linux-kernel - [PATCH 02/17] fs_is_visible only needs namespace

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Date:	Thu, 03 Oct 2013 07:17:46 +0100
From:	Al Viro <viro@....linux.org.uk>
To:	torvalds@...ux-foundation.org
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 02/17] fs_is_visible only needs namespace_sem held shared


Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 fs/namespace.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/namespace.c b/fs/namespace.c
index 6d73d3a..f6b7010 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2873,7 +2873,7 @@ bool fs_fully_visible(struct file_system_type *type)
 	if (unlikely(!ns))
 		return false;
 
-	namespace_lock();
+	down_read(&namespace_sem);
 	list_for_each_entry(mnt, &ns->list, mnt_list) {
 		struct mount *child;
 		if (mnt->mnt.mnt_sb->s_type != type)
@@ -2894,7 +2894,7 @@ bool fs_fully_visible(struct file_system_type *type)
 	next:	;
 	}
 found:
-	namespace_unlock();
+	up_read(&namespace_sem);
 	return visible;
 }
 
-- 
1.7.2.5


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