On Fri, May 18, 2012 at 11:46:30AM -0700, Dave Hansen wrote: > > When called for anonymous (non-shared) mappings, > hugetlb_reserve_pages() does a resv_map_alloc(). It depends on > code in hugetlbfs's vm_ops->close() to release that allocation. > > However, in the mmap() failure path, we do a plain unmap_region() > without the remove_vma() which actually calls vm_ops->close(). > > This is a decent fix. This leak could get reintroduced if > new code (say, after hugetlb_reserve_pages() in > hugetlbfs_file_mmap()) decides to return an error. But, I think > it would have to unroll the reservation anyway. > > This hasn't been extensively tested. Pretty much compile and > boot tested along with Christoph's test case. > > Comments? > > Signed-off-by: Dave Hansen <dave@xxxxxxxxxxxxxxxxxx> Acked-by: Mel Gorman <mel@xxxxxxxxx> -- Mel Gorman SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>