Commit f0b33df5 authored by Yan, Zheng's avatar Yan, Zheng Committed by Ilya Dryomov
Browse files

ceph: handle -EAGAIN returned by ceph_update_writeable_page() 



when ceph_update_writeable_page() return -EAGAIN, caller should
lock the page and call ceph_update_writeable_page() again.

Signed-off-by: default avatarYan, Zheng <zyan@redhat.com>
parent 6ce026e4

fs/ceph/addr.c

+15 −13
Original line number Diff line number Diff line
@@ -1475,12 +1475,13 @@ static int ceph_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) 
	/* Update time before taking page lock */

	file_update_time(vma->vm_file);



	do {

		lock_page(page);



		if ((off > size) || (page->mapping != inode->i_mapping)) {

			unlock_page(page);

			ret = VM_FAULT_NOPAGE;

		goto out;

			break;

		}



		ret = ceph_update_writeable_page(vma->vm_file, off, len, page);
@@ -1489,7 +1490,8 @@ static int ceph_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) 
			set_page_dirty(page);

			ret = VM_FAULT_LOCKED;

		}

out:

	} while (ret == -EAGAIN);



	if (ret == VM_FAULT_LOCKED ||

	    ci->i_inline_version != CEPH_INLINE_NONE) {

		int dirty;