3.4-stable review patch. If anyone has any objections, please let me know.
------------------ From: Josh Durgin <[email protected]> (cherry picked from commit 403f24d3d51760a8b9368d595fa5f48c309f1a0f) This is updated whenever a snapshot is added or deleted, and the snapc pointer is changed with every refresh of the header. Signed-off-by: Josh Durgin <[email protected]> Reviewed-by: Alex Elder <[email protected]> Reviewed-by: Yehuda Sadeh <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/block/rbd.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1683,7 +1683,9 @@ static int rbd_header_add_snap(struct rb if (ret < 0) return ret; - dev->header.snapc->seq = new_snapid; + down_write(&dev->header_rwsem); + dev->header.snapc->seq = new_snapid; + up_write(&dev->header_rwsem); return 0; bad: -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
