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| author | Michal Hocko <mhocko@suse.com> | 2017-02-22 15:46:16 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-22 16:41:30 -0800 |
| commit | 9af744d743170b5f5ef70031dea8d772d166ab28 (patch) | |
| tree | 87290ffc304288352c66bc9afda0d4214403862c /include/linux/mm.h | |
| parent | 6d23f8a5d432337aa2590ea8fd5eee8b0bc28eee (diff) | |
| download | linux-9af744d743170b5f5ef70031dea8d772d166ab28.tar.gz linux-9af744d743170b5f5ef70031dea8d772d166ab28.tar.bz2 linux-9af744d743170b5f5ef70031dea8d772d166ab28.zip | |
lib/show_mem.c: teach show_mem to work with the given nodemask
show_mem() allows to filter out node specific data which is irrelevant
to the allocation request via SHOW_MEM_FILTER_NODES. The filtering is
done in skip_free_areas_node which skips all nodes which are not in the
mems_allowed of the current process. This works most of the time as
expected because the nodemask shouldn't be outside of the allocating
task but there are some exceptions. E.g. memory hotplug might want to
request allocations from outside of the allowed nodes (see
new_node_page).
Get rid of this hardcoded behavior and push the allocation mask down the
show_mem path and use it instead of cpuset_current_mems_allowed. NULL
nodemask is interpreted as cpuset_current_mems_allowed.
[akpm@linux-foundation.org: coding-style fixes]
Link: http://lkml.kernel.org/r/20170117091543.25850-5-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 28b6c3f8a7f3..8a67cae5a07c 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1152,8 +1152,7 @@ extern void pagefault_out_of_memory(void); */ #define SHOW_MEM_FILTER_NODES (0x0001u) /* disallowed nodes */ -extern void show_free_areas(unsigned int flags); -extern bool skip_free_areas_node(unsigned int flags, int nid); +extern void show_free_areas(unsigned int flags, nodemask_t *nodemask); int shmem_zero_setup(struct vm_area_struct *); #ifdef CONFIG_SHMEM @@ -1934,7 +1933,7 @@ extern void setup_per_zone_wmarks(void); extern int __meminit init_per_zone_wmark_min(void); extern void mem_init(void); extern void __init mmap_init(void); -extern void show_mem(unsigned int flags); +extern void show_mem(unsigned int flags, nodemask_t *nodemask); extern long si_mem_available(void); extern void si_meminfo(struct sysinfo * val); extern void si_meminfo_node(struct sysinfo *val, int nid); |