From: Nigel Cunningham <nigel@suspend2.net>
To: linux-kernel@vger.kernel.org
Subject: [Suspend2][ 11/28] [Suspend2] Get block chains for swapwriter.
Date: Tue, 27 Jun 2006 08:41:42 +1000 [thread overview]
Message-ID: <20060626224141.4975.36440.stgit@nigel.suspend2.net> (raw)
In-Reply-To: <20060626224105.4975.90758.stgit@nigel.suspend2.net>
Given the (previously allocated) swap entries, get the sectors for each
device to which we'll be writing the image.
Signed-off-by: Nigel Cunningham <nigel@suspend2.net>
kernel/power/suspend_swap.c | 58 +++++++++++++++++++++++++++++++++++++++++++
1 files changed, 58 insertions(+), 0 deletions(-)
diff --git a/kernel/power/suspend_swap.c b/kernel/power/suspend_swap.c
index 8e4221d..af6640f 100644
--- a/kernel/power/suspend_swap.c
+++ b/kernel/power/suspend_swap.c
@@ -360,3 +360,61 @@ static int swapwriter_allocate_header_sp
return 0;
}
+static void get_main_pool_phys_params(void)
+{
+ struct extent *extentpointer = NULL;
+ unsigned long address;
+ int i, extent_min = -1, extent_max = -1, last_chain = -1;
+ int prev_header_pages_allocated;
+
+ for (i = 0; i < MAX_SWAPFILES; i++)
+ if (block_chain[i].first)
+ suspend_put_extent_chain(&block_chain[i]);
+
+ suspend_extent_for_each(&swapextents, extentpointer, address) {
+ swp_entry_t swap_address = extent_val_to_swap_entry(address);
+ pgoff_t offset = swp_offset(swap_address);
+ unsigned swapfilenum = swp_type(swap_address);
+ struct swap_info_struct *sis = get_swap_info_struct(swapfilenum);
+ sector_t new_sector = map_swap_page(sis, offset);
+
+ if ((new_sector == extent_max + 1) &&
+ (last_chain == swapfilenum))
+ extent_max++;
+ else {
+ if (extent_min > -1) {
+ if (test_action_state(SUSPEND_TEST_BIO))
+ printk("Adding extent chain %d %d-%d.\n",
+ swapfilenum,
+ extent_min <<
+ devinfo[last_chain].bmap_shift,
+ extent_max <<
+ devinfo[last_chain].bmap_shift);
+
+ suspend_add_to_extent_chain(
+ &block_chain[last_chain],
+ extent_min, extent_max);
+ }
+ extent_min = extent_max = new_sector;
+ last_chain = swapfilenum;
+ }
+ }
+
+ if (extent_min > -1) {
+ if (test_action_state(SUSPEND_TEST_BIO))
+ printk("Adding extent chain %d %d-%d.\n",
+ last_chain,
+ extent_min <<
+ devinfo[last_chain].bmap_shift,
+ extent_max <<
+ devinfo[last_chain].bmap_shift);
+ suspend_add_to_extent_chain(
+ &block_chain[last_chain],
+ extent_min, extent_max);
+ }
+
+ prev_header_pages_allocated = header_pages_allocated;
+ header_pages_allocated = 0;
+ swapwriter_allocate_header_space(prev_header_pages_allocated);
+}
+
--
Nigel Cunningham nigel at suspend2 dot net
next prev parent reply other threads:[~2006-06-26 22:49 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-26 22:41 [Suspend2][ 00/28] Swapwriter Nigel Cunningham
2006-06-26 22:41 ` [Suspend2][ 01/28] [Suspend2] Swapwriter.c header Nigel Cunningham
2006-06-26 22:41 ` [Suspend2][ 02/28] [Suspend2] Close a bdev used by the swapwriter Nigel Cunningham
2006-06-26 22:41 ` [Suspend2][ 03/28] [Suspend2] Close bdevs opened " Nigel Cunningham
2006-06-26 22:41 ` [Suspend2][ 04/28] [Suspend2] Open bdev for swapwriter use Nigel Cunningham
2006-06-26 22:41 ` [Suspend2][ 05/28] [Suspend2] Enable/disable swapfile Nigel Cunningham
2006-06-26 22:41 ` [Suspend2][ 06/28] [Suspend2] Try to parse resume2= for swapwriter Nigel Cunningham
2006-06-26 22:41 ` [Suspend2][ 07/28] [Suspend2] Reset swapwriter when not resuming Nigel Cunningham
2006-06-26 22:41 ` [Suspend2][ 08/28] [Suspend2] Parse swapwriter signature Nigel Cunningham
2006-06-26 22:41 ` [Suspend2][ 09/28] [Suspend2] Prepare " Nigel Cunningham
2006-06-26 22:41 ` [Suspend2][ 10/28] [Suspend2] Allocate swapwriter header space Nigel Cunningham
2006-06-26 22:41 ` Nigel Cunningham [this message]
2006-06-26 22:41 ` [Suspend2][ 12/28] [Suspend2] Swapwriter storage allocated and available Nigel Cunningham
2006-06-26 22:41 ` [Suspend2][ 13/28] [Suspend2] Initialise/cleanup swapwriter Nigel Cunningham
2006-06-26 22:41 ` [Suspend2][ 14/28] [Suspend2] Release swapwriter storage Nigel Cunningham
2006-06-26 22:41 ` [Suspend2][ 15/28] [Suspend2] Allocate " Nigel Cunningham
2006-06-26 22:42 ` [Suspend2][ 16/28] [Suspend2] Initialise/cleanup writing the header Nigel Cunningham
2006-06-26 22:42 ` [Suspend2][ 17/28] [Suspend2] Swapwriter read image header init/cleanup Nigel Cunningham
2006-06-26 22:42 ` [Suspend2][ 18/28] [Suspend2] Invalidate swapwriter image Nigel Cunningham
2006-06-26 22:42 ` [Suspend2][ 19/28] [Suspend2] Swapwriter memory needed Nigel Cunningham
2006-06-26 22:42 ` [Suspend2][ 20/28] [Suspend2] Get swapwriter debug info Nigel Cunningham
2006-06-26 22:42 ` [Suspend2][ 21/28] [Suspend2] Get swapwriter image storage needed Nigel Cunningham
2006-06-26 22:42 ` [Suspend2][ 22/28] [Suspend2] Does a swapwriter image exist? Nigel Cunningham
2006-06-26 22:42 ` [Suspend2][ 23/28] [Suspend2] Swapwriter mark resume attempted Nigel Cunningham
2006-06-26 22:42 ` [Suspend2][ 24/28] [Suspend2] Swapwriter parse resume2= Nigel Cunningham
2006-06-26 22:42 ` [Suspend2][ 25/28] [Suspend2] Read resume2= values for currently enabled swap Nigel Cunningham
2006-06-26 22:42 ` [Suspend2][ 26/28] [Suspend2] Swapwriter proc entries Nigel Cunningham
2006-06-26 22:42 ` [Suspend2][ 27/28] [Suspend2] Swapwriter ops Nigel Cunningham
2006-06-26 22:42 ` [Suspend2][ 28/28] [Suspend2] Swapwriter load and unload routines Nigel Cunningham
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=20060626224141.4975.36440.stgit@nigel.suspend2.net \
--to=nigel@suspend2.net \
--cc=linux-kernel@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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®