diff options
| author | Davidlohr Bueso <[email protected]> | 2014-12-12 16:54:36 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2014-12-13 12:42:45 -0800 |
| commit | d28eb9c861f41aa2af4cfcc5eeeddff42b13d31e (patch) | |
| tree | 7d87b9e9582ca25b5041534fdd43800ceb0be738 | |
| parent | 874bfcaf79e39135cd31e1cfc9265cf5222d1ec3 (diff) | |
mm/memory-failure: share the i_mmap_rwsem
No brainer conversion: collect_procs_file() only schedules a process for
later kill, share the lock, similarly to the anon vma variant.
Signed-off-by: Davidlohr Bueso <[email protected]>
Acked-by: "Kirill A. Shutemov" <[email protected]>
Acked-by: Hugh Dickins <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Acked-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Srikar Dronamraju <[email protected]>
Acked-by: Mel Gorman <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | mm/memory-failure.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 5e2b26dab8dc..6b94969d91c5 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -466,7 +466,7 @@ static void collect_procs_file(struct page *page, struct list_head *to_kill, struct task_struct *tsk; struct address_space *mapping = page->mapping; - i_mmap_lock_write(mapping); + i_mmap_lock_read(mapping); read_lock(&tasklist_lock); for_each_process(tsk) { pgoff_t pgoff = page_to_pgoff(page); @@ -488,7 +488,7 @@ static void collect_procs_file(struct page *page, struct list_head *to_kill, } } read_unlock(&tasklist_lock); - i_mmap_unlock_write(mapping); + i_mmap_unlock_read(mapping); } /* |