diff options
| -rw-r--r-- | fs/namespace.c | 2 | ||||
| -rw-r--r-- | fs/super.c | 6 | ||||
| -rw-r--r-- | include/linux/fs.h | 1 |
3 files changed, 8 insertions, 1 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index f20cb57d1067..bfe3f3e98597 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1996,7 +1996,7 @@ long do_mount(char *dev_name, char *dir_name, char *type_page, if (flags & MS_RDONLY) mnt_flags |= MNT_READONLY; - flags &= ~(MS_NOSUID | MS_NOEXEC | MS_NODEV | MS_ACTIVE | + flags &= ~(MS_NOSUID | MS_NOEXEC | MS_NODEV | MS_ACTIVE | MS_BORN | MS_NOATIME | MS_NODIRATIME | MS_RELATIME| MS_KERNMOUNT | MS_STRICTATIME); diff --git a/fs/super.c b/fs/super.c index 1527e6a0ee35..53040a673bf2 100644 --- a/fs/super.c +++ b/fs/super.c @@ -356,6 +356,11 @@ retry: if (s) { up_write(&s->s_umount); destroy_super(s); + s = NULL; + } + if (unlikely(!(old->s_flags & MS_BORN))) { + deactivate_locked_super(old); + goto retry; } return old; } @@ -957,6 +962,7 @@ vfs_kern_mount(struct file_system_type *type, int flags, const char *name, void goto out_free_secdata; BUG_ON(!mnt->mnt_sb); WARN_ON(!mnt->mnt_sb->s_bdi); + mnt->mnt_sb->s_flags |= MS_BORN; error = security_sb_kern_mount(mnt->mnt_sb, flags, secdata); if (error) diff --git a/include/linux/fs.h b/include/linux/fs.h index e93529db4888..8aa6bd9ddc09 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -209,6 +209,7 @@ struct inodes_stat_t { #define MS_KERNMOUNT (1<<22) /* this is a kern_mount call */ #define MS_I_VERSION (1<<23) /* Update inode I_version field */ #define MS_STRICTATIME (1<<24) /* Always perform atime updates */ +#define MS_BORN (1<<29) #define MS_ACTIVE (1<<30) #define MS_NOUSER (1<<31) |