[PATCH 1/9] memcg: add page_cgroup flags for dirty page tracking
From: Fengguang Wu <hidden>
Date: 2012-02-28 14:58:37
Also in:
lkml
From: Greg Thelen <redacted> Add additional flags to page_cgroup to track dirty pages within a mem_cgroup. Signed-off-by: KAMEZAWA Hiroyuki <redacted> Signed-off-by: Andrea Righi <redacted> Signed-off-by: Greg Thelen <redacted> Reviewed-by: Minchan Kim <redacted> Signed-off-by: Fengguang Wu <redacted> --- include/linux/page_cgroup.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+)
--- linux.orig/include/linux/page_cgroup.h 2012-02-19 10:53:14.000000000 +0800
+++ linux/include/linux/page_cgroup.h 2012-02-19 10:53:16.000000000 +0800@@ -10,6 +10,9 @@ enum { /* flags for mem_cgroup and file and I/O status */ PCG_MOVE_LOCK, /* For race between move_account v.s. following bits */ PCG_FILE_MAPPED, /* page is accounted as "mapped" */ + PCG_FILE_DIRTY, /* page is dirty */ + PCG_FILE_WRITEBACK, /* page is under writeback */ + PCG_FILE_UNSTABLE_NFS, /* page is NFS unstable */ __NR_PCG_FLAGS, };
@@ -64,6 +67,10 @@ static inline void ClearPageCgroup##unam static inline int TestClearPageCgroup##uname(struct page_cgroup *pc) \ { return test_and_clear_bit(PCG_##lname, &pc->flags); } +#define TESTSETPCGFLAG(uname, lname) \ +static inline int TestSetPageCgroup##uname(struct page_cgroup *pc) \ + { return test_and_set_bit(PCG_##lname, &pc->flags); } + /* Cache flag is set only once (at allocation) */ TESTPCGFLAG(Cache, CACHE) CLEARPCGFLAG(Cache, CACHE)
@@ -77,6 +84,22 @@ SETPCGFLAG(FileMapped, FILE_MAPPED) CLEARPCGFLAG(FileMapped, FILE_MAPPED) TESTPCGFLAG(FileMapped, FILE_MAPPED) +SETPCGFLAG(FileDirty, FILE_DIRTY) +CLEARPCGFLAG(FileDirty, FILE_DIRTY) +TESTPCGFLAG(FileDirty, FILE_DIRTY) +TESTCLEARPCGFLAG(FileDirty, FILE_DIRTY) +TESTSETPCGFLAG(FileDirty, FILE_DIRTY) + +SETPCGFLAG(FileWriteback, FILE_WRITEBACK) +CLEARPCGFLAG(FileWriteback, FILE_WRITEBACK) +TESTPCGFLAG(FileWriteback, FILE_WRITEBACK) + +SETPCGFLAG(FileUnstableNFS, FILE_UNSTABLE_NFS) +CLEARPCGFLAG(FileUnstableNFS, FILE_UNSTABLE_NFS) +TESTPCGFLAG(FileUnstableNFS, FILE_UNSTABLE_NFS) +TESTCLEARPCGFLAG(FileUnstableNFS, FILE_UNSTABLE_NFS) +TESTSETPCGFLAG(FileUnstableNFS, FILE_UNSTABLE_NFS) + SETPCGFLAG(Migration, MIGRATION) CLEARPCGFLAG(Migration, MIGRATION) TESTPCGFLAG(Migration, MIGRATION) --
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