From: Theodore Ts'o <tytso@mit.edu>
To: Lukas Czerner <lczerner@redhat.com>
Cc: linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org,
hughd@google.com, linux-mmc@vger.kernel.org
Subject: Re: Add invalidatepage_range address space operation
Date: Sat, 18 Aug 2012 20:57:27 -0400 [thread overview]
Message-ID: <20120819005727.GA15763@thunk.org> (raw)
In-Reply-To: <1343376074-28034-1-git-send-email-lczerner@redhat.com>
On Fri, Jul 27, 2012 at 10:00:59AM +0200, Lukas Czerner wrote:
> This set of patches are aimed to allow truncate_inode_pages_range() handle
> ranges which are not aligned at the end of the page. Currently it will
> hit BUG_ON() when the end of the range is not aligned. Punch hole feature
> however can benefit from this ability saving file systems some work not
> forcing them to implement their own invalidate code to handle unaligned
> ranges.
>
> In order for this to work we need however new address space operation
> invalidatepage_range which should be able to handle page invalidation with
> offset and length specified.
>
> patch 01: Implements the new invalidatepage_range address space
> operation in the mm layer
> patch 02 - 05: Wire the new invalidatepage_range aop to the ext4, xfs and
> ocfs2 file system (which are currently the only file
> systems supporting punch hole) and implement this
> functionality for jbd2 as well.
> patch 06: Change truncate_inode_pages_range() to handle unaligned
> ranges.
> patch 07 - 15: Ext4 specific changes which take benefit from the
> previous truncate_inode_pages_range() change. Not all
> are realated specifically to this change, but all are
> related to the punch hole feature.
What's the current status of this patch series?
I haven't seen much if any comment from the mm folks and the xfs/ocfs2
folks. I've incorporated the patches into the unstable portion of the
ext4 tree so I can do some testing (some minor changes to the ext4
patches were needed to rebase the patch series to the 3.6-rc1-based
ext4 dev tree, but nothing major). However, I don't want to include
this into the ext4 tree for merging into linux-next unless we get
general agreement from the maintainers of the other trees that are
affected by this patch series.
Thansk,
- Ted
next prev parent reply other threads:[~2012-08-19 0:57 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-27 8:00 Add invalidatepage_range address space operation Lukas Czerner
2012-07-27 8:01 ` [PATCH 01/15] mm: add " Lukas Czerner
2012-08-20 5:24 ` Hugh Dickins
[not found] ` <5033a999.0f403a0a.19c3.ffff95deSMTPIN_ADDED@mx.google.com>
2012-08-21 18:59 ` Hugh Dickins
2012-07-27 8:01 ` [PATCH 02/15] jbd2: implement jbd2_journal_invalidatepage_range Lukas Czerner
2012-07-27 8:01 ` [PATCH 03/15] ext4: implement invalidatepage_range aop Lukas Czerner
2012-07-27 8:01 ` [PATCH 04/15] xfs: " Lukas Czerner
2012-07-27 8:01 ` Lukas Czerner
2012-07-27 8:01 ` [PATCH 05/15] ocfs2: " Lukas Czerner
2012-07-27 8:01 ` [Ocfs2-devel] " Lukas Czerner
2012-07-27 8:01 ` [PATCH 06/15] mm: teach truncate_inode_pages_range() to handle non page aligned ranges Lukas Czerner
2012-08-20 4:52 ` Hugh Dickins
2012-08-20 10:26 ` Lukáš Czerner
2012-08-20 15:47 ` Hugh Dickins
[not found] ` <50339e0d.69b2340a.50ba.ffff92bcSMTPIN_ADDED@mx.google.com>
2012-08-21 18:44 ` Hugh Dickins
2012-08-20 15:53 ` Hugh Dickins
2012-07-27 8:01 ` [PATCH 07/15] ext4: Take i_mutex before punching hole Lukas Czerner
2012-07-27 9:04 ` Lukáš Czerner
2012-07-27 12:08 ` Zheng Liu
2012-08-20 5:45 ` Hugh Dickins
2012-07-27 8:01 ` [PATCH 08/15] Revert "ext4: remove no longer used functions in inode.c" Lukas Czerner
2012-07-27 8:01 ` [PATCH 09/15] Revert "ext4: fix fsx truncate failure" Lukas Czerner
2012-07-27 8:01 ` [PATCH 10/15] ext4: use ext4_zero_partial_blocks in punch_hole Lukas Czerner
2012-07-27 8:01 ` [PATCH 11/15] ext4: remove unused discard_partial_page_buffers Lukas Czerner
2012-07-27 8:01 ` [PATCH 12/15] ext4: remove unused code from ext4_remove_blocks() Lukas Czerner
2012-07-27 8:01 ` [PATCH 13/15] ext4: update ext4_ext_remove_space trace point Lukas Czerner
2012-07-27 8:01 ` [PATCH 14/15] ext4: make punch hole code path work with bigalloc Lukas Czerner
2012-07-27 8:01 ` [PATCH 15/15] ext4: Allow punch hole with bigalloc enabled Lukas Czerner
2012-08-19 0:57 ` Theodore Ts'o [this message]
2012-08-20 4:43 ` Add invalidatepage_range address space operation Hugh Dickins
2012-08-20 13:23 ` Theodore Ts'o
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