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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-23 10:52:43 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-23 10:52:43 -0800 |
| commit | a307d0a0074c18bcbea5dec368c9f047be9dade3 (patch) | |
| tree | a55e2ebfe213a45f58ec492aadd0c32457015638 /fs/namespace.c | |
| parent | fc26901b12f1deedc351bbe9fd9a018d61485c57 (diff) | |
| parent | faf0dcebd7b387187f29ff811d47df465ea4c9f9 (diff) | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull final vfs updates from Al Viro:
"Assorted cleanups and fixes all over the place"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
sg_write()/bsg_write() is not fit to be called under KERNEL_DS
ufs: fix function declaration for ufs_truncate_blocks
fs: exec: apply CLOEXEC before changing dumpable task flags
seq_file: reset iterator to first record for zero offset
vfs: fix isize/pos/len checks for reflink & dedupe
[iov_iter] fix iterate_all_kinds() on empty iterators
move aio compat to fs/aio.c
reorganize do_make_slave()
clone_private_mount() doesn't need to touch namespace_sem
remove a bogus claim about namespace_sem being held by callers of mnt_alloc_id()
Diffstat (limited to 'fs/namespace.c')
| -rw-r--r-- | fs/namespace.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index f7e28f8ea04d..b5b1259e064f 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -96,10 +96,6 @@ static inline struct hlist_head *mp_hash(struct dentry *dentry) return &mountpoint_hashtable[tmp & mp_hash_mask]; } -/* - * allocation is serialized by namespace_sem, but we need the spinlock to - * serialize with freeing. - */ static int mnt_alloc_id(struct mount *mnt) { int res; @@ -1034,6 +1030,8 @@ static struct mount *clone_mnt(struct mount *old, struct dentry *root, if (IS_MNT_SLAVE(old)) list_add(&mnt->mnt_slave, &old->mnt_slave); mnt->mnt_master = old->mnt_master; + } else { + CLEAR_MNT_SHARED(mnt); } if (flag & CL_MAKE_SHARED) set_mnt_shared(mnt); @@ -1828,9 +1826,7 @@ struct vfsmount *clone_private_mount(const struct path *path) if (IS_MNT_UNBINDABLE(old_mnt)) return ERR_PTR(-EINVAL); - down_read(&namespace_sem); new_mnt = clone_mnt(old_mnt, path->dentry, CL_PRIVATE); - up_read(&namespace_sem); if (IS_ERR(new_mnt)) return ERR_CAST(new_mnt); |