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authorTejun Heo <tj@kernel.org>2014-02-03 23:02:57 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-02-08 03:42:40 +0400
commitccf02aaf8167bb8bfb3c17c01c843d309b872671 (patch)
tree744c59c27e0883dca4da631118432a8df86ce894 /REPORTING-BUGS
parent35beab0635f3cdd475e3c11a304b866c25b76fcf (diff)
downloadlinux-ccf02aaf8167bb8bfb3c17c01c843d309b872671.tar.xz
kernfs: invoke kernfs_unmap_bin_file() directly from kernfs_deactivate()
kernfs_unmap_bin_file() is supposed to unmap all memory mappings of the target file before kernfs_remove() finishes; however, it currently is being called from kernfs_addrm_finish() and has the same race problem as the original implementation of deactivation when there are multiple removers - only the remover which snatches the node to its addrm_cxt->removed list is guaranteed to wait for its completion before returning. It can be easily fixed by moving kernfs_unmap_bin_file() invocation from kernfs_addrm_finish() to kernfs_deactivated(). The function may be called multiple times but that shouldn't do any harm. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'REPORTING-BUGS')
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