From: Thomas Zeitlhofer thomas.zeitlhofer+lkml@ze-it.at
stable inclusion from stable-v5.10.83 commit f634c755a0ee16232a450406cbd6266f0f500d2d bugzilla: 185879 https://gitee.com/openeuler/kernel/issues/I4QUVG
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit cefcf24b4d351daf70ecd945324e200d3736821e ]
Commit 39fbef4b0f77 ("PM: hibernate: Get block device exclusively in swsusp_check()") changed the opening mode of the block device to (FMODE_READ | FMODE_EXCL).
In the corresponding calls to swsusp_close(), the mode is still just FMODE_READ which triggers the warning in blkdev_flush_mapping() on resume from hibernate.
So, use the mode (FMODE_READ | FMODE_EXCL) also when closing the device.
Fixes: 39fbef4b0f77 ("PM: hibernate: Get block device exclusively in swsusp_check()") Signed-off-by: Thomas Zeitlhofer thomas.zeitlhofer+lkml@ze-it.at Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- kernel/power/hibernate.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index 2fc7d509a34f..bf640fd6142a 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -688,7 +688,7 @@ static int load_image_and_restore(void) goto Unlock;
error = swsusp_read(&flags); - swsusp_close(FMODE_READ); + swsusp_close(FMODE_READ | FMODE_EXCL); if (!error) error = hibernation_restore(flags & SF_PLATFORM_MODE);
@@ -978,7 +978,7 @@ static int software_resume(void) /* The snapshot device should not be opened while we're running */ if (!hibernate_acquire()) { error = -EBUSY; - swsusp_close(FMODE_READ); + swsusp_close(FMODE_READ | FMODE_EXCL); goto Unlock; }
@@ -1013,7 +1013,7 @@ static int software_resume(void) pm_pr_dbg("Hibernation image not present or could not be loaded.\n"); return error; Close_Finish: - swsusp_close(FMODE_READ); + swsusp_close(FMODE_READ | FMODE_EXCL); goto Finish; }