diff options
| author | Minchan Kim <minchan@kernel.org> | 2014-01-30 15:46:03 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-30 16:56:55 -0800 |
| commit | 92967471b67163bb1654e9b7fe99449ab70a4aaa (patch) | |
| tree | 440e10b86af31f9752585f2472a382d0b36611d4 /mm/interval_tree.c | |
| parent | deb0bdeb2f3d6b81d37fc778316dae46b6daab56 (diff) | |
zram: introduce zram->tb_lock
Currently, the zram table is protected by zram->lock but it's rather
coarse-grained lock and it makes hard for scalibility.
Let's use own rwlock instead of depending on zram->lock. This patch
adds new locking so obviously, it would make slow but this patch is just
prepartion for removing coarse-grained rw_semaphore(ie, zram->lock)
which is hurdle about zram scalability.
Final patch in this patchset series will remove the lock from read-path
and change rw_semaphore with mutex in write path. With bonus, we could
drop pending slot free mess in next patch.
Signed-off-by: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Tested-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Jerome Marchand <jmarchan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/interval_tree.c')
0 files changed, 0 insertions, 0 deletions