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xen-blkback: clear PF_NOFREEZE for xen_blkif_schedule()

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xen_blkif_schedule() kthread calls try_to_freeze() at the beginning of
every attempt to purge the LRU. This operation can't ever succeed though,
as the kthread hasn't marked itself as freezable.

Before (hopefully eventually) kthread freezing gets converted to fileystem
freezing, we'd rather mark xen_blkif_schedule() freezable (as it can
generate I/O during suspend).

Signed-off-by: Jiri Kosina <[email protected]>
Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
This commit is contained in:
Jiri Kosina 2015-10-26 14:47:21 +09:00 • committed by Konrad Rzeszutek Wilk
commit a6e7af1288
1 changed files with 1 additions and 0 deletions
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1
drivers/block/xen-blkback/blkback.c
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@ -613,6 +613,7 @@ int xen_blkif_schedule(void *arg)
xen_blkif_get(blkif);
set_freezable();
while (!kthread_should_stop()) {
if (try_to_freeze())
continue;