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btrfs: zoned: remove redundant initialization of to_add 

to_add is being initialized to len but this is never read as to_add is
overwritten later on. Remove the redundant initialization.

Cleans up the following clang-analyzer warning:

fs/btrfs/extent-tree.c:2769:8: warning: Value stored to 'to_add' during
its initialization is never read [clang-analyzer-deadcode.DeadStores].

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Jiapeng Chong 2022-01-21 19:43:51 +08:00 committed by David Sterba
parent 823f8e5c1f
commit c4bf190999
1 changed files with 3 additions and 4 deletions
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7
fs/btrfs/extent-tree.c
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@ -2766,12 +2766,11 @@ static int unpin_extent_range(struct btrfs_fs_info *fs_info,
spin_unlock(&cache->lock);
if (!readonly && return_free_space &&
global_rsv->space_info == space_info) {
u64 to_add = len;
spin_lock(&global_rsv->lock);
if (!global_rsv->full) {
to_add = min(len, global_rsv->size -
global_rsv->reserved);
u64 to_add = min(len, global_rsv->size -
global_rsv->reserved);
global_rsv->reserved += to_add;
btrfs_space_info_update_bytes_may_use(fs_info,
space_info, to_add);