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

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
......@@ -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;
......
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