diff options
| author | David S. Miller <davem@davemloft.net> | 2010-04-11 14:53:53 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-04-11 14:53:53 -0700 |
| commit | 871039f02f8ec4ab2e5e9010718caa8e085786f1 (patch) | |
| tree | f0d2b3127fc48c862967d68c46c2d46668137515 /lib/radix-tree.c | |
| parent | e4077e018b5ead3de9951fc01d8bf12eeeeeefed (diff) | |
| parent | 4a1032faac94ebbf647460ae3e06fc21146eb280 (diff) | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/stmmac/stmmac_main.c
drivers/net/wireless/wl12xx/wl1271_cmd.c
drivers/net/wireless/wl12xx/wl1271_main.c
drivers/net/wireless/wl12xx/wl1271_spi.c
net/core/ethtool.c
net/mac80211/scan.c
Diffstat (limited to 'lib/radix-tree.c')
| -rw-r--r-- | lib/radix-tree.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/lib/radix-tree.c b/lib/radix-tree.c index 6b9670d6bbf9..2a087e0f9863 100644 --- a/lib/radix-tree.c +++ b/lib/radix-tree.c @@ -28,7 +28,6 @@ #include <linux/slab.h> #include <linux/notifier.h> #include <linux/cpu.h> -#include <linux/gfp.h> #include <linux/string.h> #include <linux/bitops.h> #include <linux/rcupdate.h> @@ -556,6 +555,10 @@ EXPORT_SYMBOL(radix_tree_tag_clear); * * 0: tag not present or not set * 1: tag set + * + * Note that the return value of this function may not be relied on, even if + * the RCU lock is held, unless tag modification and node deletion are excluded + * from concurrency. */ int radix_tree_tag_get(struct radix_tree_root *root, unsigned long index, unsigned int tag) @@ -596,12 +599,8 @@ int radix_tree_tag_get(struct radix_tree_root *root, */ if (!tag_get(node, tag, offset)) saw_unset_tag = 1; - if (height == 1) { - int ret = tag_get(node, tag, offset); - - BUG_ON(ret && saw_unset_tag); - return !!ret; - } + if (height == 1) + return !!tag_get(node, tag, offset); node = rcu_dereference_raw(node->slots[offset]); shift -= RADIX_TREE_MAP_SHIFT; height--; |