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target: Fix possible TFO->write_pending() sense_reason_t silent WRITE corruption 

This patch fixes a possible case in transport_generic_new_cmd() where a
failure from TFO->write_pending() from a fabric module return something
other than -EAGAIN or -ENOMEM would cause a failed WRITE to silently
succeed.

Go ahead and return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE for this
special case instead of only just making noise with WARN_ON().

(v2: Fix incorrect exception return for all cases)

Cc: Christoph Hellwig <hch@lst.de>
Cc: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Nicholas Bellinger 2012-11-06 15:43:53 -08:00
parent a2e85d1814
commit b69c1fcf0a
1 changed files with 1 additions and 1 deletions
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2
drivers/target/target_core_transport.c
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@ -2127,7 +2127,7 @@ transport_generic_new_cmd(struct se_cmd *cmd)
/* fabric drivers should only return -EAGAIN or -ENOMEM as error */
WARN_ON(ret);
return 0;
return (!ret) ? 0 : TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
queue_full:
pr_debug("Handling write_pending QUEUE__FULL: se_cmd: %p\n", cmd);