Messages in this thread | | | Date | Sun, 29 Apr 2007 01:18:56 +0900 | From | Akinobu Mita <> | Subject | Re: [PATCH] hugetlbfs: fix error path in module_init |
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On Sat, Apr 28, 2007 at 07:50:39AM -0700, William Lee Irwin III wrote: > On Sat, Apr 28, 2007 at 04:19:23PM +0900, Akinobu Mita wrote: > > init_hugetlbfs_fs() needs to unregister hugetlbfs > > when kern_mount() returns error. > > Cc: William Irwin <wli@holomorphy.com> > > Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> > > This patch resolves a clear failure to error check.
I reconsider this patch. It was wrong. Because it is overkill to unregister filesystem just for hugetlbfs_vfsmount mount failure. Because hugetlbfs_vfsmount is only used for shumget() system call and also there is some race condition between register_filesystem() and unregister_filesystem(). (it's not likely happen though)
So what we can do for hugetlbfs module_init failure is adding NULL check for hugetlbfs_vfsmount in hugetlb_zero_setup().
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