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authorMatthew R. Ochs <mrochs@linux.vnet.ibm.com>2016-03-04 22:55:16 +0100
committerMartin K. Petersen <martin.petersen@oracle.com>2016-03-09 03:17:33 +0100
commit5e6632d19ea2fafaec1b7c4cda7f7157ee8ad983 (patch)
tree083307c2211a29108de926d9d06722fdcb096d35 /drivers/scsi/cxlflash/superpipe.h
parentcxlflash: Unmap problem state area before detaching master context (diff)
downloadlinux-5e6632d19ea2fafaec1b7c4cda7f7157ee8ad983.tar.xz
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cxlflash: Split out context initialization
Presently, context information structures are allocated and initialized in the same routine, create_context(). This imposes an ordering restriction such that all pieces of information needed to initialize a context must be known before the context is even allocated. This design point is not flexible when the order of context creation needs to be modified. Specifically, this can lead to problems when members of the context information structure are a part of an ordering dependency (i.e. - the 'work' structure embedded within the context). To remedy, the allocation is left as-is, inside of the existing create_context() routine and the initialization is transitioned to a new void routine, init_context(). At the same time, in anticipation of these routines not being called in sequence, a state boolean is added to the context information structure to track when the context has been initilized. The context teardown routine, destroy_context(), is modified to support being called with a non-initialized context. Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Reviewed-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/cxlflash/superpipe.h')
-rw-r--r--drivers/scsi/cxlflash/superpipe.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/cxlflash/superpipe.h b/drivers/scsi/cxlflash/superpipe.h
index bede574bcd77..5f9a091fda95 100644
--- a/drivers/scsi/cxlflash/superpipe.h
+++ b/drivers/scsi/cxlflash/superpipe.h
@@ -102,6 +102,7 @@ struct ctx_info {
u64 ctxid;
int lfd;
pid_t pid;
+ bool initialized;
bool unavail;
bool err_recovery_active;
struct mutex mutex; /* Context protection */