Trivial: remove assumption on page size.
Signed-off-by: Kirill A. Shutemov <[email protected]>
---
fs/ext4/inode.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index f585f9160a96..45822097d8c2 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -5646,7 +5646,7 @@ static int ext4_bh_unmapped(handle_t *handle, struct
buffer_head *bh)
int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
{
- struct page *page = vmf->page;
+ struct page *page = compound_head(vmf->page);
loff_t size;
unsigned long len;
int ret;
@@ -5682,10 +5682,10 @@ int ext4_page_mkwrite(struct vm_area_struct *vma,
struct vm_fault *vmf)
goto out;
}
- if (page->index == size >> PAGE_SHIFT)
- len = size & ~PAGE_MASK;
- else
- len = PAGE_SIZE;
+ len = hpage_size(page);
+ if (page->index + hpage_nr_pages(page) - 1 == size >> PAGE_SHIFT)
+ len = size & ~hpage_mask(page);
+
/*
* Return if we have all the buffers mapped. This avoids the need to do
* journal_start/journal_stop which can block and take a long time
--
2.8.1
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