linux-kernel - [PATCH] init, Documentation: Remove ramdisk

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Date:	Wed, 23 Dec 2015 18:28:49 -0600
From:	Robert Elliott <elliott@....com>
To:	corbet@....net, axboe@...nel.dk, fabf@...net.be
Cc:	rdunlap@...radead.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, Robert Elliott <elliott@....com>
Subject: [PATCH] init, Documentation: Remove ramdisk_blocksize mentions

The brd driver has never supported the ramdisk_blocksize kernel
parameter that was in the rd driver it replaced, so remove
mention of this parameter from comments and Documentation.

Commit 9db5579be4bb ("rewrite rd") replaced rd with brd, keeping
a brd_blocksize variable in struct brd_device but never using it.

Commit a2cba2913c76 ("brd: get rid of unused members from struct
brd_device") removed the unused variable.

Commit f5abc8e75815 ("Documentation/blockdev/ramdisk.txt: updates")
removed mentions of ramdisk_blocksize from that file.

Signed-off-by: Robert Elliott <elliott@....com>
---
 Documentation/kernel-parameters.txt | 3 ---
 init/do_mounts_rd.c                 | 7 -------
 2 files changed, 10 deletions(-)

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 742f69d..461686e 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -3050,9 +3050,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 	raid=		[HW,RAID]
 			See Documentation/md.txt.
 
-	ramdisk_blocksize=	[RAM]
-			See Documentation/blockdev/ramdisk.txt.
-
 	ramdisk_size=	[RAM] Sizes of RAM disks in kilobytes
 			See Documentation/blockdev/ramdisk.txt.
 
diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c
index e5d059e..8a09b32 100644
--- a/init/do_mounts_rd.c
+++ b/init/do_mounts_rd.c
@@ -216,13 +216,6 @@ int __init rd_load_image(char *from)
 	/*
 	 * NOTE NOTE: nblocks is not actually blocks but
 	 * the number of kibibytes of data to load into a ramdisk.
-	 * So any ramdisk block size that is a multiple of 1KiB should
-	 * work when the appropriate ramdisk_blocksize is specified
-	 * on the command line.
-	 *
-	 * The default ramdisk_blocksize is 1KiB and it is generally
-	 * silly to use anything else, so make sure to use 1KiB
-	 * blocksize while generating ext2fs ramdisk-images.
 	 */
 	if (sys_ioctl(out_fd, BLKGETSIZE, (unsigned long)&rd_blocks) < 0)
 		rd_blocks = 0;
-- 
2.4.3

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