Add a ->sync_fs method for data integrity syncs, and reimplement
->write_super ontop of it.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Index: vfs-2.6/fs/exofs/super.c
===================================================================
--- vfs-2.6.orig/fs/exofs/super.c 2009-06-05 15:59:08.521843147 +0200
+++ vfs-2.6/fs/exofs/super.c 2009-06-05 16:02:20.687950326 +0200
@@ -200,18 +200,18 @@ static const struct export_operations ex
/*
* Write the superblock to the OSD
*/
-static void exofs_write_super(struct super_block *sb)
+static int exofs_sync_fs(struct super_block *sb, int wait)
{
struct exofs_sb_info *sbi;
struct exofs_fscb *fscb;
struct osd_request *or;
struct osd_obj_id obj;
- int ret;
+ int ret = -ENOMEM;
fscb = kzalloc(sizeof(struct exofs_fscb), GFP_KERNEL);
if (!fscb) {
EXOFS_ERR("exofs_write_super: memory allocation failed.\n");
- return;
+ return -ENOMEM;
}
lock_super(sb);
@@ -249,6 +249,15 @@ out:
unlock_kernel();
unlock_super(sb);
kfree(fscb);
+ return ret;
+}
+
+static void exofs_write_super(struct super_block *sb)
+{
+ if (!(sb->s_flags & MS_RDONLY))
+ exofs_sync_fs(sb, 1);
+ else
+ sb->s_dirt = 0;
}
/*
@@ -493,6 +502,7 @@ static const struct super_operations exo
.delete_inode = exofs_delete_inode,
.put_super = exofs_put_super,
.write_super = exofs_write_super,
+ .sync_fs = exofs_sync_fs,
.statfs = exofs_statfs,
};
--
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