btrfs: remove stale comment about the btrfs_show_devname

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There were few lockdep warnings because btrfs_show_devname() was using
device_list_mutex as recorded in the commits:

  0ccd05285e ("btrfs: fix a possible umount deadlock")
  779bf3fefa ("btrfs: fix lock dep warning, move scratch dev out of device_list_mutex and uuid_mutex")

And finally, commit 88c14590cd ("btrfs: use RCU in btrfs_show_devname
for device list traversal") removed the device_list_mutex from
btrfs_show_devname for performance reasons.

This patch removes a stale comment about the function
btrfs_show_devname and device_list_mutex.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Anand Jain 2021-08-24 13:05:22 +08:00 • committed by David Sterba

parent b7cb29e666

commit cdccc03a8a

1 changed files with 0 additions and 7 deletions

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fs/btrfs/volumes.c

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