linux-kernel - [PATCH -mmotm 3/5] page_cgroup: introduce file cache flags

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1268609202-15581-4-git-send-email-arighi@develer.com>
Date:	Mon, 15 Mar 2010 00:26:40 +0100
From:	Andrea Righi <arighi@...eler.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Daisuke Nishimura <nishimura@....nes.nec.co.jp>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>
Cc:	Vivek Goyal <vgoyal@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Trond Myklebust <trond.myklebust@....uio.no>,
	Suleiman Souhlal <suleiman@...gle.com>,
	Greg Thelen <gthelen@...gle.com>,
	"Kirill A. Shutemov" <kirill@...temov.name>,
	Andrew Morton <akpm@...ux-foundation.org>,
	containers@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Andrea Righi <arighi@...eler.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: [PATCH -mmotm 3/5] page_cgroup: introduce file cache flags

Introduce page_cgroup flags to keep track of file cache pages.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Signed-off-by: Andrea Righi <arighi@...eler.com>
---
 include/linux/page_cgroup.h |   22 +++++++++++++++++++++-
 1 files changed, 21 insertions(+), 1 deletions(-)

diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h
index bf9a913..65247e4 100644
--- a/include/linux/page_cgroup.h
+++ b/include/linux/page_cgroup.h
@@ -40,7 +40,11 @@ enum {
 	PCG_USED, /* this object is in use. */
 	PCG_ACCT_LRU, /* page has been accounted for */
 	/* for cache-status accounting */
-	PCG_FILE_MAPPED,
+	PCG_FILE_MAPPED, /* page is accounted as file rss*/
+	PCG_FILE_DIRTY, /* page is dirty */
+	PCG_FILE_WRITEBACK, /* page is being written back to disk */
+	PCG_FILE_WRITEBACK_TEMP, /* page is used as temporary buffer for FUSE */
+	PCG_FILE_UNSTABLE_NFS, /* NFS page not yet committed to the server */
 };
 
 #define TESTPCGFLAG(uname, lname)			\
@@ -83,6 +87,22 @@ TESTPCGFLAG(FileMapped, FILE_MAPPED)
 SETPCGFLAG(FileMapped, FILE_MAPPED)
 CLEARPCGFLAG(FileMapped, FILE_MAPPED)
 
+TESTPCGFLAG(FileDirty, FILE_DIRTY)
+SETPCGFLAG(FileDirty, FILE_DIRTY)
+CLEARPCGFLAG(FileDirty, FILE_DIRTY)
+
+TESTPCGFLAG(FileWriteback, FILE_WRITEBACK)
+SETPCGFLAG(FileWriteback, FILE_WRITEBACK)
+CLEARPCGFLAG(FileWriteback, FILE_WRITEBACK)
+
+TESTPCGFLAG(FileWritebackTemp, FILE_WRITEBACK_TEMP)
+SETPCGFLAG(FileWritebackTemp, FILE_WRITEBACK_TEMP)
+CLEARPCGFLAG(FileWritebackTemp, FILE_WRITEBACK_TEMP)
+
+TESTPCGFLAG(FileUnstableNFS, FILE_UNSTABLE_NFS)
+SETPCGFLAG(FileUnstableNFS, FILE_UNSTABLE_NFS)
+CLEARPCGFLAG(FileUnstableNFS, FILE_UNSTABLE_NFS)
+
 static inline int page_cgroup_nid(struct page_cgroup *pc)
 {
 	return page_to_nid(pc->page);
-- 
1.6.3.3

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/