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cifs: add function to get a tcon from cifs_sb

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When we convert cifs to do multiple sessions per mount, we'll need more
than one tcon per superblock. At that point "cifs_sb->tcon" will make
no sense. Add a new accessor function that gets a tcon given a cifs_sb.
For now, it just returns cifs_sb->tcon. Later it'll do more.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Jeff Layton
2010-09-20 16:01:33 -07:00
committed by Steve French
parent ba00ba64cf
commit a6e8a8455c
13 changed files with 74 additions and 71 deletions
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11
fs/cifs/cifsfs.c
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@@ -137,9 +137,6 @@ cifs_read_super(struct super_block *sb, void *data,
sb->s_magic = CIFS_MAGIC_NUMBER;
sb->s_op = &cifs_super_ops;
sb->s_bdi = &cifs_sb->bdi;
/* if (cifs_sb->tcon->ses->server->maxBuf > MAX_CIFS_HDR_SIZE + 512)
sb->s_blocksize =
cifs_sb->tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE; */
sb->s_blocksize = CIFS_MAX_MSGSIZE;
sb->s_blocksize_bits = 14; /* default 2**14 = CIFS_MAX_MSGSIZE */
inode = cifs_root_iget(sb, ROOT_I);
@@ -225,7 +222,7 @@ cifs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
struct cifsTconInfo *tcon = cifs_sb->tcon;
struct cifsTconInfo *tcon = cifs_sb_tcon(cifs_sb);
int rc = -EOPNOTSUPP;
int xid;
@@ -367,7 +364,7 @@ static int
cifs_show_options(struct seq_file *s, struct vfsmount *m)
{
struct cifs_sb_info *cifs_sb = CIFS_SB(m->mnt_sb);
struct cifsTconInfo *tcon = cifs_sb->tcon;
struct cifsTconInfo *tcon = cifs_sb_tcon(cifs_sb);
struct sockaddr *srcaddr;
srcaddr = (struct sockaddr *)&tcon->ses->server->srcaddr;
@@ -458,9 +455,7 @@ static void cifs_umount_begin(struct super_block *sb)
if (cifs_sb == NULL)
return;
tcon = cifs_sb->tcon;
if (tcon == NULL)
return;
tcon = cifs_sb_tcon(cifs_sb);
read_lock(&cifs_tcp_ses_lock);
if ((tcon->tc_count > 1) || (tcon->tidStatus == CifsExiting)) {