[PATCH] btrfs-progs: btrfs_scan_block_devices is unused function delete it

[Anand Jain <anand.jain@oracle.com>]

After Patch:
 remove BTRFS_SCAN_PROC scan method
There isn't any consumer for btrfs_scan_block_devices() so delete it.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
---
 utils.c | 83 -----------------------------------------------------------------
 utils.h |  1 -
 2 files changed, 84 deletions(-)

diff --git a/utils.c b/utils.c
index 48d2d9a..b23f332 100644
--- a/utils.c
+++ b/utils.c
@@ -1542,89 +1542,6 @@ int set_label(const char *btrfs_dev, const char *label)
 	return ret;
 }
 
-int btrfs_scan_block_devices(int run_ioctl)
-{
-
-	struct stat st;
-	int ret;
-	int fd;
-	struct btrfs_fs_devices *tmp_devices;
-	u64 num_devices;
-	FILE *proc_partitions;
-	int i;
-	char buf[1024];
-	char fullpath[110];
-	int scans = 0;
-	int special;
-
-scan_again:
-	proc_partitions = fopen("/proc/partitions","r");
-	if (!proc_partitions) {
-		fprintf(stderr, "Unable to open '/proc/partitions' for scanning\n");
-		return -ENOENT;
-	}
-	/* skip the header */
-	for (i = 0; i < 2; i++)
-		if (!fgets(buf, 1023, proc_partitions)) {
-			fprintf(stderr,
-				"Unable to read '/proc/partitions' for scanning\n");
-			fclose(proc_partitions);
-			return -ENOENT;
-		}
-
-	strcpy(fullpath,"/dev/");
-	while(fgets(buf, 1023, proc_partitions)) {
-		i = sscanf(buf," %*d %*d %*d %99s", fullpath+5);
-
-		/*
-		 * multipath and MD devices may register as a btrfs filesystem
-		 * both through the original block device and through
-		 * the special (/dev/mapper or /dev/mdX) entry.
-		 * This scans the special entries last
-		 */
-		special = strncmp(fullpath, "/dev/dm-", strlen("/dev/dm-")) == 0;
-		if (!special)
-			special = strncmp(fullpath, "/dev/md", strlen("/dev/md")) == 0;
-
-		if (scans == 0 && special)
-			continue;
-		if (scans > 0 && !special)
-			continue;
-
-		ret = lstat(fullpath, &st);
-		if (ret < 0) {
-			fprintf(stderr, "failed to stat %s\n", fullpath);
-			continue;
-		}
-		if (!S_ISBLK(st.st_mode)) {
-			continue;
-		}
-
-		fd = open(fullpath, O_RDONLY);
-		if (fd < 0) {
-			if (errno != ENOMEDIUM)
-				fprintf(stderr, "failed to open %s: %s\n",
-					fullpath, strerror(errno));
-			continue;
-		}
-		ret = btrfs_scan_one_device(fd, fullpath, &tmp_devices,
-					    &num_devices,
-					    BTRFS_SUPER_INFO_OFFSET, 0);
-		if (ret == 0 && run_ioctl > 0) {
-			btrfs_register_one_device(fullpath);
-		}
-		close(fd);
-	}
-
-	fclose(proc_partitions);
-
-	if (scans == 0) {
-		scans++;
-		goto scan_again;
-	}
-	return 0;
-}
-
 /*
  * A not-so-good version fls64. No fascinating optimization since
  * no one except parse_size use it
diff --git a/utils.h b/utils.h
index 1536469..e332fd1 100644
--- a/utils.h
+++ b/utils.h
@@ -100,7 +100,6 @@ int pretty_size_snprintf(u64 size, char *str, size_t str_bytes, unsigned unit_mo
 	})
 
 int get_mountpt(char *dev, char *mntpt, size_t size);
-int btrfs_scan_block_devices(int run_ioctl);
 u64 parse_size(char *s);
 u64 arg_strtou64(const char *str);
 int open_file_or_dir(const char *fname, DIR **dirstream);
-- 
2.0.0.153.g79dcccc