X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=fs%2F9p%2Fvfs_file.c;h=c7b6772538432150b0ab9e717175b108087d9de9;hb=2793274298c4423d79701e9a8190f2940bf3c785;hp=6c78343cf69023e5220c6a50127b33325c0f1c97;hpb=ef29498655b18d2bfd69048e20835d19333981ab;p=powerpc.git

diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 6c78343cf6..c7b6772538 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -42,6 +42,8 @@
 #include "v9fs_vfs.h"
 #include "fid.h"
 
+static const struct file_operations v9fs_cached_file_operations;
+
 /**
  * v9fs_file_open - open a file (or directory)
  * @inode: inode to be opened
@@ -79,6 +81,13 @@ int v9fs_file_open(struct inode *inode, struct file *file)
 	vfid->filp = file;
 	kfree(fcall);
 
+	if((vfid->qid.version) && (v9ses->cache)) {
+		dprintk(DEBUG_VFS, "cached");
+		/* enable cached file options */
+		if(file->f_op == &v9fs_file_operations)
+			file->f_op = &v9fs_cached_file_operations;
+	}
+
 	return 0;
 
 Clunk_Fid:
@@ -238,6 +247,17 @@ v9fs_file_write(struct file *filp, const char __user * data,
 	return total;
 }
 
+static const struct file_operations v9fs_cached_file_operations = {
+	.llseek = generic_file_llseek,
+	.read = do_sync_read,
+	.aio_read = generic_file_aio_read,
+	.write = v9fs_file_write,
+	.open = v9fs_file_open,
+	.release = v9fs_dir_release,
+	.lock = v9fs_file_lock,
+	.mmap = generic_file_mmap,
+};
+
 const struct file_operations v9fs_file_operations = {
 	.llseek = generic_file_llseek,
 	.read = v9fs_file_read,