summaryrefslogtreecommitdiffstats
path: root/include/trace
diff options
context:
space:
mode:
authorElena Reshetova <elena.reshetova@intel.com>2017-03-03 10:55:13 +0200
committerDavid Sterba <dsterba@suse.com>2017-04-18 14:07:23 +0200
commite76edab7f059bc1047c1865141e2709d70e74852 (patch)
tree3769b9d48f59afa32d2e1be3ddce00508abcfb68 /include/trace
parent490b54d6fb75f6ffd0471ec58bb38a992e2b40cd (diff)
downloadop-kernel-dev-e76edab7f059bc1047c1865141e2709d70e74852.zip
op-kernel-dev-e76edab7f059bc1047c1865141e2709d70e74852.tar.gz
btrfs: convert btrfs_ordered_extent.refs from atomic_t to refcount_t
refcount_t type and corresponding API should be used instead of atomic_t when the variable is used as a reference counter. This allows to avoid accidental refcounter overflows that might lead to use-after-free situations. Signed-off-by: Elena Reshetova <elena.reshetova@intel.com> Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David Windsor <dwindsor@gmail.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/events/btrfs.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h
index 9dd29e8..8f206263 100644
--- a/include/trace/events/btrfs.h
+++ b/include/trace/events/btrfs.h
@@ -275,7 +275,7 @@ DECLARE_EVENT_CLASS(btrfs__ordered_extent,
__entry->bytes_left = ordered->bytes_left;
__entry->flags = ordered->flags;
__entry->compress_type = ordered->compress_type;
- __entry->refs = atomic_read(&ordered->refs);
+ __entry->refs = refcount_read(&ordered->refs);
__entry->root_objectid =
BTRFS_I(inode)->root->root_key.objectid;
__entry->truncated_len = ordered->truncated_len;
OpenPOWER on IntegriCloud