Re: [PATCH 2/3] btrfs-progs: don't fall back to recursive /dev scan

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 




Reviewed-by: Anand Jain <anand.jain@xxxxxxxxxx>


On 21/08/2014 06:23, Eric Sandeen wrote:
If we didn't find what we are looking for in /proc/partitions,
we're not going to find it by scanning every node under /dev, either.

But that's just what btrfs_scan_for_fsid() does.

Remove that fallback; at that point btrfs_scan_for_fsid() just calls
scan_for_btrfs(), so remove the wrapper & call it directly.

Side note: so, these paths always use /proc/partitions, not libblkid.
Userspace-intiated scans default to libblkid.  I presume this is
part of the design, and intentional?  Anyway, not changing it now!

Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
---

diff --git a/disk-io.c b/disk-io.c
index d10d647..077eb7e 100644
--- a/disk-io.c
+++ b/disk-io.c
@@ -1018,7 +1018,7 @@ int btrfs_scan_fs_devices(int fd, const char *path,
  	}

  	if (total_devs != 1) {
-		ret = btrfs_scan_for_fsid(run_ioctl);
+		ret = scan_for_btrfs(BTRFS_SCAN_PROC, run_ioctl);
  		if (ret)
  			return ret;
  	}
diff --git a/utils.c b/utils.c
index d61cbec..12ed7a2 100644
--- a/utils.c
+++ b/utils.c
@@ -1151,7 +1151,7 @@ int check_mounted_where(int fd, const char *file, char *where, int size,

  	/* scan other devices */
  	if (is_btrfs && total_devs > 1) {
-		if ((ret = btrfs_scan_for_fsid(!BTRFS_UPDATE_KERNEL)))
+		if ((ret = scan_for_btrfs(BTRFS_SCAN_PROC, !BTRFS_UPDATE_KERNEL)))
  			return ret;
  	}

@@ -1339,16 +1339,6 @@ fail:
  	return ret;
  }

-int btrfs_scan_for_fsid(int run_ioctls)
-{
-	int ret;
-
-	ret = scan_for_btrfs(BTRFS_SCAN_PROC, run_ioctls);
-	if (ret)
-		ret = scan_for_btrfs(BTRFS_SCAN_DEV, run_ioctls);
-	return ret;
-}
-
  int btrfs_device_already_in_root(struct btrfs_root *root, int fd,
  				 int super_offset)
  {

--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Filesystem Development]     [Linux NFS]     [Linux NILFS]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux