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btrfs: prevent RCU warning when dereferencing radix tree slot

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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>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Sasha Levin 2014-06-11 12:00:25 -04:00 committed by Chris Mason
parent 5fbc7c59fd
commit f1e3c28949
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/tests/btrfs-tests.c
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@ -135,7 +135,7 @@ static void btrfs_free_dummy_fs_info(struct btrfs_fs_info *fs_info)
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 */