From: Alex Elder Date: Fri, 26 Apr 2013 20:44:35 +0000 (-0500) Subject: rbd: fix a bug in resizing a mapping X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~26^2~44 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e28626a08b3e7412158551a639dd36887e2d728d;p=pandora-kernel.git rbd: fix a bug in resizing a mapping When a snapshot context update occurs, rbd_update_mapping_size() is called to set the capacity of the disk to record the updated size of the image in case it has changed. There's a bug though. The mapping size is in units of *bytes*. The code that updates the mapping size field is assigning a value that has been scaled down to *sectors*. Fix that. Also, check to see if the size has actually changed, and don't bother updating things (specifically, calling set_capacity()) if it has not. This resolves: http://tracker.ceph.com/issues/4833 Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- Reading git-diff-tree failed