linux-kernel - [PATCH v5 03/27] afs: Use wait_on_page_writeback

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Date:   Sat, 20 Mar 2021 05:40:40 +0000
From:   "Matthew Wilcox (Oracle)" <willy@...radead.org>
To:     linux-mm@...ck.org
Cc:     "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-cachefs@...hat.com, linux-afs@...ts.infradead.org
Subject: [PATCH v5 03/27] afs: Use wait_on_page_writeback_killable

Open-coding this function meant it missed out on the recent bugfix
for waiters being woken by a delayed wake event from a previous
instantiation of the page.

Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
---
 fs/afs/write.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/afs/write.c b/fs/afs/write.c
index b2e03de09c24..106a864b6a93 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -850,8 +850,7 @@ vm_fault_t afs_page_mkwrite(struct vm_fault *vmf)
 		return VM_FAULT_RETRY;
 #endif
 
-	if (PageWriteback(page) &&
-	    wait_on_page_bit_killable(page, PG_writeback) < 0)
+	if (wait_on_page_writeback_killable(page))
 		return VM_FAULT_RETRY;
 
 	if (lock_page_killable(page) < 0)
-- 
2.30.2