Commit d94e0c05 authored Feb 22, 2017 by Nicholas Piggin Committed by Linus Torvalds Feb 22, 2017

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: 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>

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--;

Admin message