_writeback)
+static pageout_t pageout(struct page *page, struct address_space *mapping)
{
/*
* If the page is dirty, only perform writeback if that write
@@ -384,14 +383,6 @@ static pageout_t pageout(struct page *pa
return PAGE_ACTIVATE;
}
- /*
- * Wait on writeback if requested to. This happens when
- * direct reclaiming a large contiguous area and the
- * first attempt to free a range of pages fails.
- */
- if (PageWriteback(page) && sync_writeback == PAGEOUT_IO_SYNC)
- wait_on_page_writeback(page);
-
if (!PageWriteback(page)) {
/* synchronous write or broken a_ops? */
ClearPageReclaim(page);
@@ -727,7 +718,7 @@ static unsigned long shrink_page_list(st
goto keep_locked;
/* Page is dirty, try to write it out here */
- switch (pageout(page, mapping, sync_writeback)) {
+ switch (pageout(page, mapping)) {
case PAGE_KEEP:
goto keep_locked;
case PAGE_ACTIVATE: