vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c
index 509fe1e..76741d8 100644
--- a/fs/autofs4/dev-ioctl.c
+++ b/fs/autofs4/dev-ioctl.c
@@ -194,7 +194,7 @@
return err;
err = -ENOENT;
while (path.dentry == path.mnt->mnt_root) {
- if (path.mnt->mnt_sb->s_magic == AUTOFS_SUPER_MAGIC) {
+ if (path.dentry->d_sb->s_magic == AUTOFS_SUPER_MAGIC) {
if (test(&path, data)) {
path_get(&path);
if (!err) /* already found some */
@@ -212,7 +212,7 @@
static int test_by_dev(struct path *path, void *p)
{
- return path->mnt->mnt_sb->s_dev == *(dev_t *)p;
+ return path->dentry->d_sb->s_dev == *(dev_t *)p;
}
static int test_by_type(struct path *path, void *p)
@@ -538,11 +538,11 @@
err = find_autofs_mount(name, &path, test_by_type, &type);
if (err)
goto out;
- devid = new_encode_dev(path.mnt->mnt_sb->s_dev);
+ devid = new_encode_dev(path.dentry->d_sb->s_dev);
err = 0;
if (path.mnt->mnt_root == path.dentry) {
err = 1;
- magic = path.mnt->mnt_sb->s_magic;
+ magic = path.dentry->d_sb->s_magic;
}
} else {
dev_t dev = sbi->sb->s_dev;
@@ -556,7 +556,7 @@
err = have_submounts(path.dentry);
if (follow_down_one(&path))
- magic = path.mnt->mnt_sb->s_magic;
+ magic = path.dentry->d_sb->s_magic;
}
param->ismountpoint.out.devid = devid;
diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
index 1e9edbd..a9198df 100644
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -560,7 +560,7 @@
break;
case 2: set_bit(Enabled, &e->flags);
break;
- case 3: root = dget(file->f_path.mnt->mnt_sb->s_root);
+ case 3: root = dget(file->f_path.dentry->d_sb->s_root);
mutex_lock(&root->d_inode->i_mutex);
kill_node(e);
@@ -587,7 +587,7 @@
Node *e;
struct inode *inode;
struct dentry *root, *dentry;
- struct super_block *sb = file->f_path.mnt->mnt_sb;
+ struct super_block *sb = file->f_path.dentry->d_sb;
int err = 0;
e = create_entry(buffer, count);
@@ -666,7 +666,7 @@
switch (res) {
case 1: enabled = 0; break;
case 2: enabled = 1; break;
- case 3: root = dget(file->f_path.mnt->mnt_sb->s_root);
+ case 3: root = dget(file->f_path.dentry->d_sb->s_root);
mutex_lock(&root->d_inode->i_mutex);
while (!list_empty(&entries))
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 668c931..7e8944e 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -2909,7 +2909,7 @@
return -EINVAL;
/* Quotafile not on the same filesystem? */
- if (path->mnt->mnt_sb != sb)
+ if (path->dentry->d_sb != sb)
return -EXDEV;
/* Journaling quota? */
if (EXT3_SB(sb)->s_qf_names[type]) {
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 2a1a9e6..b739b21 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4781,7 +4781,7 @@
return -EINVAL;
/* Quotafile not on the same filesystem? */
- if (path->mnt->mnt_sb != sb)
+ if (path->dentry->d_sb != sb)
return -EXDEV;
/* Journaling quota? */
if (EXT4_SB(sb)->s_qf_names[type]) {
diff --git a/fs/fhandle.c b/fs/fhandle.c
index 5eff711..a48e4a1 100644
--- a/fs/fhandle.c
+++ b/fs/fhandle.c
@@ -25,8 +25,8 @@
* We need t make sure wether the file system
* support decoding of the file handle
*/
- if (!path->mnt->mnt_sb->s_export_op ||
- !path->mnt->mnt_sb->s_export_op->fh_to_dentry)
+ if (!path->dentry->d_sb->s_export_op ||
+ !path->dentry->d_sb->s_export_op->fh_to_dentry)
return -EOPNOTSUPP;
if (copy_from_user(&f_handle, ufh, sizeof(struct file_handle)))
diff --git a/fs/lockd/svcsubs.c b/fs/lockd/svcsubs.c
index 1ca0679..2240d38 100644
--- a/fs/lockd/svcsubs.c
+++ b/fs/lockd/svcsubs.c
@@ -403,7 +403,7 @@
{
struct super_block *sb = datap;
- return sb == file->f_file->f_path.mnt->mnt_sb;
+ return sb == file->f_file->f_path.dentry->d_sb;
}
/**
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index c45a2ea..bb4a11d 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -272,7 +272,7 @@
* 2. Is that directory a mount point, or
* 3. Is that directory the root of an exported file system?
