Skip to main content

Browse the archive

Staging
v0.5.1
https://github.com/torvalds/linux
02 December 2023, 22:23:51 UTC
Revision 61469f1d51777fc3b6d8d70da8373ee77ee13349 authored by Hugh Dickins on 04 March 2008, 22:29:04 UTC, committed by Linus Torvalds on 05 March 2008, 00:35:14 UTC 
memcg: when do_swap's do_wp_page fails
 
Don't uncharge when do_swap_page's call to do_wp_page fails: the page which
was charged for is there in the pagetable, and will be correctly uncharged
when that area is unmapped - it was only its COWing which failed.

And while we're here, remove earlier XXX comment: yes, OR in do_wp_page's
return value (maybe VM_FAULT_WRITE) with do_swap_page's there; but if it
fails, mask out success bits, which might confuse some arches e.g.  sparc.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: David Rientjes <rientjes@google.com>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Hirokazu Takahashi <taka@valinux.co.jp>
Cc: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Cc: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 6dbf6d3
History
Tip revision: 61469f1d51777fc3b6d8d70da8373ee77ee13349 authored by Hugh Dickins on 04 March 2008, 22:29:04 UTC
memcg: when do_swap's do_wp_page fails
Tip revision: 61469f1
File Mode Size
Documentation
arch
block
crypto
drivers
fs
include
init
ipc
kernel
lib
mm
net
samples
scripts
security
sound
usr
virt
.gitignore -rw-r--r-- 644 bytes
.mailmap -rw-r--r-- 3.6 KB
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 90.4 KB
Kbuild -rw-r--r-- 1.6 KB
MAINTAINERS -rw-r--r-- 95.1 KB
Makefile -rw-r--r-- 52.8 KB
README -rw-r--r-- 16.5 KB
REPORTING-BUGS -rw-r--r-- 3.1 KB

README

back to top