diff options
| author | Philipp Reisner <philipp.reisner@linbit.com> | 2011-07-05 15:38:59 +0200 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2012-11-08 16:57:50 +0100 |
| commit | cdfda633d235028e9b27381dedb65416409e8729 (patch) | |
| tree | c2b07a9b0f1bfb2bb04dd118df15a53ff2592ade /drivers/block/drbd/drbd_int.h | |
| parent | 2fcb8f307f6014de9e771799d9ec0f050802c0ac (diff) | |
drbd: detach from frozen backing device
* drbd-8.3:
documentation: Documented detach's --force and disk's --disk-timeout
drbd: Implemented the disk-timeout option
drbd: Force flag for the detach operation
drbd: Allow new IOs while the local disk in in FAILED state
drbd: Bitmap IO functions can not return prematurely if the disk breaks
drbd: Added a kref to bm_aio_ctx
drbd: Hold a reference to ldev while doing meta-data IO
drbd: Keep a reference to the bio until the completion handler finished
drbd: Implemented wait_until_done_or_disk_failure()
drbd: Replaced md_io_mutex by an atomic: md_io_in_use
drbd: moved md_io into mdev
drbd: Immediately allow completion of IOs, that wait for IO completions on a failed disk
drbd: Keep a reference to barrier acked requests
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 | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index 6035784f0de..4e582058a7c 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -780,8 +780,7 @@ struct drbd_backing_dev { }; struct drbd_md_io { - struct drbd_conf *mdev; - struct completion event; + unsigned int done; int error; }; @@ -852,6 +851,7 @@ struct drbd_tconn { /* is a resource from the config file */ struct drbd_tl_epoch *newest_tle; struct drbd_tl_epoch *oldest_tle; struct list_head out_of_sequence_requests; + struct list_head barrier_acked_requests; struct crypto_hash *cram_hmac_tfm; struct crypto_hash *integrity_tfm; /* checksums we compute, updates protected by tconn->data->mutex */ @@ -978,7 +978,8 @@ struct drbd_conf { atomic_t pp_in_use_by_net; /* sendpage()d, still referenced by tcp */ wait_queue_head_t ee_wait; struct page *md_io_page; /* one page buffer for md_io */ - struct mutex md_io_mutex; /* protects the md_io_buffer */ + struct drbd_md_io md_io; + 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 */ @@ -1424,9 +1425,12 @@ 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); extern void drbd_ov_out_of_sync_found(struct drbd_conf *, sector_t, int); +extern void wait_until_done_or_disk_failure(struct drbd_conf *mdev, unsigned int *done); extern void drbd_rs_controller_reset(struct drbd_conf *mdev); static inline void ov_out_of_sync_print(struct drbd_conf *mdev) @@ -2151,12 +2155,12 @@ static inline int drbd_state_is_stable(struct drbd_conf *mdev) case D_OUTDATED: case D_CONSISTENT: case D_UP_TO_DATE: + case D_FAILED: /* disk state is stable as well. */ break; /* no new io accepted during transitional states */ case D_ATTACHING: - case D_FAILED: case D_NEGOTIATING: case D_UNKNOWN: case D_MASK: |