Commit cb03c143 authored Feb 13, 2020 by Andreas Gruenbacher Committed by Ilya Dryomov Mar 30, 2020

ceph: switch to page_mkwrite_check_truncate in ceph_page_mkwrite



Use the "page has been truncated" logic in page_mkwrite_check_truncate
instead of reimplementing it here.  Other than with the existing code,
fail with -EFAULT / VM_FAULT_NOPAGE when page_offset(page) == size here
as well, as should be expected.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

parent f682dc71

fs/ceph/addr.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1655,7 +1655,7 @@ static vm_fault_t ceph_page_mkwrite(struct vm_fault *vmf)
		do {
		lock_page(page);

		if ((off > size) \|\| (page->mapping != inode->i_mapping)) {
		if (page_mkwrite_check_truncate(page, inode) < 0) {
		unlock_page(page);
		ret = VM_FAULT_NOPAGE;
		break;

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