diff options
| author | Andrea Arcangeli <andrea@suse.de> | 2005-02-01 16:33:26 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-02-01 16:33:26 -0800 |
| commit | 86a4c6d9e2e43796bb362debd3f73c0e3b198efa (patch) | |
| tree | edcd7feaf82617154dc511f0d8d174ccca1df782 /include/linux | |
| parent | 96fa06f455360ce8855350457a3e599ba41637a7 (diff) | |
[PATCH] mm: fix several oom killer bugs
Fix several oom killer bugs, most important avoid spurious oom kills
badness algorithm tweaked by Thomas Gleixner to deal with fork bombs
This is the core of the oom-killer fixes I developed partly taking
the idea from Thomas's patches of getting feedback from the exit
path, plus I moved the oom killer into page_alloc.c as it should to
be able to check the watermarks before killing more stuff. This
also tweaks the badness to take thread bombs more into account (that
change to badness is from Thomas, from my part I'd rather rewrite
badness from scratch instead, but that's an orthgonal issue ;).
With this applied the oom killer is very sane, no more 5 sec waits
and suprious oom kills.
Signed-off-by: Andrea Arcangeli <andrea@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/sched.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 1fa591147d9f..c34c9671b030 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -615,6 +615,11 @@ struct task_struct { struct key *thread_keyring; /* keyring private to this thread */ #endif /* + * All archs should support atomic ops with + * 1 byte granularity. + */ + unsigned char memdie; +/* * Must be changed atomically so it shouldn't be * be a shareable bitflag. */ @@ -736,8 +741,7 @@ do { if (atomic_dec_and_test(&(tsk)->usage)) __put_task_struct(tsk); } while(0) #define PF_DUMPCORE 0x00000200 /* dumped core */ #define PF_SIGNALED 0x00000400 /* killed by a signal */ #define PF_MEMALLOC 0x00000800 /* Allocating memory */ -#define PF_MEMDIE 0x00001000 /* Killed for out-of-memory */ -#define PF_FLUSHER 0x00002000 /* responsible for disk writeback */ +#define PF_FLUSHER 0x00001000 /* responsible for disk writeback */ #define PF_FREEZE 0x00004000 /* this task is being frozen for suspend now */ #define PF_NOFREEZE 0x00008000 /* this thread should not be frozen */ |