forked from Minki/linux
b9aaac5a6b
The following case may lead to endless loop during umount.
node A node B node C node D
umount volume,
migrate lockres1
to B
want to lock lockres1,
send
MASTER_REQUEST_MSG
to C
init block mle
send
MIGRATE_REQUEST_MSG
to C
find a block
mle, and then
return
DLM_MIGRATE_RESPONSE_MASTERY_REF
to B
set C in refmap
umount successfully
try to umount, endless
loop occurs when migrate
lockres1 since C is in
refmap
So we can fix this endless loop case by only returning
DLM_MIGRATE_RESPONSE_MASTERY_REF if it has a mastery mle when receiving
MIGRATE_REQUEST_MSG.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: jiangyiwen <jiangyiwen@huawei.com>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Xue jiufei <xuejiufei@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|---|---|---|
| .. | ||
| dlmapi.h | ||
| dlmast.c | ||
| dlmcommon.h | ||
| dlmconvert.c | ||
| dlmconvert.h | ||
| dlmdebug.c | ||
| dlmdebug.h | ||
| dlmdomain.c | ||
| dlmdomain.h | ||
| dlmlock.c | ||
| dlmmaster.c | ||
| dlmrecovery.c | ||
| dlmthread.c | ||
| dlmunlock.c | ||
| Makefile | ||