Btrfs: fix unprotected device list access when cloning fs devices

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We can build a new filesystem based a seed filesystem, and we need clone
the fs devices when we open the new filesystem. But someone might clear
the seed flag of the seed filesystem, then mount that filesystem and
remove some device. If we mount the new filesystem, we might access
a device list which was being changed when we clone the fs devices.
Fix it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>

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Miao Xie 2014-09-03 21:35:42 +08:00 • committed by Chris Mason

parent 2196d6e8a7

commit adbbb8631b

1 changed files with 3 additions and 0 deletions

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fs/btrfs/volumes.c

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