fs/9p: set default readahead pages in cached mode

We want to enable readahead in cached mode

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index 6c812d1c58f1..f84d625b8790 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -86,6 +86,8 @@ v9fs_fill_super(struct super_block *sb, struct v9fs_session_info *v9ses,
         } else
                 sb->s_op = &v9fs_super_ops;
         sb->s_bdi = &v9ses->bdi;
+        if (v9ses->cache)
+                sb->s_bdi->ra_pages = (VM_MAX_READAHEAD * 1024)/PAGE_CACHE_SIZE;
 
         sb->s_flags = flags | MS_ACTIVE | MS_DIRSYNC | MS_NOATIME;
         if (!v9ses->cache)