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authorJeff Layton <jlayton@redhat.com>2010-09-20 16:01:35 -0700
committerSteve French <sfrench@us.ibm.com>2010-09-29 19:04:33 +0000
commit0d424ad0a4b8c08e45928bccfa5b4b240097b01b (patch)
tree40f383b138d2e8121cda4b28f1f7c4b9642fe5ec
parentf6acb9d0596889a774e142ed76cb05b90d9763d2 (diff)
downloadop-kernel-dev-0d424ad0a4b8c08e45928bccfa5b4b240097b01b.zip
op-kernel-dev-0d424ad0a4b8c08e45928bccfa5b4b240097b01b.tar.gz
cifs: add cifs_sb_master_tcon and convert some callers to use it
At mount time, we'll always need to create a tcon that will serve as a template for others that are associated with the mount. This tcon is known as the "master" tcon. In some cases, we'll need to use that tcon regardless of who's accessing the mount. Add an accessor function for the master tcon and go ahead and switch the appropriate places to use it. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
-rw-r--r--fs/cifs/cifsfs.c6
-rw-r--r--fs/cifs/cifsglob.h7
-rw-r--r--fs/cifs/connect.c4
-rw-r--r--fs/cifs/dir.c10
-rw-r--r--fs/cifs/fscache.c12
-rw-r--r--fs/cifs/inode.c29
-rw-r--r--fs/cifs/misc.c2
-rw-r--r--fs/cifs/readdir.c4
8 files changed, 42 insertions, 32 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index b9624ab..898d2a5 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -222,7 +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(cifs_sb);
+ struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
int rc = -EOPNOTSUPP;
int xid;
@@ -364,7 +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(cifs_sb);
+ struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
struct sockaddr *srcaddr;
srcaddr = (struct sockaddr *)&tcon->ses->server->srcaddr;
@@ -455,7 +455,7 @@ static void cifs_umount_begin(struct super_block *sb)
if (cifs_sb == NULL)
return;
- tcon = cifs_sb_tcon(cifs_sb);
+ tcon = cifs_sb_master_tcon(cifs_sb);
read_lock(&cifs_tcp_ses_lock);
if ((tcon->tc_count > 1) || (tcon->tidStatus == CifsExiting)) {
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index cc8300c..c265ebd 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -419,6 +419,13 @@ cifs_sb_tcon(struct cifs_sb_info *cifs_sb)
return cifs_sb->ptcon;
}
+/* This function is always expected to succeed */
+static inline struct cifsTconInfo *
+cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb)
+{
+ return cifs_sb->ptcon;
+}
+
static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb)
{
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index b4bacea..f6a3091 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -3025,9 +3025,9 @@ cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb)
{
int rc = 0;
char *tmp;
+ struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
- if (cifs_sb_tcon(cifs_sb))
- cifs_put_tcon(cifs_sb_tcon(cifs_sb));
+ cifs_put_tcon(tcon);
cifs_sb->ptcon = NULL;
tmp = cifs_sb->prepath;
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index f660a15..fe02435 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -54,18 +54,18 @@ build_path_from_dentry(struct dentry *direntry)
int dfsplen;
char *full_path;
char dirsep;
- struct cifs_sb_info *cifs_sb;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb);
+ struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
if (direntry == NULL)
return NULL; /* not much we can do if dentry is freed and
we need to reopen the file after it was closed implicitly
when the server crashed */
- cifs_sb = CIFS_SB(direntry->d_sb);
dirsep = CIFS_DIR_SEP(cifs_sb);
pplen = cifs_sb->prepathlen;
