| commit | c8c06efa8b552608493b7066c234cfa82c47fcea | [log] [tgz] |
|---|---|---|
| author | Davidlohr Bueso <[email protected]> | Fri Dec 12 16:54:24 2014 -0800 |
| committer | Linus Torvalds <[email protected]> | Sat Dec 13 12:42:45 2014 -0800 |
| tree | 7e206c669149766fb5a77a3ef85cdd4fac63be78 | |
| parent | 83cde9e8ba95d180eaefefe834958fbf7008cf39 [diff] |
mm: convert i_mmap_mutex to rwsem The i_mmap_mutex is a close cousin of the anon vma lock, both protecting similar data, one for file backed pages and the other for anon memory. To this end, this lock can also be a rwsem. In addition, there are some important opportunities to share the lock when there are no tree modifications. This conversion is straightforward. For now, all users take the write lock. [[email protected]: update fremap.c] Signed-off-by: Davidlohr Bueso <[email protected]> Reviewed-by: Rik van Riel <[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: Srikar Dronamraju <[email protected]> Acked-by: Mel Gorman <[email protected]> Signed-off-by: Stephen Rothwell <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>