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-rw-r--r--fs/9p/vfs_file.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index de7690eec4d..cafaa46434b 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -32,6 +32,7 @@
#include <linux/string.h>
#include <linux/inet.h>
#include <linux/list.h>
+#include <linux/pagemap.h>
#include <asm/uaccess.h>
#include <linux/idr.h>
#include <net/9p/9p.h>
@@ -210,6 +211,7 @@ v9fs_file_write(struct file *filp, const char __user * data,
struct p9_client *clnt;
struct inode *inode = filp->f_path.dentry->d_inode;
int origin = *offset;
+ unsigned long pg_start, pg_end;
P9_DPRINTK(P9_DEBUG_VFS, "data %p count %d offset %x\n", data,
(int)count, (int)*offset);
@@ -225,7 +227,7 @@ v9fs_file_write(struct file *filp, const char __user * data,
if (count < rsize)
rsize = count;
- n = p9_client_write(fid, NULL, data+total, *offset+total,
+ n = p9_client_write(fid, NULL, data+total, origin+total,
rsize);
if (n <= 0)
break;
@@ -234,13 +236,12 @@ v9fs_file_write(struct file *filp, const char __user * data,
} while (count > 0);
if (total > 0) {
- invalidate_inode_pages2_range(inode->i_mapping, origin,
- origin+total);
+ pg_start = origin >> PAGE_CACHE_SHIFT;
+ pg_end = (origin + total - 1) >> PAGE_CACHE_SHIFT;
+ invalidate_inode_pages2_range(inode->i_mapping, pg_start,
+ pg_end);
*offset += total;
- }
-
- if (*offset > i_size_read(inode)) {
- i_size_write(inode, *offset);
+ i_size_write(inode, i_size_read(inode) + total);
inode->i_blocks = (i_size_read(inode) + 512 - 1) >> 9;
}