Fix softlockup by removing the wait_queue flag: WQ_FLAG_BOOKMARK. The commit b0b598ee08f9 (filemap: remove use of wait bookmarks) said the overly long list of waiters on a locked page was solved by commit: 9a1ea439b16b ("mm: put_and_wait_on_page_locked() while page is migrated"). But actually the problem was solved by another commit: 3510ca20ece0 ("Minor page waitqueue cleanups"), so we can remove the bookmark flag now to solve the softlockup problem. Changes in V3: - fixed incorrect mainline patch adaptation: wake_fags -> wake_flags. - Readapt __wake_up_common_lock() Changes in V2: - modified the commit message. Matthew Wilcox (Oracle) (2): filemap: remove use of wait bookmarks sched: remove wait bookmarks include/linux/wait.h | 3 --- kernel/sched/wait.c | 57 ++++++-------------------------------------- mm/filemap.c | 21 +--------------- 3 files changed, 8 insertions(+), 73 deletions(-) -- 2.39.2