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| author | Andreas Gruenbacher <agruen@linbit.com> | 2011-01-27 16:12:23 +0300 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2011-09-28 12:26:29 +0400 |
| commit | a500c2efbbb3a57f83e18382e927b18513aca4cd (patch) | |
| tree | c298951b9228729fb939747e651a928af5469631 /drivers/block/drbd/drbd_req.h | |
| parent | 9e204cddaf76d19ce0e84f025b0946110694dbfb (diff) | |
| download | linux-a500c2efbbb3a57f83e18382e927b18513aca4cd.tar.xz | |
drbd: struct drbd_request: Introduce a new collision flag
This flag is set when a processes puts itself to sleep to wait for a
conflicting request to complete.
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 | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/block/drbd/drbd_req.h b/drivers/block/drbd/drbd_req.h index 431e3f962c3a..7a7464a2b3a6 100644 --- a/drivers/block/drbd/drbd_req.h +++ b/drivers/block/drbd/drbd_req.h @@ -194,6 +194,12 @@ enum drbd_req_state_bits { /* Should call drbd_al_complete_io() for this request... */ __RQ_IN_ACT_LOG, + + /* + * Set when a processes puts itself to sleep to wait for this request + * to complete. + */ + __RQ_COLLISION, }; #define RQ_LOCAL_PENDING (1UL << __RQ_LOCAL_PENDING) @@ -214,6 +220,7 @@ enum drbd_req_state_bits { #define RQ_WRITE (1UL << __RQ_WRITE) #define RQ_IN_ACT_LOG (1UL << __RQ_IN_ACT_LOG) +#define RQ_COLLISION (1UL << __RQ_COLLISION) /* For waking up the frozen transfer log mod_req() has to return if the request should be counted in the epoch object*/ |