diff options
author | Lars Ellenberg <lars.ellenberg@linbit.com> | 2011-11-02 16:29:45 +0100 |
---|---|---|
committer | Philipp Reisner <philipp.reisner@linbit.com> | 2012-05-09 15:15:58 +0200 |
commit | 763eb63625a625e4d160cbb4cce2bcdb40141b97 (patch) | |
tree | 7399533f422da35884c7a67b9972b23757890256 /COPYING | |
parent | e89868a0927cfb8a3f535c938e5d6dd7edc6353c (diff) |
drbd: fix potential spinlock deadlock
drbd_try_clear_on_disk_bm() has a sanity check for the number of blocks
left to be resynced (rs_left) in the current resync extent.
If it detects a mismatch, it complains, and forces a disconnect using
drbd_force_state(mdev, NS(conn, C_DISCONNECTING));
Unfortunately, this may be called while holding the req_lock,
and drbd_force_state() want's to aquire that lock itself. Deadlock.
Don't force a disconnect, but fix up rs_left by recounting and
reassigning the number of dirty blocks in that extent.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'COPYING')
0 files changed, 0 insertions, 0 deletions