3.16.57-rc1 review patch. If anyone has any objections, please let me know.
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From: Trond Myklebust trond.myklebust@primarydata.com
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: Ben Hutchings ben@decadent.org.uk --- fs/nfs/write.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1661,6 +1661,8 @@ static void nfs_commit_release_pages(str set_bit(NFS_CONTEXT_RESEND_WRITES, &req->wb_context->flags); next: nfs_unlock_and_release_request(req); + /* Latency breaker */ + cond_resched(); } nfs_init_cinfo(&cinfo, data->inode, data->dreq); if (atomic_dec_and_test(&cinfo.mds->rpcs_out))