From: Dave Hansen <dave.hansen@linux.intel.com>
To: linux-kernel@vger.kernel.org
Cc: Dave Hansen <dave.hansen@linux.intel.com>,
ben.widawsky@intel.com, rientjes@google.com,
alex.shi@linux.alibaba.com, dwagner@suse.de, tobin@kernel.org,
cl@linux.com, akpm@linux-foundation.org, ying.huang@intel.com,
dan.j.williams@intel.com, cai@lca.pw
Subject: [RFC][PATCH 02/12] mm/vmscan: move RECLAIM* bits to uapi header
Date: Tue, 06 Oct 2020 13:51:08 -0700 [thread overview]
Message-ID: <20201006205108.ADF7B6F2@viggo.jf.intel.com> (raw)
In-Reply-To: <20201006205103.268F74A9@viggo.jf.intel.com>
From: Dave Hansen <dave.hansen@linux.intel.com>
It is currently not obvious that the RECLAIM_* bits are part of the
uapi since they are defined in vmscan.c. Move them to a uapi header
to make it obvious.
This should have no functional impact.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Ben Widawsky <ben.widawsky@intel.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Daniel Wagner <dwagner@suse.de>
Cc: "Tobin C. Harding" <tobin@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Qian Cai <cai@lca.pw>
Cc: Daniel Wagner <dwagner@suse.de>
--
Note: This is not cc'd to stable. It does not fix any bugs.
---
b/include/uapi/linux/mempolicy.h | 7 +++++++
b/mm/vmscan.c | 8 --------
2 files changed, 7 insertions(+), 8 deletions(-)
diff -puN include/uapi/linux/mempolicy.h~mm-vmscan-move-RECLAIM-bits-to-uapi include/uapi/linux/mempolicy.h
--- a/include/uapi/linux/mempolicy.h~mm-vmscan-move-RECLAIM-bits-to-uapi 2020-10-06 13:39:21.720818440 -0700
+++ b/include/uapi/linux/mempolicy.h 2020-10-06 13:39:21.726818440 -0700
@@ -62,5 +62,12 @@ enum {
#define MPOL_F_MOF (1 << 3) /* this policy wants migrate on fault */
#define MPOL_F_MORON (1 << 4) /* Migrate On protnone Reference On Node */
+/*
+ * These bit locations are exposed in the vm.zone_reclaim_mode sysctl
+ * ABI. New bits are OK, but existing bits can never change.
+ */
+#define RECLAIM_ZONE (1<<0) /* Run shrink_inactive_list on the zone */
+#define RECLAIM_WRITE (1<<1) /* Writeout pages during reclaim */
+#define RECLAIM_UNMAP (1<<2) /* Unmap pages during reclaim */
#endif /* _UAPI_LINUX_MEMPOLICY_H */
diff -puN mm/vmscan.c~mm-vmscan-move-RECLAIM-bits-to-uapi mm/vmscan.c
--- a/mm/vmscan.c~mm-vmscan-move-RECLAIM-bits-to-uapi 2020-10-06 13:39:21.722818440 -0700
+++ b/mm/vmscan.c 2020-10-06 13:39:21.727818440 -0700
@@ -4084,14 +4084,6 @@ module_init(kswapd_init)
int node_reclaim_mode __read_mostly;
/*
- * These bit locations are exposed in the vm.zone_reclaim_mode sysctl
- * ABI. New bits are OK, but existing bits can never change.
- */
-#define RECLAIM_ZONE (1<<0) /* Run shrink_inactive_list on the zone */
-#define RECLAIM_WRITE (1<<1) /* Writeout pages during reclaim */
-#define RECLAIM_UNMAP (1<<2) /* Unmap pages during reclaim */
-
-/*
* Priority for NODE_RECLAIM. This determines the fraction of pages
* of a node considered for each zone_reclaim. 4 scans 1/16th of
* a zone.
_
next prev parent reply other threads:[~2020-10-06 20:51 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-06 20:51 [RFC][PATCH 00/12] mm: tweak page cache migration Dave Hansen
2020-10-06 20:51 ` [RFC][PATCH 01/12] mm/vmscan: restore zone_reclaim_mode ABI Dave Hansen
2020-10-07 8:45 ` Christopher Lameter
2020-10-06 20:51 ` Dave Hansen [this message]
2020-10-07 8:45 ` [RFC][PATCH 02/12] mm/vmscan: move RECLAIM* bits to uapi header Christopher Lameter
2020-10-06 20:51 ` [RFC][PATCH 03/12] mm/vmscan: replace implicit RECLAIM_ZONE checks with explicit checks Dave Hansen
2020-10-07 8:47 ` Christopher Lameter
2020-10-06 20:51 ` [RFC][PATCH 04/12] mm/numa: node demotion data structure and lookup Dave Hansen
2020-10-06 20:51 ` [RFC][PATCH 05/12] mm/numa: automatically generate node migration order Dave Hansen
2020-10-06 20:51 ` [RFC][PATCH 06/12] mm/migrate: update migration order during on hotplug events Dave Hansen
2020-10-06 20:51 ` [RFC][PATCH 07/12] mm/migrate: make migrate_pages() return nr_succeeded Dave Hansen
2020-10-06 20:51 ` [RFC][PATCH 08/12] mm/migrate: demote pages during reclaim Dave Hansen
2020-10-06 20:51 ` [RFC][PATCH 09/12] mm/vmscan: add page demotion counter Dave Hansen
2020-10-06 20:51 ` [RFC][PATCH 10/12] mm/vmscan: Consider anonymous pages without swap Dave Hansen
2020-10-06 20:51 ` [RFC][PATCH 11/12] mm/vmscan: never demote for memcg reclaim Dave Hansen
2020-10-06 20:51 ` [RFC][PATCH 12/12] mm/migrate: new zone_reclaim_mode to enable reclaim migration Dave Hansen
2020-10-06 20:53 ` [RFC][PATCH 00/12] mm: tweak page cache migration Dave Hansen
2020-10-07 9:52 ` Michal Hocko
2020-10-07 9:55 ` David Hildenbrand
2020-10-07 15:52 ` Yang Shi
2020-10-07 15:58 ` Dave Hansen
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