On 3/13/13 10:05 PM, Anand Jain wrote:
<maybe a little more commit log would be good?>
So here is what confuses me now. :)
*every* caller of btrfs_read_dev_super() is now called with
0 for the flags variable, so it never reads the backup
under any circumstance.
If it's always called w/ 0, what is the point of the argument?
Is there another patch you have planned that would use this argument
later?
-Eric
> Signed-off-by: Anand Jain <anand.j...@oracle.com>
> ---
> disk-io.c | 2 +-
> find-root.c | 2 +-
> volumes.c | 2 +-
> 3 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/disk-io.c b/disk-io.c
> index 796394f..c2e1c8a 100644
> --- a/disk-io.c
> +++ b/disk-io.c
> @@ -880,7 +880,7 @@ static struct btrfs_fs_info *__open_ctree_fd(int fp,
> const char *path,
> disk_super = fs_info->super_copy;
> ret =
(fs_devices->latest_bdev,
> disk_super, sb_bytenr,
> - BTRFS_SCAN_BACKUP_SB);
> + 0ull);
Isn't just "0" enough?
-Eric
> if (ret) {
> printk("No valid btrfs found\n");
> goto out_devices;
> diff --git a/find-root.c b/find-root.c
> index 9be4fc7..9923209 100644
> --- a/find-root.c
> +++ b/find-root.c
> @@ -151,7 +151,7 @@ static struct btrfs_root *open_ctree_broken(int fd, const
> char *device)
> disk_super = fs_info->super_copy;
> ret = btrfs_read_dev_super(fs_devices->latest_bdev,
> disk_super, BTRFS_SUPER_INFO_OFFSET,
> - BTRFS_SCAN_BACKUP_SB);
> + 0ull);
> if (ret) {
> printk("No valid btrfs found\n");
> goto out_devices;
> diff --git a/volumes.c b/volumes.c
> index 1a28cdd..9003412 100644
> --- a/volumes.c
> +++ b/volumes.c
> @@ -228,7 +228,7 @@ int btrfs_scan_one_device(int fd, const char *path,
> }
> disk_super = (struct btrfs_super_block *)buf;
> ret = btrfs_read_dev_super(fd, disk_super, super_offset,
> - BTRFS_SCAN_BACKUP_SB);
> + 0ull);
> if (ret < 0) {
> ret = -EIO;
> goto error_brelse;
>
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