From: Mike Snitzer Date: Wed, 1 Aug 2012 08:44:28 +0000 (+0200) Subject: block: do not artificially constrain max_sectors for stacking drivers X-Git-Tag: v3.6-rc1~20^2~3 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fe86cdcef73ba19a2246a124f0ddbd19b14fb549;p=pandora-kernel.git block: do not artificially constrain max_sectors for stacking drivers blk_set_stacking_limits is intended to allow stacking drivers to build up the limits of the stacked device based on the underlying devices' limits. But defaulting 'max_sectors' to BLK_DEF_MAX_SECTORS (1024) doesn't allow the stacking driver to inherit a max_sectors larger than 1024 -- due to blk_stack_limits' use of min_not_zero. It is now clear that this artificial limit is getting in the way so change blk_set_stacking_limits's max_sectors to UINT_MAX (which allows stacking drivers like dm-multipath to inherit 'max_sectors' from the underlying paths). Reported-by: Vijay Chauhan Tested-by: Vijay Chauhan Signed-off-by: Mike Snitzer Signed-off-by: Jens Axboe --- Reading git-diff-tree failed