nfsd: use RWF_SYNC

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index d40010e4f1a97e6591914d6815d924ce6bd0964b..6fbd81ecb41080a6e81aa712fc45af77c3a4fde1 100644 (file)
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -935,8 +935,8 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
        int                     stable = *stablep;
        int                     use_wgather;
        loff_t                  pos = offset;
-       loff_t                  end = LLONG_MAX;
        unsigned int            pflags = current->flags;
+       int                     flags = 0;
 
        if (test_bit(RQ_LOCAL, &rqstp->rq_flags))
                /*
@@ -955,9 +955,12 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
        if (!EX_ISSYNC(exp))
                stable = 0;
 
+       if (stable && !use_wgather)
+               flags |= RWF_SYNC;
+
        /* Write the data. */
        oldfs = get_fs(); set_fs(KERNEL_DS);
-       host_err = vfs_writev(file, (struct iovec __user *)vec, vlen, &pos, 0);
+       host_err = vfs_writev(file, (struct iovec __user *)vec, vlen, &pos, flags);
        set_fs(oldfs);
        if (host_err < 0)
                goto out_nfserr;
@@ -965,15 +968,8 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
        nfsdstats.io_write += host_err;
        fsnotify_modify(file);
 
-       if (stable) {
-               if (use_wgather) {
-                       host_err = wait_for_concurrent_writes(file);
-               } else {
-                       if (*cnt)
-                               end = offset + *cnt - 1;
-                       host_err = vfs_fsync_range(file, offset, end, 0);
-               }
-       }
+       if (stable && use_wgather)
+               host_err = wait_for_concurrent_writes(file);
 
 out_nfserr:
        dprintk("nfsd: write complete host_err=%d\n", host_err);