- if (cifs_sb_tcon(cifs_sb) && (cifs_sb_tcon(cifs_sb)->Flags & SMB_SHARE_IS_IN_DFS))
- dfsplen = strnlen(cifs_sb_tcon(cifs_sb)->treeName, MAX_TREE_SIZE + 1);
+ if (tcon->Flags & SMB_SHARE_IS_IN_DFS)
+ dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1);
else
dfsplen = 0;
cifs_bp_rename_retry:
@@ -117,7 +117,7 @@ cifs_bp_rename_retry:
/* BB test paths to Windows with '/' in the midst of prepath */
if (dfsplen) {
- strncpy(full_path, cifs_sb_tcon(cifs_sb)->treeName, dfsplen);
+ strncpy(full_path, tcon->treeName, dfsplen);
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) {
int i;
for (i = 0; i < dfsplen; i++) {
diff --git a/fs/cifs/fscache.c b/fs/cifs/fscache.c
index ec4318b0..a2ad94e 100644
--- a/fs/cifs/fscache.c
+++ b/fs/cifs/fscache.c
@@ -62,15 +62,15 @@ static void cifs_fscache_enable_inode_cookie(struct inode *inode)
{
struct cifsInodeInfo *cifsi = CIFS_I(inode);
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+ struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
if (cifsi->fscache)
return;
- cifsi->fscache = fscache_acquire_cookie(cifs_sb_tcon(cifs_sb)->fscache,
- &cifs_fscache_inode_object_def,
- cifsi);
- cFYI(1, "CIFS: got FH cookie (0x%p/0x%p)",
- cifs_sb_tcon(cifs_sb)->fscache, cifsi->fscache);
+ cifsi->fscache = fscache_acquire_cookie(tcon->fscache,
+ &cifs_fscache_inode_object_def, cifsi);
+ cFYI(1, "CIFS: got FH cookie (0x%p/0x%p)", tcon->fscache,
+ cifsi->fscache);
}
void cifs_fscache_release_inode_cookie(struct inode *inode)
@@ -118,7 +118,7 @@ void cifs_fscache_reset_inode_cookie(struct inode *inode)
fscache_relinquish_cookie(cifsi->fscache, 1);
cifsi->fscache = fscache_acquire_cookie(
- cifs_sb_tcon(cifs_sb)->fscache,
+ cifs_sb_master_tcon(cifs_sb)->fscache,
&cifs_fscache_inode_object_def,
cifsi);
cFYI(1, "CIFS: new cookie 0x%p oldcookie 0x%p",
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index dce2d59..da716d9 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -52,7 +52,7 @@ static void cifs_set_ops(struct inode *inode, const bool is_dfs_referral)
/* check if server can support readpages */
- if (cifs_sb_tcon(cifs_sb)->ses->server->maxBuf <
+ if (cifs_sb_master_tcon(cifs_sb)->ses->server->maxBuf <
PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE)
inode->i_data.a_ops = &cifs_addr_ops_smallbuf;
else
@@ -476,6 +476,8 @@ static void
cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
struct cifs_sb_info *cifs_sb, bool adjust_tz)
{
+ struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
+
memset(fattr, 0, sizeof(*fattr));
fattr->cf_cifsattrs = le32_to_cpu(info->Attributes);
if (info->DeletePending)
@@ -490,8 +492,8 @@ cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime);
if (adjust_tz) {
- fattr->cf_ctime.tv_sec += cifs_sb_tcon(cifs_sb)->ses->server->timeAdj;
- fattr->cf_mtime.tv_sec += cifs_sb_tcon(cifs_sb)->ses->server->timeAdj;
+ fattr->cf_ctime.tv_sec += tcon->ses->server->timeAdj;
+ fattr->cf_mtime.tv_sec += tcon->ses->server->timeAdj;
}
fattr->cf_eof = le64_to_cpu(info->EndOfFile);
@@ -698,6 +700,7 @@ char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb)
int pplen = cifs_sb->prepathlen;
int dfsplen;
char *full_path = NULL;
+ struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
/* if no prefix path, simply set path to the root of share to "" */
if (pplen == 0) {
@@ -707,8 +710,8 @@ char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb)
return full_path;
}
- if (cifs_sb_tcon(cifs_sb) && (cifs_sb_tcon(cifs_sb)->Flags & SMB_SHARE_IS_IN_DFS))
