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authorJohn Crispin <john@phrozen.org>2016-12-25 20:11:34 +0100
committerJohn Crispin <john@phrozen.org>2017-08-05 08:46:36 +0200
commit74d00a8c3849c1340efd713eb94b786e304c201f (patch)
treede481743de61c34da96ab5f9dba3af3edcfb8260 /target/linux/generic/pending-3.18/080-21-fib_trie-Fall-back-to-slen-update-on-inflate-halve-f.patch
parentde350550ef648d9728351b986b0516fa29465c45 (diff)
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kernel: split patches folder up into backport, pending and hack folders
* properly format/comment all patches * merge debloat patches * merge Kconfig patches * merge swconfig patches * merge hotplug patches * drop 200-fix_localversion.patch - upstream * drop 222-arm_zimage_none.patch - unused * drop 252-mv_cesa_depends.patch - no longer required * drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused * drop 661-fq_codel_keep_dropped_stats.patch - outdated * drop 702-phy_add_aneg_done_function.patch - upstream * drop 840-rtc7301.patch - unused * drop 841-rtc_pt7c4338.patch - upstream * drop 921-use_preinit_as_init.patch - unused * drop spio-gpio-old and gpio-mmc - unused Signed-off-by: John Crispin <john@phrozen.org>
Diffstat (limited to 'target/linux/generic/pending-3.18/080-21-fib_trie-Fall-back-to-slen-update-on-inflate-halve-f.patch')
-rw-r--r--target/linux/generic/pending-3.18/080-21-fib_trie-Fall-back-to-slen-update-on-inflate-halve-f.patch61
1 files changed, 61 insertions, 0 deletions
diff --git a/target/linux/generic/pending-3.18/080-21-fib_trie-Fall-back-to-slen-update-on-inflate-halve-f.patch b/target/linux/generic/pending-3.18/080-21-fib_trie-Fall-back-to-slen-update-on-inflate-halve-f.patch
new file mode 100644
index 0000000000..058b33bf9d
--- /dev/null
+++ b/target/linux/generic/pending-3.18/080-21-fib_trie-Fall-back-to-slen-update-on-inflate-halve-f.patch
@@ -0,0 +1,61 @@
+From: Alexander Duyck <alexander.h.duyck@redhat.com>
+Date: Thu, 22 Jan 2015 15:51:20 -0800
+Subject: [PATCH] fib_trie: Fall back to slen update on inflate/halve failure
+
+This change corrects an issue where if inflate or halve fails we were
+exiting the resize function without at least updating the slen for the
+node. To correct this I have moved the update of max_size into the while
+loop so that it is only decremented on a successful call to either inflate
+or halve.
+
+Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+
+--- a/net/ipv4/fib_trie.c
++++ b/net/ipv4/fib_trie.c
+@@ -752,7 +752,7 @@ static void resize(struct trie *t, struc
+ {
+ struct tnode *tp = node_parent(tn), *n = NULL;
+ struct tnode __rcu **cptr;
+- int max_work;
++ int max_work = MAX_WORK;
+
+ pr_debug("In tnode_resize %p inflate_threshold=%d threshold=%d\n",
+ tn, inflate_threshold, halve_threshold);
+@@ -775,8 +775,7 @@ static void resize(struct trie *t, struc
+ /* Double as long as the resulting node has a number of
+ * nonempty nodes that are above the threshold.
+ */
+- max_work = MAX_WORK;
+- while (should_inflate(tp, tn) && max_work--) {
++ while (should_inflate(tp, tn) && max_work) {
+ if (inflate(t, tn)) {
+ #ifdef CONFIG_IP_FIB_TRIE_STATS
+ this_cpu_inc(t->stats->resize_node_skipped);
+@@ -784,6 +783,7 @@ static void resize(struct trie *t, struc
+ break;
+ }
+
++ max_work--;
+ tn = rtnl_dereference(*cptr);
+ }
+
+@@ -794,8 +794,7 @@ static void resize(struct trie *t, struc
+ /* Halve as long as the number of empty children in this
+ * node is above threshold.
+ */
+- max_work = MAX_WORK;
+- while (should_halve(tp, tn) && max_work--) {
++ while (should_halve(tp, tn) && max_work) {
+ if (halve(t, tn)) {
+ #ifdef CONFIG_IP_FIB_TRIE_STATS
+ this_cpu_inc(t->stats->resize_node_skipped);
+@@ -803,6 +802,7 @@ static void resize(struct trie *t, struc
+ break;
+ }
+
++ max_work--;
+ tn = rtnl_dereference(*cptr);
+ }
+