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authorRobert Jennings <rcj@linux.vnet.ibm.com>2007-10-30 11:37:07 -0500
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2007-11-03 12:10:36 -0500
commit3c887e8a1a4553ae6263fc9490e33de213e3746f (patch)
tree38cf13ce92acd4740a74b12a37808650c83edca3 /MAINTAINERS
parent7e2b19fbc7b9c1fd8ee9c79b375fcedb69dd07c9 (diff)
[SCSI] ibmvscsi: Prevent IO during partner login
By setting the request_limit in send_srp_login to 1 we allowed login requests to be sent to the server adapter. If this was not an initial login, but was a login after a disconnect with the server, other I/O requests could attempt to be processed before the login occured. These I/O requests would fail, sometimes resulting in filesystems getting marked read-only. To address this we can set the request_limit to 0 while doing the login and add an exception where login requests, along with task management events, are always passed to the server. There is a case where the request_limit had already reached 0 would result in all events being sent rather than returning SCSI_MLQUEUE_HOST_BUSY; this has also been fixed by this patch. Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com> Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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