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-rw-r--r--fs/9p/vfs_super.c55
1 files changed, 53 insertions, 2 deletions
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index 806da5d3b3a0..be74d020436e 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -38,6 +38,7 @@
#include <linux/idr.h>
#include <linux/sched.h>
#include <linux/slab.h>
+#include <linux/statfs.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
@@ -45,7 +46,7 @@
#include "v9fs_vfs.h"
#include "fid.h"
-static const struct super_operations v9fs_super_ops;
+static const struct super_operations v9fs_super_ops, v9fs_super_ops_dotl;
/**
* v9fs_set_super - set the superblock
@@ -76,7 +77,10 @@ v9fs_fill_super(struct super_block *sb, struct v9fs_session_info *v9ses,
sb->s_blocksize_bits = fls(v9ses->maxdata - 1);
sb->s_blocksize = 1 << sb->s_blocksize_bits;
sb->s_magic = V9FS_MAGIC;
- sb->s_op = &v9fs_super_ops;
+ if (v9fs_proto_dotl(v9ses))
+ sb->s_op = &v9fs_super_ops_dotl;
+ else
+ sb->s_op = &v9fs_super_ops;
sb->s_bdi = &v9ses->bdi;
sb->s_flags = flags | MS_ACTIVE | MS_SYNCHRONOUS | MS_DIRSYNC |
@@ -211,6 +215,42 @@ v9fs_umount_begin(struct super_block *sb)
v9fs_session_begin_cancel(v9ses);
}
+static int v9fs_statfs(struct dentry *dentry, struct kstatfs *buf)
+{
+ struct v9fs_session_info *v9ses;
+ struct p9_fid *fid;
+ struct p9_rstatfs rs;
+ int res;
+
+ fid = v9fs_fid_lookup(dentry);
+ if (IS_ERR(fid)) {
+ res = PTR_ERR(fid);
+ goto done;
+ }
+
+ v9ses = v9fs_inode2v9ses(dentry->d_inode);
+ if (v9fs_proto_dotl(v9ses)) {
+ res = p9_client_statfs(fid, &rs);
+ if (res == 0) {
+ buf->f_type = rs.type;
+ buf->f_bsize = rs.bsize;
+ buf->f_blocks = rs.blocks;
+ buf->f_bfree = rs.bfree;
+ buf->f_bavail = rs.bavail;
+ buf->f_files = rs.files;
+ buf->f_ffree = rs.ffree;
+ buf->f_fsid.val[0] = rs.fsid & 0xFFFFFFFFUL;
+ buf->f_fsid.val[1] = (rs.fsid >> 32) & 0xFFFFFFFFUL;
+ buf->f_namelen = rs.namelen;
+ }
+ if (res != -ENOSYS)
+ goto done;
+ }
+ res = simple_statfs(dentry, buf);
+done:
+ return res;
+}
+
static const struct super_operations v9fs_super_ops = {
#ifdef CONFIG_9P_FSCACHE
.alloc_inode = v9fs_alloc_inode,
@@ -222,6 +262,17 @@ static const struct super_operations v9fs_super_ops = {
.umount_begin = v9fs_umount_begin,
};
+static const struct super_operations v9fs_super_ops_dotl = {
+#ifdef CONFIG_9P_FSCACHE
+ .alloc_inode = v9fs_alloc_inode,
+ .destroy_inode = v9fs_destroy_inode,
+#endif
+ .statfs = v9fs_statfs,
+ .clear_inode = v9fs_clear_inode,
+ .show_options = generic_show_options,
+ .umount_begin = v9fs_umount_begin,
+};
+
struct file_system_type v9fs_fs_type = {
.name = "9p",
.get_sb = v9fs_get_sb,
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