All of lore.kernel.org
 help / color / mirror / Atom feed
From: Venkatraman S <venkat@linaro.org>
To: <kzak@redhat.com>
Cc: <util-linux@vger.kernel.org>, <arnd.bergmann@linaro.org>,
	Venkatraman S <venkat@linaro.org>
Subject: [RFC PATCH 3/4] mkswap: Add additional fields in swapheader
Date: Mon, 22 Oct 2012 22:27:26 +0530	[thread overview]
Message-ID: <1350925048-31084-4-git-send-email-venkat@linaro.org> (raw)
In-Reply-To: <1350925048-31084-1-git-send-email-venkat@linaro.org>

Use the padding section to add useful information in
swap header. This is backward compatible with
SWAPSPACE2 headers.

Signed-off-by: Venkatraman S <venkat@linaro.org>
---
 include/swapheader.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/include/swapheader.h b/include/swapheader.h
index 42d521a..90d13ef 100644
--- a/include/swapheader.h
+++ b/include/swapheader.h
@@ -21,7 +21,12 @@ struct swap_header_v1_2 {
 	unsigned int  nr_badpages;
 	unsigned char uuid[SWAP_UUID_LENGTH];
 	char	      volume_name[SWAP_LABEL_LENGTH];
-	unsigned int  padding[117];
+	union {
+		struct {
+			unsigned int erase_blk_size;
+		} blkdevinfo;
+		unsigned int  padding[117];
+	} swp_headerinfo ;
 	unsigned int  badpages[1];
 };
 
-- 
1.7.11.1.25.g0e18bef


  parent reply	other threads:[~2012-10-22 17:00 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-22 16:57 [RFC PATCH 0/4] Adding useful information into swap partition header Venkatraman S
2012-10-22 16:57 ` [RFC PATCH 1/4] libblkid/topology: add preferred_erase_size to topology probe Venkatraman S
2012-10-22 16:57 ` [RFC PATCH 2/4] mkswap: refactor header preparation Venkatraman S
2012-10-22 16:57 ` Venkatraman S [this message]
2012-10-22 16:57 ` [PATCH 4/4] mkswap: Probe and embed useful block device info into swapheader Venkatraman S
2012-10-22 17:04 ` [RFC PATCH 0/4] Adding useful information into swap partition header Venkatraman S
2012-10-23 12:16 ` Karel Zak
2012-10-23 13:37   ` Venkatraman S
2012-11-08  9:44     ` Karel Zak

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1350925048-31084-4-git-send-email-venkat@linaro.org \
    --to=venkat@linaro.org \
    --cc=arnd.bergmann@linaro.org \
    --cc=kzak@redhat.com \
    --cc=util-linux@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.