tree eb2d3184996d01babcf3689dd20d626f731d340a
parent a6849fa1f7d7d7adbeb6a696beeabfa078acf173
author Eric W. Biederman <ebiederm@aristanetworks.com> 1284969423 -0700
committer Greg Kroah-Hartman <gregkh@suse.de> 1287767803 -0700

sysfs: only access bin file vm_ops with the active lock

bb->vm_ops is a cached copy of the vm_ops of the underlying
sysfs bin file, which means that after sysfs_bin_remove_file
completes it is only longer valid to deference bb->vm_ops.

So move all of the tests of bb->vm_ops inside of where
we hold the sysfs active lock.

Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>