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| author | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2012-03-27 14:52:44 +0100 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-04-17 13:27:28 -0400 |
| commit | b960d6c43a63ebd2d8518b328da3816b833ee8cc (patch) | |
| tree | 52ea6882e9b0c0fb3be12d348e730065f5b609d1 | |
| parent | e8e937be971d706061dc56220ff3605ab77622a7 (diff) | |
| download | btrfs-work-b960d6c43a63ebd2d8518b328da3816b833ee8cc.tar.gz | |
xen/p2m: m2p_find_override: use list_for_each_entry_safe
Use list_for_each_entry_safe and remove the spin_lock acquisition in
m2p_find_override.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| -rw-r--r-- | arch/x86/xen/p2m.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c index 1b267e75158d8..7ed8cc3434c5f 100644 --- a/arch/x86/xen/p2m.c +++ b/arch/x86/xen/p2m.c @@ -809,21 +809,17 @@ struct page *m2p_find_override(unsigned long mfn) { unsigned long flags; struct list_head *bucket = &m2p_overrides[mfn_hash(mfn)]; - struct page *p, *ret; + struct page *p, *t, *ret; ret = NULL; - spin_lock_irqsave(&m2p_override_lock, flags); - - list_for_each_entry(p, bucket, lru) { + list_for_each_entry_safe(p, t, bucket, lru) { if (page_private(p) == mfn) { ret = p; break; } } - spin_unlock_irqrestore(&m2p_override_lock, flags); - return ret; } |