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btrfs: fix uninitialized variable warnings in __set_extent_bit and convert_extent_bit

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We will pass in the parent and p pointer into our tree_search function
to avoid doing a second search when inserting a new extent state into
the tree.  However because this is conditional upon passing in these
pointers the compiler seems to think these values can be uninitialized
if we're using -Wmaybe-uninitialized.  Fix this by initializing these
values.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2022-12-16 15:15:55 -05:00 committed by David Sterba
parent efbf35a102
commit 598643250c
1 changed files with 4 additions and 4 deletions
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8
fs/btrfs/extent-io-tree.c
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@ -972,8 +972,8 @@ static int __set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
{
struct extent_state *state;
struct extent_state *prealloc = NULL;
struct rb_node **p;
struct rb_node *parent;
struct rb_node **p = NULL;
struct rb_node *parent = NULL;
int err = 0;
u64 last_start;
u64 last_end;
@ -1218,8 +1218,8 @@ int convert_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
{
struct extent_state *state;
struct extent_state *prealloc = NULL;
struct rb_node **p;
struct rb_node *parent;
struct rb_node **p = NULL;
struct rb_node *parent = NULL;
int err = 0;
u64 last_start;
u64 last_end;