diff options
| author | Philipp Reisner <philipp.reisner@linbit.com> | 2011-06-27 11:51:46 +0200 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2012-05-09 10:22:31 +0200 |
| commit | e17117310b73ce6d2340ad46a539d3896a2d6de8 (patch) | |
| tree | 66fed6cc939a402f70a51fdebb3b27f1f629b0ea /drivers/block/drbd/drbd_int.h | |
| parent | cc94c65015022e7329e80e057e20848581d3f2a5 (diff) | |
drbd: Replaced md_io_mutex by an atomic: md_io_in_use
The new function drbd_md_get_buffer() aborts waiting for the buffer
in case the disk failes in the meantime.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers/block/drbd/drbd_int.h')
| -rw-r--r-- | drivers/block/drbd/drbd_int.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index 91e69ffd5566..55cae74911e8 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -1095,7 +1095,7 @@ struct drbd_conf { struct page *md_io_page; /* one page buffer for md_io */ struct page *md_io_tmpp; /* for logical_block_size != 512 */ struct drbd_md_io md_io; - struct mutex md_io_mutex; /* protects the md_io, md_io_page and md_io_tmpp */ + atomic_t md_io_in_use; /* protects the md_io, md_io_page and md_io_tmpp */ spinlock_t al_lock; wait_queue_head_t al_wait; struct lru_cache *act_log; /* activity log */ @@ -1537,8 +1537,10 @@ extern void resume_next_sg(struct drbd_conf *mdev); extern void suspend_other_sg(struct drbd_conf *mdev); extern int drbd_resync_finished(struct drbd_conf *mdev); /* maybe rather drbd_main.c ? */ +extern void *drbd_md_get_buffer(struct drbd_conf *mdev); +extern void drbd_md_put_buffer(struct drbd_conf *mdev); extern int drbd_md_sync_page_io(struct drbd_conf *mdev, - struct drbd_backing_dev *bdev, sector_t sector, int rw); + struct drbd_backing_dev *bdev, sector_t sector, int rw); extern void drbd_ov_oos_found(struct drbd_conf*, sector_t, int); extern void drbd_rs_controller_reset(struct drbd_conf *mdev); |