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Diffstat (limited to 'fs/9p/vfs_file.c')
-rw-r--r--fs/9p/vfs_file.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index cafaa46434ba..3902bf43a088 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -41,6 +41,7 @@
#include "v9fs.h"
#include "v9fs_vfs.h"
#include "fid.h"
+#include "cache.h"
static const struct file_operations v9fs_cached_file_operations;
@@ -86,6 +87,10 @@ int v9fs_file_open(struct inode *inode, struct file *file)
/* enable cached file options */
if(file->f_op == &v9fs_file_operations)
file->f_op = &v9fs_cached_file_operations;
+
+#ifdef CONFIG_9P_FSCACHE
+ v9fs_cache_inode_set_cookie(inode, file);
+#endif
}
return 0;
@@ -238,8 +243,9 @@ v9fs_file_write(struct file *filp, const char __user * data,
if (total > 0) {
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);
+ if (inode->i_mapping && inode->i_mapping->nrpages)
+ invalidate_inode_pages2_range(inode->i_mapping,
+ pg_start, pg_end);
*offset += total;
i_size_write(inode, i_size_read(inode) + total);
inode->i_blocks = (i_size_read(inode) + 512 - 1) >> 9;