diff options
| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2017-12-18 14:39:13 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-16 20:22:58 +0100 |
| commit | 3d03af006438b91dab7c1feb474a5c899554acac (patch) | |
| tree | 25d01db43380c6cc97bd5f53a4284c30a9ab0ba7 | |
| parent | 3ac2d17a6ed38d3e662e56ad79e0ba1a98247830 (diff) | |
| download | linux-stable-3d03af006438b91dab7c1feb474a5c899554acac.tar.gz linux-stable-3d03af006438b91dab7c1feb474a5c899554acac.tar.bz2 linux-stable-3d03af006438b91dab7c1feb474a5c899554acac.zip | |
NFS: Add a cond_resched() to nfs_commit_release_pages()
commit 7f1bda447c9bd48b415acedba6b830f61591601f upstream.
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>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/nfs/write.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nfs/write.c b/fs/nfs/write.c index de325804941d..76da415be39a 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1836,6 +1836,8 @@ 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) |