btrfs: simplify list initialization in btrfs_compr_pool_scan()

In btrfs_compr_pool_scan(), use LIST_HEAD() to declare and initialize
the 'remove' list_head in one step instead of using INIT_LIST_HEAD()
separately.

Signed-off-by: Baolin Liu <liubaolin@kylinos.cn>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index cdb5c891b0acf94e18b9c86dfe3b114b3b3ac77a..241a117ad7cc4b2187122c95545cd2501dc9255a 100644 (file)
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -192,15 +192,13 @@ static unsigned long btrfs_compr_pool_count(struct shrinker *sh, struct shrink_c
 
 static unsigned long btrfs_compr_pool_scan(struct shrinker *sh, struct shrink_control *sc)
 {
-       struct list_head remove;
+       LIST_HEAD(remove);
        struct list_head *tmp, *next;
        int freed;
 
        if (compr_pool.count == 0)
                return SHRINK_STOP;
 
-       INIT_LIST_HEAD(&remove);
-
        /* For now, just simply drain the whole list. */
        spin_lock(&compr_pool.lock);
        list_splice_init(&compr_pool.list, &remove);