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btrfs: prevent RCU warning when dereferencing radix tree slot 

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>
hifive-unleashed-5.1
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 @@ 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 */