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exofs: add ->sync_fs 

Add a ->sync_fs method for data integrity syncs, and reimplement
->write_super ontop of it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig 2009-06-08 10:03:58 +02:00 committed by Al Viro
parent 561e47ce72
commit 80e09fb942
1 changed files with 13 additions and 3 deletions
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16
fs/exofs/super.c
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@ -200,18 +200,18 @@ static const struct export_operations exofs_export_ops;
/*
* 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 exofs_sops = {
.delete_inode = exofs_delete_inode,
.put_super = exofs_put_super,
.write_super = exofs_write_super,
.sync_fs = exofs_sync_fs,
.statfs = exofs_statfs,
};