From c5051c7bc777dffa5661569dec5997f432b9a34a Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 16 Mar 2017 16:27:49 +0000 Subject: [PATCH] afs: Don't wait for page writeback with the page lock held Drop the page lock before waiting for page writeback. Signed-off-by: David Howells --- fs/afs/write.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/fs/afs/write.c b/fs/afs/write.c index e5f150bccfb5..2d2fccd5044b 100644 --- a/fs/afs/write.c +++ b/fs/afs/write.c @@ -518,17 +518,16 @@ static int afs_writepages_region(struct address_space *mapping, */ lock_page(page); - if (page->mapping != mapping) { + if (page->mapping != mapping || !PageDirty(page)) { unlock_page(page); put_page(page); continue; } - if (wbc->sync_mode != WB_SYNC_NONE) - wait_on_page_writeback(page); - - if (PageWriteback(page) || !PageDirty(page)) { + if (PageWriteback(page)) { unlock_page(page); + if (wbc->sync_mode != WB_SYNC_NONE) + wait_on_page_writeback(page); put_page(page); continue; } -- GitLab