[v2,0/2] Fix the hibernation test_resume's swapfile open mode

Message

Chen Yu Sept. 6, 2023, 4:18 a.m. UTC

Fix the regression brought by
commit 5904de0d735b ("PM: hibernate: Do not get block device exclusively
in test_resume mode"), which incorrectly open the swapfile in a wrong
mode, and causes unexpected behavior during non-hibernation operation.

Fix it by really disabling exclusive mode under test_resume.

This is the v2 of the fix for a hibernation test_resume swapfile open issue.
Chenzhou found that v1 has a warning during the stress test. It was due to
broken open mode in swsusp_write(), fixes it in v2.

patch 1 is a renaming of the function parameter, to better reflects the swap
device open mode.
patch 2 is to fix the open mode on the swap device. 

v1: https://lore.kernel.org/lkml/[e-mail]/

Chen Yu (2):
  PM: hibernate: Rename the function parameter from snapshot_test to
    exclusive
  PM: hibernate: Fix the exclusive get block device in test_resume mode

 kernel/power/hibernate.c | 12 ++++++------
 kernel/power/power.h     |  4 ++--
 kernel/power/swap.c      | 14 ++++++++------
 3 files changed, 16 insertions(+), 14 deletions(-)