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authorEric W. Biederman <ebiederm@xmission.com>2016-06-09 23:44:48 +0300
committerEric W. Biederman <ebiederm@xmission.com>2016-06-23 23:47:31 +0300
commitcc50a07a247e17db76b1f0b0ca06652556e04fa3 (patch)
tree64060a2d84ef06285de1f1a13008899dec16a2dc /fs/devpts
parent67690f937c38bbab1d94cb45f6a32e61612834ae (diff)
downloadlinux-cc50a07a247e17db76b1f0b0ca06652556e04fa3.tar.xz
userns: Remove the now unnecessary FS_USERNS_DEV_MOUNT flag
Now that SB_I_NODEV controls the nodev behavior devpts can just clear this flag during mount. Simplifying the code and making it easier to audit how the code works. While still preserving the invariant that s_iflags is only modified during mount. Acked-by: Seth Forshee <seth.forshee@canonical.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'fs/devpts')
-rw-r--r--fs/devpts/inode.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c
index 37c134a132c7..d116453b0276 100644
--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -396,6 +396,7 @@ devpts_fill_super(struct super_block *s, void *data, int silent)
{
struct inode *inode;
+ s->s_iflags &= ~SB_I_NODEV;
s->s_blocksize = 1024;
s->s_blocksize_bits = 10;
s->s_magic = DEVPTS_SUPER_MAGIC;
@@ -480,7 +481,7 @@ static struct file_system_type devpts_fs_type = {
.name = "devpts",
.mount = devpts_mount,
.kill_sb = devpts_kill_sb,
- .fs_flags = FS_USERNS_MOUNT | FS_USERNS_DEV_MOUNT,
+ .fs_flags = FS_USERNS_MOUNT,
};
/*