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fs_is_visible only needs namespace_sem held shared
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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59aa0da8e2
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@ -2869,7 +2869,7 @@ bool fs_fully_visible(struct file_system_type *type)
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if (unlikely(!ns))
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if (unlikely(!ns))
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return false;
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return false;
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namespace_lock();
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down_read(&namespace_sem);
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list_for_each_entry(mnt, &ns->list, mnt_list) {
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list_for_each_entry(mnt, &ns->list, mnt_list) {
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struct mount *child;
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struct mount *child;
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if (mnt->mnt.mnt_sb->s_type != type)
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if (mnt->mnt.mnt_sb->s_type != type)
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@ -2890,7 +2890,7 @@ bool fs_fully_visible(struct file_system_type *type)
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next: ;
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next: ;
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}
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}
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found:
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found:
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namespace_unlock();
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up_read(&namespace_sem);
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return visible;
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return visible;
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}
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}
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