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| author | Philipp Reisner <philipp.reisner@linbit.com> | 2010-05-12 17:08:26 +0200 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2010-10-14 14:35:58 +0200 |
| commit | 11b58e73a3a3d1bbb582370d59f9b2c4d0136b42 (patch) | |
| tree | 9ca5b48e368da91f6cc1888440b6ea9ffe9a7e3f /drivers/block/drbd/drbd_req.h | |
| parent | 2a80699f807885d501f08a7006f6a56c1c937a6e (diff) | |
| download | kernel_samsung_smdk4412-11b58e73a3a3d1bbb582370d59f9b2c4d0136b42.zip kernel_samsung_smdk4412-11b58e73a3a3d1bbb582370d59f9b2c4d0136b42.tar.gz kernel_samsung_smdk4412-11b58e73a3a3d1bbb582370d59f9b2c4d0136b42.tar.bz2 | |
drbd: factored tl_restart() out of tl_clear().
If IO was frozen for a temporal network outage, resend the
content of the transfer-log into the newly established connection.
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_req.h')
| -rw-r--r-- | drivers/block/drbd/drbd_req.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/block/drbd/drbd_req.h b/drivers/block/drbd/drbd_req.h index db37c6e..1bcb855 100644 --- a/drivers/block/drbd/drbd_req.h +++ b/drivers/block/drbd/drbd_req.h @@ -104,6 +104,7 @@ enum drbd_req_event { read_ahead_completed_with_error, write_completed_with_error, completed_ok, + resend, nothing, /* for tracing only */ }; @@ -206,6 +207,13 @@ enum drbd_req_state_bits { #define RQ_WRITE (1UL << __RQ_WRITE) +/* For waking up the frozen transfer log mod_req() has to return if the request + should be counted in the epoch object*/ +#define MR_WRITE_SHIFT 0 +#define MR_WRITE (1 << MR_WRITE_SHIFT) +#define MR_READ_SHIFT 1 +#define MR_READ (1 << MR_READ_SHIFT) + /* epoch entries */ static inline struct hlist_head *ee_hash_slot(struct drbd_conf *mdev, sector_t sector) |