leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

coredump: move mm->core_waiters into struct core_state

Browse Source 
Move mm->core_waiters into "struct core_state" allocated on stack.  This
shrinks mm_struct a little bit and allows further changes.

This patch mostly does s/core_waiters/core_state.  The only essential
change is that coredump_wait() must clear mm->core_state before return.

The coredump_wait()'s path is uglified and .text grows by 30 bytes, this
is fixed by the next patch.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Oleg Nesterov
2008-07-25 01:47:41 -07:00
committed by Linus Torvalds
parent 32ecb1f26d
commit 999d9fc167
5 changed files with 19 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/signal.c
View File

@@ -1480,10 +1480,10 @@ static inline int may_ptrace_stop(void)
* is a deadlock situation, and pointless because our tracer
* is dead so don't allow us to stop.
* If SIGKILL was already sent before the caller unlocked
* ->siglock we must see ->core_waiters != 0. Otherwise it
* ->siglock we must see ->core_state != NULL. Otherwise it
* is safe to enter schedule().
*/
if (unlikely(current->mm->core_waiters) &&
if (unlikely(current->mm->core_state) &&
unlikely(current->mm == current->parent->mm))
return 0;