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authorTejun Heo <tj@kernel.org>2015-08-18 14:55:28 -0700
committerJens Axboe <axboe@fb.com>2015-08-18 15:49:18 -0700
commit20386ce0143899ccb5bcbda714436a82d3029f33 (patch)
treef1fe9b3a30a3afce0ea20632b830007495d95b0a /mm/backing-dev.c
parent5332dfc36483d2373d980526145789a354af2d49 (diff)
downloadlinux-20386ce0143899ccb5bcbda714436a82d3029f33.tar.bz2
blkcg: refine error codes returned during blkcg configuration
blkcg currently returns -EINVAL for most errors which can be pretty confusing given that the failure modes are quite varied. Update the error returns so that * -EINVAL only for syntactic errors. * -ERANGE if the value is out of range. * -ENODEV if the target device can't be found. * -EOPNOTSUPP if the policy is not enabled on the target device. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'mm/backing-dev.c')
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