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Re: [PATCH] JBD slab cleanups

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From: Dave Kleikamp <shaggy@...>
To: <cmm@...>
Cc: Andrew Morton <akpm@...>, Christoph Hellwig <hch@...>, Badari Pulavarty <pbadari@...>, Christoph Lameter <clameter@...>, linux-fsdevel <linux-fsdevel@...>, ext4 development <linux-ext4@...>, lkml <linux-kernel@...>
Subject: Re: [PATCH] JBD slab cleanups
Date: Wednesday, September 19, 2007 - 3:26 pm

On Wed, 2007-09-19 at 12:15 -0700, Mingming Cao wrote:


No.  GFP_NOFS avoids deadlock.  It prevents the allocation from making
recursive calls back into the file system that could end up blocking on
jbd code.

Shaggy
-- 
David Kleikamp
IBM Linux Technology Center

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[31/36] Large Blocksize: Core piece, , (Tue Aug 28, 3:06 pm)
Re: [31/36] Large Blocksize: Core piece, Mingming Cao, (Wed Aug 29, 8:11 pm)
Re: [31/36] Large Blocksize: Core piece, Christoph Lameter, (Wed Aug 29, 8:12 pm)
[RFC 4/4]ext4: fix rec_len overflow with 64KB block size, Mingming Cao, (Wed Aug 29, 8:48 pm)
[RFC 3/4] ext3: fix rec_len overflow with 64KB block size, Mingming Cao, (Wed Aug 29, 8:48 pm)
[RFC 2/4]ext2: fix rec_len overflow with 64KB block size, Mingming Cao, (Wed Aug 29, 8:47 pm)
[RFC 1/4] Large Blocksize support for Ext2/3/4, Mingming Cao, (Wed Aug 29, 8:47 pm)
[PATCH 2/2] ext3: Avoid rec_len overflow with 64KB block size, Mingming Cao, (Mon Oct 1, 8:36 pm)
[PATCH 1/2] ext3: Support large blocksize up to PAGESIZE, Mingming Cao, (Mon Oct 1, 8:36 pm)
[PATCH 2/2] ext2: Avoid rec_len overflow with 64KB block size, Mingming Cao, (Mon Oct 1, 8:35 pm)
Re: [PATCH 2/2] ext2: Avoid rec_len overflow with 64KB block..., Andrew Morton, (Thu Oct 4, 4:12 pm)
Re: [PATCH 2/2] ext2: Avoid rec_len overflow with 64KB block..., Jan Kara, (Thu Oct 11, 7:18 am)
Re: [PATCH 2/2] ext2: Avoid rec_len overflow with 64KB block..., Andrew Morton, (Thu Oct 18, 12:09 am)
Re: [PATCH 2/2] ext2: Avoid rec_len overflow with 64KB block..., Mingming Cao, (Thu Oct 18, 10:05 pm)
Re: [PATCH 2/2] ext2: Avoid rec_len overflow with 64KB block..., Christoph Lameter, (Thu Oct 18, 5:03 am)
Re: [PATCH 2/2] ext2: Avoid rec_len overflow with 64KB block..., Andrew Morton, (Thu Oct 18, 5:11 am)
Re: [PATCH 2/2] ext2: Avoid rec_len overflow with 64KB block..., Andrew Morton, (Thu Oct 18, 12:07 am)
Re: [PATCH 2/2] ext2: Avoid rec_len overflow with 64KB block..., Jan Kara, (Mon Oct 8, 9:02 am)
Re: [PATCH 2/2] ext2: Avoid rec_len overflow with 64KB block..., Andreas Dilger, (Thu Oct 4, 6:40 pm)
Re: [PATCH 2/2] ext2: Avoid rec_len overflow with 64KB block..., Andrew Morton, (Thu Oct 4, 7:11 pm)
Re: [PATCH 2/2] ext2: Avoid rec_len overflow with 64KB block..., Jan Kara, (Thu Oct 11, 6:30 am)
Re: [PATCH 2/2] ext2: Avoid rec_len overflow with 64KB block..., Andrew Morton, (Thu Oct 11, 6:14 am)
[PATCH 1/2] ext2: Support large blocksize up to PAGESIZE, Mingming Cao, (Mon Oct 1, 8:35 pm)
[PATCH 2/2] ext4: Avoid rec_len overflow with 64KB block size, Mingming Cao, (Mon Oct 1, 8:35 pm)
