linux-ext4 - [PATCH 0/3 ver. 7] Ext3/Ext4 Batched discard support

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Date:	Tue, 10 Aug 2010 16:19:34 +0200
From:	Lukas Czerner <lczerner@...hat.com>
To:	linux-ext4@...r.kernel.org
Cc:	dmonakhov@...nvz.org, jmoyer@...hat.com, rwheeler@...hat.com,
	eshishki@...hat.com, sandeen@...hat.com, jack@...e.cz,
	tytso@....edu, lczerner@...hat.com
Subject: [PATCH 0/3 ver. 7] Ext3/Ext4 Batched discard support

Hi all,

this is "hopefully" the final version of the patch set, since it looks like
everyone agree with this. Since the last version some simple fixes was done.

- As Jan noticed it should subtract the s_first_data_block before modulo when
computing the group starting block.
- As Dimitry proposed cond_reshed() is really useless in the ext4_trim_extent
and rescheduling should be done in the ext4_trim_all_free.

Also from previous version it supports "partial" fs discard see [PATCH 1/3].

The patch set consist of these three patches. Second and third patch are
independent on each other and dependent on the first patch.

[PATCH 1/3] Add ioctl FITRIM.
[PATCH 2/3] Add batched discard support for ext3
[PATCH 3/3] Add batched discard support for ext4

Regards
-Lukas

---
 fs/ext3/balloc.c        |  250 +++++++++++++++++++++++++++++++++++++++++++++++
 fs/ext3/super.c         |    1 +
 fs/ext4/ext4.h          |    2 +
 fs/ext4/mballoc.c       |  200 +++++++++++++++++++++++++++++++++++++
 fs/ext4/super.c         |    1 +
 fs/ioctl.c              |   34 +++++++
 include/linux/ext3_fs.h |    1 +
 include/linux/fs.h      |    2 +
 8 files changed, 491 insertions(+), 0 deletions(-)
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