Btrfs: hold the tree mod lock in __tree_mod_log_rewind

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We need to hold the tree mod log lock in __tree_mod_log_rewind since we walk
forward in the tree mod entries, otherwise we'll end up with random entries and
trip the BUG_ON() at the front of __tree_mod_log_rewind.  This fixes the panics
people were seeing when running

find /whatever -type f -exec btrfs fi defrag {} \;

Thansk,

Cc: stable@vger.kernel.org
Signed-off-by: Josef Bacik <jbacik@fusionio.com>

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This commit is contained in:

Josef Bacik 2013-06-29 23:15:19 -04:00

parent 261c84b662

commit f1ca7e98a6

1 changed files with 6 additions and 4 deletions

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10

fs/btrfs/ctree.c

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