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(parent: 71d7aed) | patch
Btrfs: protect the pending_snapshots list with trans_lock
authorJosef Bacik <josef@redhat.com>
Tue, 14 Jun 2011 19:16:14 +0000 (15:16 -0400)
committerJosef Bacik <josef@redhat.com>
Wed, 15 Jun 2011 17:24:46 +0000 (13:24 -0400)
commit8351583e3f6e430ce8f71913909a96ad5cc6a2f6
treef345f40f94d12ffe090735f19aebc96c72be44bdtree | snapshot
parent71d7aed014457147e8f71a843d5fbf03235e4a85commit | diff
Btrfs: protect the pending_snapshots list with trans_lock

Currently there is nothing protecting the pending_snapshots list on the
transaction.  We only hold the directory mutex that we are snapshotting and a
read lock on the subvol_sem, so we could race with somebody else creating a
snapshot in a different directory and end up with list corruption.  So protect
this list with the trans_lock.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
fs/btrfs/ioctl.c diff | blob | history
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