*/
- error = nlmsvc_unlock_all_by_sb(path.mnt->mnt_sb);
+ error = nlmsvc_unlock_all_by_sb(path.dentry->d_sb);
path_put(&path);
return error;
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 5d81e92..5ec59b2 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -2198,7 +2198,7 @@
if (error)
return error;
/* Quota file not on the same filesystem? */
- if (path->mnt->mnt_sb != sb)
+ if (path->dentry->d_sb != sb)
error = -EXDEV;
else
error = vfs_load_quota_inode(path->dentry->d_inode, type,
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 5a4cae7..1abffa4 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -2058,7 +2058,7 @@
return -EINVAL;
/* Quotafile not on the same filesystem? */
- if (path->mnt->mnt_sb != sb) {
+ if (path->dentry->d_sb != sb) {
err = -EXDEV;
goto out;
}
diff --git a/fs/sysv/itree.c b/fs/sysv/itree.c
index fa8d43c..90b54b4 100644
--- a/fs/sysv/itree.c
+++ b/fs/sysv/itree.c
@@ -442,7 +442,7 @@
int sysv_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
{
- struct super_block *s = mnt->mnt_sb;
+ struct super_block *s = dentry->d_sb;
generic_fillattr(dentry->d_inode, stat);
stat->blocks = (s->s_blocksize / 512) * sysv_nblocks(s, stat->size);
stat->blksize = s->s_blocksize;
diff --git a/init/do_mounts.c b/init/do_mounts.c
index 0f6e1d9..b2eee02 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -325,17 +325,19 @@
static int __init do_mount_root(char *name, char *fs, int flags, void *data)
{
+ struct super_block *s;
int err = sys_mount(name, "/root", fs, flags, data);
if (err)
return err;
sys_chdir((const char __user __force *)"/root");
- ROOT_DEV = current->fs->pwd.mnt->mnt_sb->s_dev;
+ s = current->fs->pwd.dentry->d_sb;
+ ROOT_DEV = s->s_dev;
printk(KERN_INFO
"VFS: Mounted root (%s filesystem)%s on device %u:%u.\n",
- current->fs->pwd.mnt->mnt_sb->s_type->name,
- current->fs->pwd.mnt->mnt_sb->s_flags & MS_RDONLY ?
- " readonly" : "", MAJOR(ROOT_DEV), MINOR(ROOT_DEV));
+ s->s_type->name,
+ s->s_flags & MS_RDONLY ? " readonly" : "",
+ MAJOR(ROOT_DEV), MINOR(ROOT_DEV));
return 0;
}
diff --git a/kernel/acct.c b/kernel/acct.c
index 8cba124..9663eb8 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -315,7 +315,7 @@
spin_lock(&acct_lock);
restart:
list_for_each_entry(acct, &acct_list, list)
- if (acct->file && acct->file->f_path.mnt->mnt_sb == sb) {
+ if (acct->file && acct->file->f_path.dentry->d_sb == sb) {
acct_file_reopen(acct, NULL, NULL);
goto restart;
}
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 4def4d9..57546cf 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -2507,7 +2507,7 @@
const struct cred *cred = current_cred();
if (flags & MS_REMOUNT)
- return superblock_has_perm(cred, path->mnt->mnt_sb,
+ return superblock_has_perm(cred, path->dentry->d_sb,
FILESYSTEM__REMOUNT, NULL);
else
return path_has_perm(cred, path, FILE__MOUNTON);
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 7db62b4..e8af5b0b 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -406,7 +406,7 @@
static int smack_sb_mount(char *dev_name, struct path *path,
char *type, unsigned long flags, void *data)
{
- struct superblock_smack *sbp = path->mnt->mnt_sb->s_security;
+ struct superblock_smack *sbp = path->dentry->d_sb->s_security;
struct smk_audit_info ad;
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
@@ -435,7 +435,7 @@
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
smk_ad_setfield_u_fs_path(&ad, path);
- sbp = mnt->mnt_sb->s_security;
+ sbp = path.dentry->d_sb->s_security;
return smk_curacc(sbp->smk_floor, MAY_WRITE, &ad);
}