cifs: have cifsFileInfo hold a reference to a tlink rather than tcon pointer
cifsFileInfo needs a pointer to a tcon, but it doesn't currently hold a
reference to it. Change it to keep a pointer to a tcon_link instead and
hold a reference to it.
That will keep the tcon from being freed until the file is closed.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index aa22969..a39a1c4 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -289,7 +289,7 @@
struct inode *inode = filp->f_path.dentry->d_inode;
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct cifsFileInfo *cfile = filp->private_data;
- struct cifsTconInfo *tcon = cfile->tcon;
+ struct cifsTconInfo *tcon = tlink_tcon(cfile->tlink);
xid = GetXid();
rc = CIFSSMBUnixQFileInfo(xid, tcon, cfile->netfid, &find_data);
@@ -546,7 +546,7 @@
struct inode *inode = filp->f_path.dentry->d_inode;
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct cifsFileInfo *cfile = filp->private_data;
- struct cifsTconInfo *tcon = cfile->tcon;
+ struct cifsTconInfo *tcon = tlink_tcon(cfile->tlink);
xid = GetXid();
rc = CIFSSMBQFileInfo(xid, tcon, cfile->netfid, &find_data);
@@ -967,7 +967,7 @@
if (open_file) {
netfid = open_file->netfid;
netpid = open_file->pid;
- pTcon = open_file->tcon;
+ pTcon = tlink_tcon(open_file->tlink);
goto set_via_filehandle;
}
@@ -1696,7 +1696,7 @@
if (!cifs_inode_needs_reval(inode))
goto check_inval;
- if (cfile->tcon->unix_ext)
+ if (tlink_tcon(cfile->tlink)->unix_ext)
rc = cifs_get_file_info_unix(filp);
else
rc = cifs_get_file_info(filp);
@@ -1817,7 +1817,7 @@
if (open_file) {
__u16 nfid = open_file->netfid;
__u32 npid = open_file->pid;
- pTcon = open_file->tcon;
+ pTcon = tlink_tcon(open_file->tlink);
rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size, nfid,
npid, false);
cifsFileInfo_put(open_file);
@@ -1982,7 +1982,7 @@
if (open_file) {
u16 nfid = open_file->netfid;
u32 npid = open_file->pid;
- pTcon = open_file->tcon;
+ pTcon = tlink_tcon(open_file->tlink);
rc = CIFSSMBUnixSetFileInfo(xid, pTcon, args, nfid, npid);
cifsFileInfo_put(open_file);
} else {