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VMCI: Use set_page_dirty_lock() when unregistering guest memory 

[ Upstream commit 5a16c535409f8dcb7568e20737309e3027ae3e49 ]

When the VMCI host support releases guest memory in the case where
the VM was killed, the pinned guest pages aren't locked. Use
set_page_dirty_lock() instead of set_page_dirty().

Testing done: Killed VM while having an active VMCI based vSocket
connection and observed warning from ext4. With this fix, no
warning was observed. Ran various vSocket tests without issues.

Fixes: 06164d2b72 ("VMCI: queue pairs implementation.")
Reviewed-by: Vishnu Dasa <vdasa@vmware.com>
Signed-off-by: Jorgen Hansen <jhansen@vmware.com>
Link: https://lore.kernel.org/r/1611160360-30299-1-git-send-email-jhansen@vmware.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jorgen Hansen 2021-01-20 08:32:40 -08:00 committed by Greg Kroah-Hartman
parent e8ba750116
commit 8c23e9f4c7
1 changed files with 1 additions and 1 deletions
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2
drivers/misc/vmw_vmci/vmci_queue_pair.c
View File

@ -630,7 +630,7 @@ static void qp_release_pages(struct page **pages,
for (i = 0; i < num_pages; i++) {
if (dirty)
set_page_dirty(pages[i]);
set_page_dirty_lock(pages[i]);
put_page(pages[i]);
pages[i] = NULL;