linux-kernel - [PATCH] btrfs: scrub: Remove some unused functions

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Message-Id: <20230512054457.43501-1-jiapeng.chong@linux.alibaba.com>
Date:   Fri, 12 May 2023 13:44:57 +0800
From:   Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
To:     clm@...com
Cc:     josef@...icpanda.com, dsterba@...e.com,
        linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>,
        Abaci Robot <abaci@...ux.alibaba.com>
Subject: [PATCH] btrfs: scrub: Remove some unused functions

These functions are defined in the scrub.c file, but not called
elsewhere, so delete these unused functions.

fs/btrfs/scrub.c:553:20: warning: unused function 'scrub_stripe_index_and_offset'.
fs/btrfs/scrub.c:543:19: warning: unused function 'scrub_nr_raid_mirrors'.

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=4937
Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
---
 fs/btrfs/scrub.c | 42 ------------------------------------------
 1 file changed, 42 deletions(-)

diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 836725a19661..6fd90c8fd64a 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -540,48 +540,6 @@ static void scrub_print_common_warning(const char *errstr, struct btrfs_device *
 	btrfs_free_path(path);
 }
 
-static inline int scrub_nr_raid_mirrors(struct btrfs_io_context *bioc)
-{
-	if (bioc->map_type & BTRFS_BLOCK_GROUP_RAID5)
-		return 2;
-	else if (bioc->map_type & BTRFS_BLOCK_GROUP_RAID6)
-		return 3;
-	else
-		return (int)bioc->num_stripes;
-}
-
-static inline void scrub_stripe_index_and_offset(u64 logical, u64 map_type,
-						 u64 full_stripe_logical,
-						 int nstripes, int mirror,
-						 int *stripe_index,
-						 u64 *stripe_offset)
-{
-	int i;
-
-	if (map_type & BTRFS_BLOCK_GROUP_RAID56_MASK) {
-		const int nr_data_stripes = (map_type & BTRFS_BLOCK_GROUP_RAID5) ?
-					    nstripes - 1 : nstripes - 2;
-
-		/* RAID5/6 */
-		for (i = 0; i < nr_data_stripes; i++) {
-			const u64 data_stripe_start = full_stripe_logical +
-						(i * BTRFS_STRIPE_LEN);
-
-			if (logical >= data_stripe_start &&
-			    logical < data_stripe_start + BTRFS_STRIPE_LEN)
-				break;
-		}
-
-		*stripe_index = i;
-		*stripe_offset = (logical - full_stripe_logical) &
-				 BTRFS_STRIPE_LEN_MASK;
-	} else {
-		/* The other RAID type */
-		*stripe_index = mirror;
-		*stripe_offset = 0;
-	}
-}
-
 static int fill_writer_pointer_gap(struct scrub_ctx *sctx, u64 physical)
 {
 	int ret = 0;
-- 
2.20.1.7.g153144c