From: Jan Kara Date: Wed, 6 Sep 2017 23:21:33 +0000 (-0700) Subject: hugetlbfs: use pagevec_lookup_range() in remove_inode_hugepages() X-Git-Tag: v4.14-rc1~126^2~65 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=48f2301c07b299f5bcd64563d90215a8ba73e154;p=platform%2Fkernel%2Flinux-rpi3.git hugetlbfs: use pagevec_lookup_range() in remove_inode_hugepages() We want only pages from given range in remove_inode_hugepages(). Use pagevec_lookup_range() instead of pagevec_lookup(). Link: http://lkml.kernel.org/r/20170726114704.7626-8-jack@suse.cz Signed-off-by: Jan Kara Reviewed-by: Mike Kravetz Cc: Nadia Yvette Chambers Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index b9678ce..8931236 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -403,7 +403,6 @@ static void remove_inode_hugepages(struct inode *inode, loff_t lstart, struct pagevec pvec; pgoff_t next, index; int i, freed = 0; - long lookup_nr = PAGEVEC_SIZE; bool truncate_op = (lend == LLONG_MAX); memset(&pseudo_vma, 0, sizeof(struct vm_area_struct)); @@ -412,30 +411,17 @@ static void remove_inode_hugepages(struct inode *inode, loff_t lstart, next = start; while (next < end) { /* - * Don't grab more pages than the number left in the range. - */ - if (end - next < lookup_nr) - lookup_nr = end - next; - - /* * When no more pages are found, we are done. */ - if (!pagevec_lookup(&pvec, mapping, &next, lookup_nr)) + if (!pagevec_lookup_range(&pvec, mapping, &next, end - 1, + PAGEVEC_SIZE)) break; for (i = 0; i < pagevec_count(&pvec); ++i) { struct page *page = pvec.pages[i]; u32 hash; - /* - * The page (index) could be beyond end. This is - * only possible in the punch hole case as end is - * max page offset in the truncate case. - */ index = page->index; - if (index >= end) - break; - hash = hugetlb_fault_mutex_hash(h, current->mm, &pseudo_vma, mapping, index, 0);