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authorTrond Myklebust <trond.myklebust@primarydata.com>2017-12-18 14:39:13 -0500
committerTrond Myklebust <trond.myklebust@primarydata.com>2018-01-14 23:06:28 -0500
commit7f1bda447c9bd48b415acedba6b830f61591601f (patch)
treeb3a94bf5f05759b70d54e9df0e6a58514c5cb812 /fs/nfs
parenta8750ddca918032d6349adbf9a4b6555e7db20da (diff)
NFS: Add a cond_resched() to nfs_commit_release_pages()
The commit list can get very large, and so we need a cond_resched() in nfs_commit_release_pages() in order to ensure we don't hog the CPU for excessive periods of time. Reported-by: Mike Galbraith <efault@gmx.de> Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/write.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 4a379d7918f2..cf61108f8f8d 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1837,6 +1837,8 @@ static void nfs_commit_release_pages(struct nfs_commit_data *data)
set_bit(NFS_CONTEXT_RESEND_WRITES, &req->wb_context->flags);
next:
nfs_unlock_and_release_request(req);
+ /* Latency breaker */
+ cond_resched();
}
nfss = NFS_SERVER(data->inode);
if (atomic_long_read(&nfss->writeback) < NFS_CONGESTION_OFF_THRESH)