The patch titled
Subject: mm/zonelist: enumerate zonelists array index
has been added to the -mm tree. Its filename is
mm-zonelist-enumerate-zonelists-array-index.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-zonelist-enumerate-zonelists-array-index.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-zonelist-enumerate-zonelists-array-index.patch
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From: Yaowei Bai <baiyaowei@xxxxxxxxxxxxxxxxxxxx>
Subject: mm/zonelist: enumerate zonelists array index
Hardcoding index to zonelists array in gfp_zonelist() is not a good idea,
let's enumerate it to improve readability.
No functional change.
Signed-off-by: Yaowei Bai <baiyaowei@xxxxxxxxxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/gfp.h | 4 ++--
include/linux/mmzone.h | 20 +++++++++-----------
2 files changed, 11 insertions(+), 13 deletions(-)
diff -puN include/linux/gfp.h~mm-zonelist-enumerate-zonelists-array-index include/linux/gfp.h
--- a/include/linux/gfp.h~mm-zonelist-enumerate-zonelists-array-index
+++ a/include/linux/gfp.h
@@ -385,9 +385,9 @@ static inline enum zone_type gfp_zone(gf
static inline int gfp_zonelist(gfp_t flags)
{
if (IS_ENABLED(CONFIG_NUMA) && unlikely(flags & __GFP_THISNODE))
- return 1;
+ return ZONELIST_NOFALLBACK;
- return 0;
+ return ZONELIST_FALLBACK;
}
/*
diff -puN include/linux/mmzone.h~mm-zonelist-enumerate-zonelists-array-index include/linux/mmzone.h
--- a/include/linux/mmzone.h~mm-zonelist-enumerate-zonelists-array-index
+++ a/include/linux/mmzone.h
@@ -571,19 +571,17 @@ static inline bool zone_is_empty(struct
/* Maximum number of zones on a zonelist */
#define MAX_ZONES_PER_ZONELIST (MAX_NUMNODES * MAX_NR_ZONES)
+enum {
+ ZONELIST_FALLBACK, /* zonelist with fallback */
#ifdef CONFIG_NUMA
-
-/*
- * The NUMA zonelists are doubled because we need zonelists that restrict the
- * allocations to a single node for __GFP_THISNODE.
- *
- * [0] : Zonelist with fallback
- * [1] : No fallback (__GFP_THISNODE)
- */
-#define MAX_ZONELISTS 2
-#else
-#define MAX_ZONELISTS 1
+ /*
+ * The NUMA zonelists are doubled because we need zonelists that restrict
+ * the allocations to a single node for __GFP_THISNODE.
+ */
+ ZONELIST_NOFALLBACK, /* zonelist without fallback (__GFP_THISNODE) */
#endif
+ MAX_ZONELISTS
+};
/*
* This struct contains information about a zone in a zonelist. It is stored
_
Patches currently in -mm which might be from baiyaowei@xxxxxxxxxxxxxxxxxxxx are
mm-hugetlb-is_file_hugepages-can-be-boolean.patch
mm-memblock-memblock_is_memory-reserved-can-be-boolean.patch
mm-lru-remove-unused-is_unevictable_lru-function.patch
mm-zonelist-enumerate-zonelists-array-index.patch
fs-statc-drop-the-last-new_valid_dev-check.patch
include-linux-kdev_th-remove-new_valid_dev.patch
ipc-shm-is_file_shm_hugepages-can-be-boolean.patch
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