Re: [V9fs-developer] [PATCH 2/5] fs/9p: Use write_inode for data sync on server

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On 03/25/2011 04:30 AM, Aneesh Kumar K.V wrote:
Signed-off-by: Aneesh Kumar K.V<aneesh.kumar@xxxxxxxxxxxxxxxxxx>

Reviewed-by: Venkateswararao Jujjuri <jvrao@xxxxxxxxxxxxxxxxxx>
---
  fs/9p/vfs_super.c |   43 +++++++++++++++++++++++++++++++++++++++++++
  1 files changed, 43 insertions(+), 0 deletions(-)

diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index f3eed33..d94adcb 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -307,6 +307,47 @@ static int v9fs_drop_inode(struct inode *inode)
  	return 1;
  }

+static int v9fs_write_inode(struct inode *inode,
+			    struct writeback_control *wbc)
+{
+	int ret;
+	struct p9_wstat wstat;
+	struct v9fs_inode *v9inode;
+	/*
+	 * send an fsync request to server irrespective of
+	 * wbc->sync_mode.
+	 */
+	P9_DPRINTK(P9_DEBUG_VFS, "%s: inode %p\n", __func__, inode);
+	v9inode = V9FS_I(inode);
+	v9fs_blank_wstat(&wstat);
+
+	ret = p9_client_wstat(v9inode->writeback_fid,&wstat);
+	if (ret<  0) {
+		__mark_inode_dirty(inode, I_DIRTY_DATASYNC);
+		return ret;
+	}
+	return 0;
+}
+
+static int v9fs_write_inode_dotl(struct inode *inode,
+				 struct writeback_control *wbc)
+{
+	int ret;
+	struct v9fs_inode *v9inode;
+	/*
+	 * send an fsync request to server irrespective of
+	 * wbc->sync_mode.
+	 */
+	P9_DPRINTK(P9_DEBUG_VFS, "%s: inode %p\n", __func__, inode);
+	v9inode = V9FS_I(inode);
+	ret = p9_client_fsync(v9inode->writeback_fid, 0);
+	if (ret<  0) {
+		__mark_inode_dirty(inode, I_DIRTY_DATASYNC);
+		return ret;
+	}
+	return 0;
+}
+
  static const struct super_operations v9fs_super_ops = {
  	.alloc_inode = v9fs_alloc_inode,
  	.destroy_inode = v9fs_destroy_inode,
@@ -314,6 +355,7 @@ static const struct super_operations v9fs_super_ops = {
  	.evict_inode = v9fs_evict_inode,
  	.show_options = generic_show_options,
  	.umount_begin = v9fs_umount_begin,
+	.write_inode = v9fs_write_inode,
  };

  static const struct super_operations v9fs_super_ops_dotl = {
@@ -325,6 +367,7 @@ static const struct super_operations v9fs_super_ops_dotl = {
  	.evict_inode = v9fs_evict_inode,
  	.show_options = generic_show_options,
  	.umount_begin = v9fs_umount_begin,
+	.write_inode = v9fs_write_inode_dotl,
  };

  struct file_system_type v9fs_fs_type = {

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