[PATCH 1/2] ext4: Support large blocksize up to PAGESIZE, Mingming Cao, (Mon Oct 1, 8:34 pm)
Re: [RFC 1/4] Large Blocksize support for Ext2/3/4, Christoph Lameter, (Wed Aug 29, 8:59 pm)
[RFC 2/2] JBD: blocks reservation fix for large block support, Mingming Cao, (Fri Aug 31, 8:12 pm)
[RFC 1/2] JBD: slab management support for large block(&gt;8k), Mingming Cao, (Fri Aug 31, 8:12 pm)
Re: [RFC 1/2] JBD: slab management support for large block(&..., Christoph Hellwig, (Sat Sep 1, 2:39 pm)
Re: [RFC 1/2] JBD: slab management support for large block(&..., Christoph Lameter, (Sun Sep 2, 7:40 am)
Re: [RFC 1/2] JBD: slab management support for large block(&..., Christoph Hellwig, (Sun Sep 2, 11:28 am)
Re: [RFC 1/2] JBD: slab management support for large block(&..., Christoph Lameter, (Mon Sep 3, 3:55 am)
Re: [RFC 1/2] JBD: slab management support for large block(&..., Christoph Hellwig, (Mon Sep 3, 9:40 am)
Re: [RFC 1/2] JBD: slab management support for large block(&..., Christoph Lameter, (Mon Sep 3, 3:31 pm)
Re: [RFC 1/2] JBD: slab management support for large block(&..., Christoph Hellwig, (Mon Sep 3, 3:33 pm)
[PATCH] JBD slab cleanups, Mingming Cao, (Fri Sep 14, 2:53 pm)
Re: [PATCH] JBD slab cleanups, Mingming Cao, (Mon Sep 17, 3:29 pm)
Re: [PATCH] JBD slab cleanups, Badari Pulavarty, (Mon Sep 17, 6:01 pm)
Re: [PATCH] JBD slab cleanups, Mingming Cao, (Mon Sep 17, 6:57 pm)
Re: [PATCH] JBD slab cleanups, Christoph Hellwig, (Tue Sep 18, 5:04 am)
Re: [PATCH] JBD slab cleanups, Mingming Cao, (Tue Sep 18, 12:35 pm)
Re: [PATCH] JBD slab cleanups, Dave Kleikamp, (Tue Sep 18, 2:04 pm)
Re: [PATCH] JBD slab cleanups, Mingming Cao, (Tue Sep 18, 9:00 pm)
Re: [PATCH] JBD slab cleanups, Andrew Morton, (Tue Sep 18, 10:19 pm)
Re: [PATCH] JBD slab cleanups, Mingming Cao, (Wed Sep 19, 3:15 pm)
Re: [PATCH] JBD slab cleanups, Andreas Dilger, (Wed Sep 19, 3:48 pm)
Re: [PATCH] JBD slab cleanups, Mingming Cao, (Wed Sep 19, 6:03 pm)
[PATCH] JBD/ext34 cleanups: convert to kzalloc, Mingming Cao, (Fri Sep 21, 7:13 pm)
Re: [PATCH] JBD/ext34 cleanups: convert to kzalloc, Andrew Morton, (Wed Sep 26, 3:54 pm)
Re: [PATCH] JBD/ext34 cleanups: convert to kzalloc, Mingming Cao, (Wed Sep 26, 5:05 pm)
[PATCH] JBD2/ext4 naming cleanup, Mingming Cao, (Fri Sep 21, 7:32 pm)
Re: [PATCH] JBD slab cleanups, Dave Kleikamp, (Wed Sep 19, 3:26 pm)
Re: [PATCH] JBD slab cleanups, Dave Kleikamp, (Wed Sep 19, 3:28 pm)
Re: [PATCH] JBD slab cleanups, Mingming Cao, (Wed Sep 19, 4:47 pm)
[PATCH] JBD: use GFP_NOFS in kmalloc, Mingming Cao, (Wed Sep 19, 3:22 pm)
Re: [PATCH] JBD: use GFP_NOFS in kmalloc, Andreas Dilger, (Thu Sep 20, 12:25 am)
Re: [PATCH] JBD: use GFP_NOFS in kmalloc, Andrew Morton, (Wed Sep 19, 5:34 pm)
Re: [PATCH] JBD: use GFP_NOFS in kmalloc, Mingming Cao, (Wed Sep 19, 5:55 pm)
Re: [PATCH] JBD slab cleanups, Christoph Hellwig, (Mon Sep 17, 3:34 pm)
Re: [PATCH] JBD slab cleanups, Christoph Lameter, (Fri Sep 14, 2:58 pm)
Re: [RFC 1/4] Large Blocksize support for Ext2/3/4, Mingming Cao, (Fri Aug 31, 8:01 pm)