1 files changed, 23 insertions, 21 deletions

diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 1d523bec0a94..63590f55363b 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -287,24 +287,10 @@ int v9fs_init_inode(struct v9fs_session_info *v9ses,
 	case S_IFREG:
 		if (v9fs_proto_dotl(v9ses)) {
 			inode->i_op = &v9fs_file_inode_operations_dotl;
-			if (v9ses->cache == CACHE_LOOSE ||
-			    v9ses->cache == CACHE_FSCACHE)
-				inode->i_fop =
-					&v9fs_cached_file_operations_dotl;
-			else if (v9ses->cache == CACHE_MMAP)
-				inode->i_fop = &v9fs_mmap_file_operations_dotl;
-			else
-				inode->i_fop = &v9fs_file_operations_dotl;
+			inode->i_fop = &v9fs_file_operations_dotl;
 		} else {
 			inode->i_op = &v9fs_file_inode_operations;
-			if (v9ses->cache == CACHE_LOOSE ||
-			    v9ses->cache == CACHE_FSCACHE)
-				inode->i_fop =
-					&v9fs_cached_file_operations;
-			else if (v9ses->cache == CACHE_MMAP)
-				inode->i_fop = &v9fs_mmap_file_operations;
-			else
-				inode->i_fop = &v9fs_file_operations;
+			inode->i_fop = &v9fs_file_operations;
 		}
 
 		break;
@@ -843,7 +829,7 @@ v9fs_vfs_atomic_open(struct inode *dir, struct dentry *dentry,
 	inode = d_inode(dentry);
 	v9inode = V9FS_I(inode);
 	mutex_lock(&v9inode->v_mutex);
-	if ((v9ses->cache) && !v9inode->writeback_fid &&
+	if ((v9ses->cache >= CACHE_WRITEBACK) && !v9inode->writeback_fid &&
 	    ((flags & O_ACCMODE) != O_RDONLY)) {
 		/*
 		 * clone a fid and add it to writeback_fid
@@ -1030,6 +1016,7 @@ v9fs_vfs_getattr(struct mnt_idmap *idmap, const struct path *path,
 		 struct kstat *stat, u32 request_mask, unsigned int flags)
 {
 	struct dentry *dentry = path->dentry;
+	struct inode *inode = d_inode(dentry);
 	struct v9fs_session_info *v9ses;
 	struct p9_fid *fid;
 	struct p9_wstat *st;
@@ -1039,6 +1026,14 @@ v9fs_vfs_getattr(struct mnt_idmap *idmap, const struct path *path,
 	if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
 		generic_fillattr(&nop_mnt_idmap, d_inode(dentry), stat);
 		return 0;
+	} else if (v9ses->cache >= CACHE_WRITEBACK) {
+		if (S_ISREG(inode->i_mode)) {
+			int retval = filemap_fdatawrite(inode->i_mapping);
+
+			if (retval)
+				p9_debug(P9_DEBUG_ERROR,
+				    "flushing writeback during getattr returned %d\n", retval);
+		}
 	}
 	fid = v9fs_fid_lookup(dentry);
 	if (IS_ERR(fid))
@@ -1115,8 +1110,12 @@ static int v9fs_vfs_setattr(struct mnt_idmap *idmap,
 	}
 
 	/* Write all dirty data */
-	if (d_is_reg(dentry))
-		filemap_write_and_wait(inode->i_mapping);
+	if (d_is_reg(dentry)) {
+		retval = filemap_fdatawrite(inode->i_mapping);
+		if (retval)
+			p9_debug(P9_DEBUG_ERROR,
+			    "flushing writeback during setattr returned %d\n", retval);
+	}
 
 	retval = p9_client_wstat(fid, &wstat);
 
@@ -1127,9 +1126,12 @@ static int v9fs_vfs_setattr(struct mnt_idmap *idmap,
 		return retval;
 
 	if ((iattr->ia_valid & ATTR_SIZE) &&
-	    iattr->ia_size != i_size_read(inode)) {
+		 iattr->ia_size != i_size_read(inode)) {
 		truncate_setsize(inode, iattr->ia_size);
-		fscache_resize_cookie(v9fs_inode_cookie(v9inode), iattr->ia_size);
+		if (v9ses->cache == CACHE_FSCACHE)
+			fscache_resize_cookie(v9fs_inode_cookie(v9inode), iattr->ia_size);
+		else
+			invalidate_mapping_pages(&inode->i_data, 0, -1);
 	}
 
 	v9fs_invalidate_inode_attr(inode);