[PATCH 02/17] fs_is_visible only needs namespace_sem held shared

[Al Viro]

Signed-off-by: Al Viro <v...@zeniv.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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