From: Peng Tao <tao.peng@primarydata.com>
Date: Mon, 1 Dec 2014 00:22:21 +0000 (+0800)
Subject: nfs: add a helper to set NFS_ODIRECT_RESCHED_WRITES to direct writes
X-Git-Tag: firefly_0821_release~176^2~2246^2~38^2~6
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=012fa16dca0da6c487dd066829ff0b0954925fe6;p=firefly-linux-kernel-4.4.55.git

nfs: add a helper to set NFS_ODIRECT_RESCHED_WRITES to direct writes

To allow pnfs LD to ask direct writes to be resend.

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
---

diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index eb814789f700..4fad6b727eb4 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -116,6 +116,12 @@ static inline int put_dreq(struct nfs_direct_req *dreq)
 	return atomic_dec_and_test(&dreq->io_count);
 }
 
+void nfs_direct_set_resched_writes(struct nfs_direct_req *dreq)
+{
+	dreq->flags = NFS_ODIRECT_RESCHED_WRITES;
+}
+EXPORT_SYMBOL_GPL(nfs_direct_set_resched_writes);
+
 static void
 nfs_direct_good_bytes(struct nfs_direct_req *dreq, struct nfs_pgio_header *hdr)
 {
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index ffe4b7ac9e6b..44e84960a26f 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -502,6 +502,7 @@ static inline void nfs_inode_dio_wait(struct inode *inode)
 	inode_dio_wait(inode);
 }
 extern ssize_t nfs_dreq_bytes_left(struct nfs_direct_req *dreq);
+extern void nfs_direct_set_resched_writes(struct nfs_direct_req *dreq);
 
 /* nfs4proc.c */
 extern void __nfs4_read_done_cb(struct nfs_pgio_header *);