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| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2017-12-18 22:39:13 +0300 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2018-01-15 07:06:28 +0300 |
| commit | 7f1bda447c9bd48b415acedba6b830f61591601f (patch) | |
| tree | b3a94bf5f05759b70d54e9df0e6a58514c5cb812 | |
| parent | a8750ddca918032d6349adbf9a4b6555e7db20da (diff) | |
| download | linux-7f1bda447c9bd48b415acedba6b830f61591601f.tar.xz | |
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>
| -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 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) |