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authorEd Cashin <ecashin@coraid.com>2012-12-17 16:04:14 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-17 17:15:25 -0800
commitc450ba0fc12153cb5d3fd582b4ec82c75217a989 (patch)
tree2acf7807aed922a2bb444b8b4f67d40961372331 /drivers/block
parent71114ec45f09eb6ef6f9d41c98d4ab6455086e58 (diff)
downloadlinaro-lsk-c450ba0fc12153cb5d3fd582b4ec82c75217a989.tar.gz
aoe: allow user to disable target failure timeout
With this change, the aoe driver treats the value zero as special for the aoe_deadsecs module parameter. Normally, this value specifies the number of seconds during which the driver will continue to attempt retransmits to an unresponsive AoE target. After aoe_deadsecs has elapsed, the aoe driver marks the aoe device as "down" and fails all I/O. The new meaning of an aoe_deadsecs of zero is for the driver to retransmit commands indefinitely. Signed-off-by: Ed Cashin <ecashin@coraid.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/aoe/aoecmd.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index da360f95c8e..abf4ad2d3e1 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -812,7 +812,9 @@ rexmit_timer(ulong vp)
since = tsince_hr(f);
n = f->waited_total + since;
n /= USEC_PER_SEC;
- if (n > aoe_deadsecs && !(f->flags & FFL_PROBE)) {
+ if (aoe_deadsecs
+ && n > aoe_deadsecs
+ && !(f->flags & FFL_PROBE)) {
/* Waited too long. Device failure.
* Hang all frames on first hash bucket for downdev
* to clean up.