- dfsplen = strnlen(cifs_sb_tcon(cifs_sb)->treeName, MAX_TREE_SIZE + 1);
+ if (tcon->Flags & SMB_SHARE_IS_IN_DFS)
+ dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1);
else
dfsplen = 0;
@@ -717,7 +720,7 @@ char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb)
return full_path;
if (dfsplen) {
- strncpy(full_path, cifs_sb_tcon(cifs_sb)->treeName, dfsplen);
+ strncpy(full_path, tcon->treeName, dfsplen);
/* switch slash direction in prepath depending on whether
* windows or posix style path names
*/
@@ -831,18 +834,18 @@ retry_iget5_locked:
struct inode *cifs_root_iget(struct super_block *sb, unsigned long ino)
{
int xid;
- struct cifs_sb_info *cifs_sb;
+ struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
struct inode *inode = NULL;
long rc;
char *full_path;
+ struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
- cifs_sb = CIFS_SB(sb);
full_path = cifs_build_path_to_root(cifs_sb);
if (full_path == NULL)
return ERR_PTR(-ENOMEM);
xid = GetXid();
- if (cifs_sb_tcon(cifs_sb)->unix_ext)
+ if (tcon->unix_ext)
rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid);
else
rc = cifs_get_inode_info(&inode, full_path, NULL, sb,
@@ -853,10 +856,10 @@ struct inode *cifs_root_iget(struct super_block *sb, unsigned long ino)
#ifdef CONFIG_CIFS_FSCACHE
/* populate tcon->resource_id */
- cifs_sb_tcon(cifs_sb)->resource_id = CIFS_I(inode)->uniqueid;
+ tcon->resource_id = CIFS_I(inode)->uniqueid;
#endif
- if (rc && cifs_sb_tcon(cifs_sb)->ipc) {
+ if (rc && tcon->ipc) {
cFYI(1, "ipc connection - fake read inode");
inode->i_mode |= S_IFDIR;
inode->i_nlink = 2;
@@ -1661,7 +1664,7 @@ int cifs_revalidate_dentry(struct dentry *dentry)
"jiffies %ld", full_path, inode, inode->i_count.counter,
dentry, dentry->d_time, jiffies);
- if (cifs_sb_tcon(CIFS_SB(sb))->unix_ext)
+ if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext)
rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid);
else
rc = cifs_get_inode_info(&inode, full_path, NULL, sb,
@@ -2087,7 +2090,7 @@ cifs_setattr(struct dentry *direntry, struct iattr *attrs)
{
struct inode *inode = direntry->d_inode;
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
- struct cifsTconInfo *pTcon = cifs_sb_tcon(cifs_sb);
+ struct cifsTconInfo *pTcon = cifs_sb_master_tcon(cifs_sb);
if (pTcon->unix_ext)
return cifs_setattr_unix(direntry, attrs);
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index c5cbfdb..252f276 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -729,6 +729,6 @@ cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb)
"properly. Hardlinks will not be recognized on this "
"mount. Consider mounting with the \"noserverino\" "
"option to silence this message.",
- cifs_sb_tcon(cifs_sb)->treeName);
+ cifs_sb_master_tcon(cifs_sb)->treeName);
}
}
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 3efc242..887a7e2 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -102,7 +102,7 @@ cifs_readdir_lookup(struct dentry *parent, struct qstr *name,
return NULL;
}
- if (cifs_sb_tcon(CIFS_SB(sb))->nocase)
+ if (cifs_sb_master_tcon(CIFS_SB(sb))->nocase)
dentry->d_op = &cifs_ci_dentry_ops;
else
dentry->d_op = &cifs_dentry_ops;
@@ -171,7 +171,7 @@ static void
cifs_std_info_to_fattr(struct cifs_fattr *fattr, FIND_FILE_STANDARD_INFO *info,
struct cifs_sb_info *cifs_sb)
{
- int offset = cifs_sb_tcon(cifs_sb)->ses->server->timeAdj;
+ int offset = cifs_sb_master_tcon(cifs_sb)->ses->server->timeAdj;
memset(fattr, 0, sizeof(*fattr));
fattr->cf_atime = cnvrtDosUnixTm(info->LastAccessDate,
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