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coredump: kill mm->core_done

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Now that we have core_state->dumper list we can use it to wake up the
sub-threads waiting for the coredump completion.

This uglifies the code and .text grows by 47 bytes, but otoh mm_struct
lessens by sizeof(struct completion).  Also, with this change we can
decouple exit_mm() from the coredumping code.

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 01:47:46 -07:00 • committed by Linus Torvalds
parent 182c515fd2
commit a94e2d408e
3 changed files with 30 additions and 7 deletions
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4
include/linux/mm_types.h
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@ -229,9 +229,7 @@ struct mm_struct {
unsigned long flags; /* Must use atomic bitops to access the bits */
/* coredumping support */
struct core_state *core_state;
struct completion core_done;
struct core_state *core_state; /* coredumping support */
/* aio bits */
rwlock_t ioctx_list_lock; /* aio lock */