btrfs: lift uuid_mutex to callers of btrfs_scan_one_device

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Prepartory work to fix race between mount and device scan.

The callers will have to manage the critical section, eg. mount wants to
scan and then call btrfs_open_devices without the ioctl scan walking in
and modifying the fs devices in the meantime.

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

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This commit is contained in:

David Sterba 2018-06-19 16:37:36 +02:00

parent 7bcb8164ad

commit 899f9307c3

2 changed files with 13 additions and 3 deletions

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12

fs/btrfs/super.c

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4

fs/btrfs/volumes.c

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