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[PATCH 2/8] Add container pointer on struct page [message #13732 is a reply to message #13730]

Mon, 04 June 2007 13:26

Pavel Emelianov
Messages: 1149
Registered: September 2006

Senior Member

Each page is supposed to have an owner - the container
that touched the page first. The owner stays alive during
the page lifetime even if the task that touched the page
dies or moves to another container.

This ownership is the forerunner for the "fair" page sharing
accounting, in which page has as may owners as it is really
used by.

Page ownership getter/setter are done as static inline function.

Signed-off-by: Pavel Emelianov <xemul@openvz.org>

---

diff -upr linux-2.6.22-rc2-mm1.orig/include/linux/mm.h linux-2.6.22-rc2-mm1-2/include/linux/mm.h
--- linux-2.6.22-rc2-mm1.orig/include/linux/mm.h 2007-05-30 12:32:35.000000000 +0400
+++ linux-2.6.22-rc2-mm1-2/include/linux/mm.h 2007-06-01 16:35:15.000000000 +0400
@@ -249,6 +249,30 @@ struct vm_operations_struct {

struct mmu_gather;
struct inode;
+struct page_container;
+
+#ifdef CONFIG_RSS_CONTAINER
+static inline struct page_container *page_container(struct page *pg)
+{
+ return pg->rss_container;
+}
+
+static inline void set_page_container(struct page *pg,
+ struct page_container *container)
+{
+ pg->rss_container = container;
+}
+#else
+static inline struct page_container *page_container(struct page *pg)
+{
+ return NULL;
+}
+
+static inline void set_page_container(struct page *pg,
+ struct page_container *container)
+{
+}
+#endif

#define page_private(page) ((page)->private)
#define set_page_private(page, v) ((page)->private = (v))
diff -upr linux-2.6.22-rc2-mm1.orig/include/linux/mm_types.h linux-2.6.22-rc2-mm1-2/include/linux/mm_types.h
--- linux-2.6.22-rc2-mm1.orig/include/linux/mm_types.h 2007-05-30 12:32:35.000000000 +0400
+++ linux-2.6.22-rc2-mm1-2/include/linux/mm_types.h 2007-06-01 16:35:13.000000000 +0400
@@ -83,6 +83,9 @@ struct page {
unsigned int gfp_mask;
unsigned long trace[8];
#endif
+#ifdef CONFIG_RSS_CONTAINER
+ struct page_container *rss_container;
+#endif
};

#endif /* _LINUX_MM_TYPES_H */

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[Message index]

		[PATCH 0/8] RSS controller based on process containers (v3.1) By: Pavel Emelianov on Mon, 04 June 2007 13:21
		[PATCH 1/8] Resource counters By: Pavel Emelianov on Mon, 04 June 2007 13:24
		[PATCH 2/8] Add container pointer on struct page By: Pavel Emelianov on Mon, 04 June 2007 13:26
		[PATCH 3/8] Add container pointer on mm_struct By: Pavel Emelianov on Mon, 04 June 2007 13:29
		[PATCH 4/8] Scanner changes needed to implement per-container scanner By: Pavel Emelianov on Mon, 04 June 2007 13:31
		[PATCH 5/8] RSS container core By: Pavel Emelianov on Mon, 04 June 2007 13:35
		[PATCH 6/8] Per container OOM killer By: Pavel Emelianov on Mon, 04 June 2007 13:40
		[PATCH 7/8] Per-container pages reclamation By: Pavel Emelianov on Mon, 04 June 2007 13:41
		[PATCH 8/8] RSS accounting hooks over the code By: Pavel Emelianov on Mon, 04 June 2007 13:45
		Re: [PATCH 0/8] RSS controller based on process containers (v3.1) By: Herbert Poetzl on Fri, 08 June 2007 12:03
		Re: [PATCH 0/8] RSS controller based on process containers (v3.1) By: Pavel Emelianov on Fri, 08 June 2007 12:39
		Re: [PATCH 0/8] RSS controller based on process containers (v3.1) By: Herbert Poetzl on Fri, 08 June 2007 15:37
		Re: [PATCH 0/8] RSS controller based on process containers (v3.1) By: Balbir Singh on Fri, 08 June 2007 17:07
		Re: [PATCH 0/8] RSS controller based on process containers (v3.1) By: Vaidyanathan Srinivas on Fri, 08 June 2007 17:44

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