From: Eric Sandeen <sandeen@xxxxxxxxxx>
because iomap_page_create initializes the uptodate bitmap using the macro,
not the open-coded value.
Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxxx>
---
include/linux/iomap.h | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/include/linux/iomap.h b/include/linux/iomap.h
index 9a42581..edcdb3a 100644
--- a/include/linux/iomap.h
+++ b/include/linux/iomap.h
@@ -4,6 +4,7 @@
#include <linux/atomic.h>
#include <linux/bitmap.h>
+#include <linux/blkdev.h>
#include <linux/mm.h>
#include <linux/types.h>
#include <linux/mm_types.h>
@@ -104,12 +105,13 @@ struct iomap_ops {
/*
* Structure allocate for each page when block size < PAGE_SIZE to track
- * sub-page uptodate status and I/O completions.
+ * sub-page uptodate status and I/O completions. Allocate bitmap to
+ * accomodate blocks as small as SECTOR_SIZE
*/
struct iomap_page {
atomic_t read_count;
atomic_t write_count;
- DECLARE_BITMAP(uptodate, PAGE_SIZE / 512);
+ DECLARE_BITMAP(uptodate, PAGE_SIZE / SECTOR_SIZE);
};
static inline struct iomap_page *to_iomap_page(struct page *page)
--
1.8.3.1
