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(parent: 9e351cc) | patch
Btrfs: hold the commit_root_sem when getting the commit root during send
authorJosef Bacik <jbacik@fb.com>
Fri, 28 Mar 2014 21:16:01 +0000 (17:16 -0400)
committerChris Mason <clm@fb.com>
Mon, 7 Apr 2014 16:08:39 +0000 (09:08 -0700)
commit3f8a18cc53bd1be26eb5b5247e1386ad0e21b623
tree266eeb3baf38b968ae2186575ae70ef431cf159ftree | snapshot
parent9e351cc862b098d8ec8f8022d110932490794925commit | diff
Btrfs: hold the commit_root_sem when getting the commit root during send

We currently rely too heavily on roots being read-only to save us from just
accessing root->commit_root.  We can easily balance blocks out from underneath a
read only root, so to save us from getting screwed make sure we only access
root->commit_root under the commit root sem.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
fs/btrfs/ctree.c diff | blob | history
fs/btrfs/ctree.h diff | blob | history
fs/btrfs/send.c diff | blob | history
Domain: System / Kernel; Licenses: GPL-2.0;