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new helpers: lock_mount_hash/unlock_mount_hash

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aka br_write_{lock,unlock} of vfsmount_lock.  Inlines in fs/mount.h,
vfsmount_lock extern moved over there as well.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2013-09-29 11:24:49 -04:00
parent aab407fc5c
commit 719ea2fbb5
5 changed files with 64 additions and 54 deletions
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4
fs/pnode.c
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@@ -264,12 +264,12 @@ int propagate_mnt(struct mount *dest_mnt, struct mountpoint *dest_mp,
prev_src_mnt = child;
}
out:
br_write_lock(&vfsmount_lock);
lock_mount_hash();
while (!list_empty(&tmp_list)) {
child = list_first_entry(&tmp_list, struct mount, mnt_hash);
umount_tree(child, 0);
}
br_write_unlock(&vfsmount_lock);
unlock_mount_hash();
return ret;
}