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nfs: no PG_private waiters remain, remove waker

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Since commit 4f52b6bb8c ("NFS: Don't call COMMIT in ->releasepage()"),
no tasks wait on PagePrivate.

Thus the wake introduced in commit 9590544694 ("NFS: avoid deadlocks
with loop-back mounted NFS filesystems.") can be removed.

Link: http://lkml.kernel.org/r/20170103182234.30141-2-npiggin@gmail.com
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Cc: Trond Myklebust <trond.myklebust@primarydata.com>
Cc: Anna Schumaker <anna.schumaker@netapp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Nicholas Piggin 2017-02-22 15:44:39 -08:00 committed by Linus Torvalds
parent 93607e5a55
commit d94e0c05eb
1 changed files with 0 additions and 2 deletions
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2
fs/nfs/write.c
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@ -728,8 +728,6 @@ static void nfs_inode_remove_request(struct nfs_page *req)
if (likely(head->wb_page && !PageSwapCache(head->wb_page))) {
set_page_private(head->wb_page, 0);
ClearPagePrivate(head->wb_page);
smp_mb__after_atomic();
wake_up_page(head->wb_page, PG_private);
clear_bit(PG_MAPPED, &head->wb_flags);
}
nfsi->nrequests--;