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Commit ebd1f645 authored by Hannes Reinecke's avatar Hannes Reinecke Committed by James Bottomley
Browse files

[SCSI] scsi_dh_alua: Decrease retry interval 



The alua device handler starts the first retry after 10 seconds,
and increases it times 10 for each round.
This leads to an unnecessary delay. This patch modifies it to
start after one second, and increase by a factor of two.

Signed-off-by: default avatarHannes Reinecke <hare@suse.de>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent cfde3fa1

drivers/scsi/device_handler/scsi_dh_alua.c

+2 −2
Original line number Diff line number Diff line
@@ -506,7 +506,7 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_dh_data *h) 
	int len, k, off, valid_states = 0;

	unsigned char *ucp;

	unsigned err;

	unsigned long expiry, interval = 10;

	unsigned long expiry, interval = 1;



	expiry = round_jiffies_up(jiffies + ALUA_FAILOVER_TIMEOUT);

 retry:
@@ -567,7 +567,7 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_dh_data *h) 
	case TPGS_STATE_TRANSITIONING:

		if (time_before(jiffies, expiry)) {

			/* State transition, retry */

			interval *= 10;

			interval *= 2;

			msleep(interval);

			goto retry;

		}