Commit b271ec47 authored by Aneesh Kumar K.V's avatar Aneesh Kumar K.V Committed by Eric Van Hensbergen
Browse files

fs/9p: Update link count correctly on different file system operations


Signed-off-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: default avatarVenkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: default avatarEric Van Hensbergen <ericvh@gmail.com>
parent edd73cf5
......@@ -510,8 +510,17 @@ static int v9fs_remove(struct inode *dir, struct dentry *file, int rmdir)
return PTR_ERR(v9fid);
retval = p9_client_remove(v9fid);
if (!retval)
drop_nlink(file_inode);
if (!retval) {
/*
* directories on unlink should have zero
* link count
*/
if (rmdir) {
clear_nlink(file_inode);
drop_nlink(dir);
} else
drop_nlink(file_inode);
}
return retval;
}
......@@ -697,7 +706,8 @@ static int v9fs_vfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
if (IS_ERR(fid)) {
err = PTR_ERR(fid);
fid = NULL;
}
} else
inc_nlink(dir);
if (fid)
p9_client_clunk(fid);
......@@ -809,6 +819,7 @@ v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry)
{
struct inode *old_inode;
struct inode *new_inode;
struct v9fs_session_info *v9ses;
struct p9_fid *oldfid;
struct p9_fid *olddirfid;
......@@ -819,6 +830,7 @@ v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
P9_DPRINTK(P9_DEBUG_VFS, "\n");
retval = 0;
old_inode = old_dentry->d_inode;
new_inode = new_dentry->d_inode;
v9ses = v9fs_inode2v9ses(old_inode);
oldfid = v9fs_fid_lookup(old_dentry);
if (IS_ERR(oldfid))
......@@ -859,9 +871,21 @@ v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
retval = p9_client_wstat(oldfid, &wstat);
clunk_newdir:
if (!retval)
if (!retval) {
if (new_inode) {
if (S_ISDIR(new_inode->i_mode))
clear_nlink(new_inode);
else
drop_nlink(new_inode);
}
if (S_ISDIR(old_inode->i_mode)) {
if (!new_inode)
inc_nlink(new_dir);
drop_nlink(old_dir);
}
/* successful rename */
d_move(old_dentry, new_dentry);
}
up_write(&v9ses->rename_sem);
p9_client_clunk(newdirfid);
......
......@@ -371,7 +371,7 @@ static int v9fs_vfs_mkdir_dotl(struct inode *dir,
}
/* Now set the ACL based on the default value */
v9fs_set_create_acl(dentry, dacl, pacl);
inc_nlink(dir);
error:
if (fid)
p9_client_clunk(fid);
......
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