diff mbox series

[v5,19/39] iomap: Handle tail pages in iomap_page_mkwrite

Message ID 20200529025824.32296-20-willy@infradead.org (mailing list archive)
State New, archived
Headers show
Series Large pages in the page cache | expand

Commit Message

Matthew Wilcox May 29, 2020, 2:58 a.m. UTC 
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>

iomap_page_mkwrite() can be called with a tail page.  If we are,
operate on the head page, since we're treating the entire thing as a
single unit and the whole page is dirtied at the same time.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 fs/iomap/buffered-io.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 5b37844b7d97..78098b94fade 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -1064,7 +1064,7 @@  iomap_page_mkwrite_actor(struct inode *inode, loff_t pos, loff_t length,
 
 vm_fault_t iomap_page_mkwrite(struct vm_fault *vmf, const struct iomap_ops *ops)
 {
-	struct page *page = vmf->page;
+	struct page *page = compound_head(vmf->page);
 	struct inode *inode = file_inode(vmf->vma->vm_file);
 	unsigned long length;
 	loff_t offset;