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| author | zijun_hu | 2016-10-08 01:57:26 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2016-10-08 03:46:26 +0200 |
| commit | 252e5c6e2e5b4557599ef86ea5d02b0395e9056c (patch) | |
| tree | c77225eca104a771803fc1c23c62664e1ed8a889 /mm/memcontrol.c | |
| parent | mm: oom: deduplicate victim selection code for memcg and global oom (diff) | |
| download | kernel-qcow2-linux-252e5c6e2e5b4557599ef86ea5d02b0395e9056c.tar.gz kernel-qcow2-linux-252e5c6e2e5b4557599ef86ea5d02b0395e9056c.tar.xz kernel-qcow2-linux-252e5c6e2e5b4557599ef86ea5d02b0395e9056c.zip | |
mm/vmalloc.c: fix align value calculation error
It causes double align requirement for __get_vm_area_node() if parameter
size is power of 2 and VM_IOREMAP is set in parameter flags, for example
size=0x10000 -> fls_long(0x10000)=17 -> align=0x20000
get_count_order_long() is implemented and can be used instead of
fls_long() for fixing the bug, for example size=0x10000 ->
get_count_order_long(0x10000)=16 -> align=0x10000
[akpm@linux-foundation.org: s/get_order_long()/get_count_order_long()/]
[zijun_hu@zoho.com: fixes]
Link: http://lkml.kernel.org/r/57AABC8B.1040409@zoho.com
[akpm@linux-foundation.org: locate get_count_order_long() next to get_count_order()]
[akpm@linux-foundation.org: move get_count_order[_long] definitions to pick up fls_long()]
[zijun_hu@htc.com: move out get_count_order[_long]() from __KERNEL__ scope]
Link: http://lkml.kernel.org/r/57B2C4CE.80303@zoho.com
Link: http://lkml.kernel.org/r/fc045ecf-20fa-0722-b3ac-9a6140488fad@zoho.com
Signed-off-by: zijun_hu <zijun_hu@htc.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: zijun_hu <zijun_hu@htc.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memcontrol.c')
0 files changed, 0 insertions, 0 deletions