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authorTejun Heo <tj@kernel.org>2013-09-11 22:29:05 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-09-26 15:30:22 -0700
commite34ff4906199d2ebd248ae897ae34f52bea151c9 (patch)
tree2ae9507f68e08651b3f960de51b77a1d84e21453 /crypto/crypto_user.c
parent58292cbe6669d74498a5f08db13e57cb3bcfb81d (diff)
downloadlinux-e34ff4906199d2ebd248ae897ae34f52bea151c9.tar.bz2
sysfs: remove ktype->namespace() invocations in directory code
For some unrecognizable reason, namespace information is communicated to sysfs through ktype->namespace() callback when there's *nothing* which needs the use of a callback. The whole sequence of operations is completely synchronous and sysfs operations simply end up calling back into the layer which just invoked it in order to find out the namespace information, which is completely backwards, obfuscates what's going on and unnecessarily tangles two separate layers. This patch doesn't remove ktype->namespace() but shifts its handling to kobject layer. We probably want to get rid of the callback in the long term. This patch adds an explicit param to sysfs_{create|rename|move}_dir() and renames them to sysfs_{create|rename|move}_dir_ns(), respectively. ktype->namespace() invocations are moved to the calling sites of the above functions. A new helper kboject_namespace() is introduced which directly tests kobj_ns_type_operations->type which should give the same result as testing sysfs_fs_type(parent_sd) and returns @kobj's namespace tag as necessary. kobject_namespace() is extern as it will be used from another file in the following patches. This patch should be an equivalent conversion without any functional difference. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Kay Sievers <kay@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'crypto/crypto_user.c')
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