diff mbox

btrfs: prevent RCU warning when dereferencing radix tree slot

Message ID 1402502425-17570-1-git-send-email-sasha.levin@oracle.com (mailing list archive)
State Accepted
Headers show

Commit Message

Sasha Levin June 11, 2014, 4 p.m. UTC
Mark the dereference as protected by lock. Not doing so triggers
an RCU warning since the radix tree assumed that RCU is in use.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
---
 fs/btrfs/tests/btrfs-tests.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/fs/btrfs/tests/btrfs-tests.c b/fs/btrfs/tests/btrfs-tests.c
index a5dcacb..9626252 100644
--- a/fs/btrfs/tests/btrfs-tests.c
+++ b/fs/btrfs/tests/btrfs-tests.c
@@ -135,7 +135,7 @@  restart:
 	radix_tree_for_each_slot(slot, &fs_info->buffer_radix, &iter, 0) {
 		struct extent_buffer *eb;
 
-		eb = radix_tree_deref_slot(slot);
+		eb = radix_tree_deref_slot_protected(slot, &fs_info->buffer_lock);
 		if (!eb)
 			continue;
 		/* Shouldn't happen but that kind of thinking creates CVE's */