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Commit 61e4ce08 authored by Keith Busch's avatar Keith Busch Committed by Matthew Wilcox
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NVMe: Make iod bio timeout a parameter 



This was originally set to 4 times the IO timeout, but that was when
the IO timeout was 5 seconds instead of 30. 20 seconds for total time
to failure seemed more reasonable than 2 minutes for most, but other
users have requested to make this a module parameter instead.

Signed-off-by: default avatarKeith Busch <keith.busch@intel.com>
[renamed the module parameter to retry_time]
[made retry_time static]
Signed-off-by: default avatarMatthew Wilcox <matthew.r.wilcox@intel.com>
parent 6808c5fb

drivers/block/nvme-core.c

+5 −1
Original line number Diff line number Diff line
@@ -48,12 +48,16 @@ 
#define SQ_SIZE(depth)		(depth * sizeof(struct nvme_command))

#define CQ_SIZE(depth)		(depth * sizeof(struct nvme_completion))

#define ADMIN_TIMEOUT	(60 * HZ)

#define IOD_TIMEOUT	(4 * NVME_IO_TIMEOUT)

#define IOD_TIMEOUT	(retry_time * HZ)



unsigned char io_timeout = 30;

module_param(io_timeout, byte, 0644);

MODULE_PARM_DESC(io_timeout, "timeout in seconds for I/O");



static unsigned char retry_time = 30;

module_param(retry_time, byte, 0644);

MODULE_PARM_DESC(retry_time, "time in seconds to retry failed I/O");



static int nvme_major;

module_param(nvme_major, int, 0);