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authorNicholas Piggin <npiggin@gmail.com>2017-02-22 15:44:39 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-22 16:41:29 -0800
commitd94e0c05eba9ed627ce467a7c3e92b365269f905 (patch)
treeaf2c18d5360a60f5c311b0f4a003925ae095c59b /fs
parent93607e5a554a6408a1b56cdd146edc91e5da9983 (diff)
downloadlinux-d94e0c05eba9ed627ce467a7c3e92b365269f905.tar.gz
nfs: no PG_private waiters remain, remove waker
Since commit 4f52b6bb8c57 ("NFS: Don't call COMMIT in ->releasepage()"),
no tasks wait on PagePrivate.

Thus the wake introduced in commit 9590544694be ("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>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/write.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index b00d53d13d47..006068526542 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -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--;