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Commit d94e0c05 authored by Nicholas Piggin's avatar Nicholas Piggin Committed by Linus Torvalds
Browse files

nfs: no PG_private waiters remain, remove waker 

Since commit 4f52b6bb ("NFS: Don't call COMMIT in ->releasepage()"),
no tasks wait on PagePrivate.

Thus the wake introduced in commit 95905446 ("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: default avatarNicholas Piggin <npiggin@gmail.com>
Cc: Trond Myklebust <trond.myklebust@primarydata.com>
Cc: Anna Schumaker <anna.schumaker@netapp.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 93607e5a

fs/nfs/write.c

+0 −2
Original line number Diff line number Diff line
@@ -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--;