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ceph: switch to page_mkwrite_check_truncate in ceph_page_mkwrite

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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>
This commit is contained in:
Andreas Gruenbacher 2020-02-13 21:24:22 +01:00 committed by Ilya Dryomov
parent f682dc713c
commit cb03c14390
1 changed files with 1 additions and 1 deletions
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2
fs/ceph/addr.c
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@ -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;