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/sysv/inode.c
===================================================================
--- vfs-2.6.orig/fs/sysv/inode.c 2009-06-05 16:25:55.677939770 +0200
+++ vfs-2.6/fs/sysv/inode.c 2009-06-05 16:27:30.132939652 +0200
@@ -31,16 +31,13 @@
#include <asm/byteorder.h>
#include "sysv.h"
-/* This is only called on sync() and umount(), when s_dirt=1. */
-static void sysv_write_super(struct super_block *sb)
+static int sysv_sync_fs(struct super_block *sb, int wait)
{
struct sysv_sb_info *sbi = SYSV_SB(sb);
unsigned long time = get_seconds(), old_time;
lock_super(sb);
lock_kernel();
- if (sb->s_flags & MS_RDONLY)
- goto clean;
/*
* If we are going to write out the super block,
@@ -54,10 +51,19 @@ static void sysv_write_super(struct supe
*sbi->s_sb_time = cpu_to_fs32(sbi, time);
mark_buffer_dirty(sbi->s_bh2);
}
-clean:
- sb->s_dirt = 0;
+
unlock_kernel();
unlock_super(sb);
+
+ return 0;
+}
+
+static void sysv_write_super(struct super_block *sb)
+{
+ if (!(sb->s_flags & MS_RDONLY))
+ sysv_sync_fs(sb, 1);
+ else
+ sb->s_dirt = 0;
}
static int sysv_remount(struct super_block *sb, int *flags, char *data)
@@ -358,6 +364,7 @@ const struct super_operations sysv_sops
.delete_inode = sysv_delete_inode,
.put_super = sysv_put_super,
.write_super = sysv_write_super,
+ .sync_fs = sysv_sync_fs,
.remount_fs = sysv_remount,
.statfs = sysv_statfs,
};
--
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