From: Dave Hansen <dave.hansen@intel.com>
To: Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
Balbir Singh <bsingharora@gmail.com>
Cc: linux-mm@kvack.org, Mel Gorman <mgorman@techsingularity.net>,
Vlastimil Babka <vbabka@suse.cz>,
Michal Hocko <mhocko@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Michael Ellerman <mpe@ellerman.id.au>,
mahesh@linux.vnet.ibm.com
Subject: Re: [PATCH 2/2] fadump: Disable deferred page struct initialisation
Date: Wed, 3 Aug 2016 12:40:17 -0700 [thread overview]
Message-ID: <57A248A1.40807@intel.com> (raw)
In-Reply-To: <20160803063538.GH6310@linux.vnet.ibm.com>
On 08/02/2016 11:35 PM, Srikar Dronamraju wrote:
> On a regular kernel with CONFIG_FADUMP and fadump configured, 5% of the
> total memory is reserved for booting the kernel on crash. On crash,
> fadump kernel reserves the 95% memory and boots into the 5% memory that
> was reserved for it. It then parses the reserved 95% memory to collect
> the dump.
>
> The problem is not about the amount of memory thats reserved for fadump
> kernel. Even if we increase/decrease, we will still end up with the same
> issue.
Oh, and the dentry/inode caches are sized based on 100% of memory, not
the 5% that's left after the fadump reservation?
Is the deferred initialization kicked in progress at the time we do the
dentry/inode allocations? Can waiting a bit let the allocation succeed?
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2016-08-03 19:40 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-02 13:19 [PATCH 0/0] Disable deferred struct page initialisation on Fadump Srikar Dronamraju
2016-08-02 13:19 ` Srikar Dronamraju
2016-08-02 13:19 ` [PATCH 1/2] mm: Allow disabling deferred struct page initialisation Srikar Dronamraju
2016-08-02 13:19 ` Srikar Dronamraju
2016-08-02 18:09 ` Dave Hansen
2016-08-02 18:09 ` Dave Hansen
2016-08-03 6:38 ` Srikar Dronamraju
2016-08-03 6:38 ` Srikar Dronamraju
2016-08-03 18:17 ` Dave Hansen
2016-08-03 18:17 ` Dave Hansen
2016-08-04 5:25 ` Srikar Dronamraju
2016-08-04 5:25 ` Srikar Dronamraju
2016-08-02 13:19 ` [PATCH 2/2] fadump: Disable deferred page struct initialisation Srikar Dronamraju
2016-08-02 13:19 ` Srikar Dronamraju
2016-08-03 5:20 ` Balbir Singh
2016-08-03 5:20 ` Balbir Singh
2016-08-03 6:07 ` Vlastimil Babka
2016-08-03 6:07 ` Vlastimil Babka
2016-08-03 11:34 ` Michael Ellerman
2016-08-03 11:34 ` Michael Ellerman
2016-08-03 6:35 ` Srikar Dronamraju
2016-08-03 19:40 ` Dave Hansen [this message]
2016-08-04 5:10 ` Srikar Dronamraju
2016-08-04 10:28 ` Mel Gorman
2016-08-04 13:54 ` Srikar Dronamraju
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=57A248A1.40807@intel.com \
--to=dave.hansen@intel.com \
--cc=akpm@linux-foundation.org \
--cc=bsingharora@gmail.com \
--cc=linux-mm@kvack.org \
--cc=mahesh@linux.vnet.ibm.com \
--cc=mgorman@techsingularity.net \
--cc=mhocko@kernel.org \
--cc=mpe@ellerman.id.au \
--cc=srikar@linux.vnet.ibm.com \
--cc=vbabka@suse.cz \
/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.