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| author |   Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> | 2016-05-23 16:23:57 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-23 17:04:14 -0700 |
| commit | c96fc2d85f4a827e3bb2abe7de2394a1fb8a0fe7 (patch) | |
| tree | 2124efba440b82628353672cbcdf377d3fb35381 /include/linux/types.h | |
| parent | wait: allow sys_waitid() to accept __WNOTHREAD/__WCLONE/__WALL (diff) | |
| download | wireguard-linux-c96fc2d85f4a827e3bb2abe7de2394a1fb8a0fe7.tar.xz wireguard-linux-c96fc2d85f4a827e3bb2abe7de2394a1fb8a0fe7.zip | |
signal: make oom_flags a bool
Currently the size of "struct signal_struct"->oom_flags member is
sizeof(unsigned) bytes, but only one flag OOM_FLAG_ORIGIN which is
updated by current thread is defined. We can convert OOM_FLAG_ORIGIN
into a bool, and reuse the saved bytes for updating from the OOM killer
and/or the OOM reaper thread.
By the way, do we care about a race window between run_store() and
swapoff() because it would be theoretically possible that two threads
sharing the "struct signal_struct" concurrently call respective
functions? If we care, we can make oom_flags an atomic_t.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Hugh Dickins <hughd@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/types.h')
| -rw-r--r-- | include/linux/types.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/types.h b/include/linux/types.h index 70dd3dfde631..baf718324f4a 100644 --- a/include/linux/types.h +++ b/include/linux/types.h @@ -156,7 +156,6 @@ typedef u32 dma_addr_t; typedef unsigned __bitwise__ gfp_t; typedef unsigned __bitwise__ fmode_t; -typedef unsigned __bitwise__ oom_flags_t; #ifdef CONFIG_PHYS_ADDR_T_64BIT typedef u64 phys_addr_t; |