From: Theodore Ts'o <tytso@mit.edu>
To: Zheng Liu <gnehzuil.liu@gmail.com>
Cc: linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Lukas Czerner <lczerner@redhat.com>,
Yongqiang Yang <xiaoqiangnk@gmail.com>,
Allison Henderson <achender@linux.vnet.ibm.com>,
Zheng Liu <wenqing.lz@taobao.com>
Subject: Re: [RFC][PATCH 2/8 v2] ext4: add operations on extent status tree
Date: Wed, 19 Sep 2012 14:41:14 -0400 [thread overview]
Message-ID: <20120919184114.GC28470@thunk.org> (raw)
In-Reply-To: <1345615545-26133-3-git-send-email-wenqing.lz@taobao.com>
On Wed, Aug 22, 2012 at 02:05:39PM +0800, Zheng Liu wrote:
> + * Extents status encompass delayed extents and extent locks
I've looked over this patch set, and as near as I can tell, we aren't
(yet) using the extents status structure to do extent-level locking.
I could imagine using that in the future so we aren't using i_data_sem
to lock out the entire tree, so block allocations could happen in
parallel, but that's not here yet.
Is there something I'm missing, or was something else meant by "extent
locks" here?
Thanks,
- Ted
next prev parent reply other threads:[~2012-09-19 18:41 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-22 6:05 [RFC][PATCH 0/8 v2] ext4: extent status tree (step 1) Zheng Liu
2012-08-22 6:05 ` [RFC][PATCH 1/8 v2] ext4: add two structures supporting extent status tree Zheng Liu
2012-08-22 6:05 ` [RFC][PATCH 2/8 v2] ext4: add operations on " Zheng Liu
2012-09-19 18:34 ` Theodore Ts'o
2012-09-24 4:25 ` Zheng Liu
2012-09-19 18:41 ` Theodore Ts'o [this message]
2012-09-24 3:35 ` Zheng Liu
2012-08-22 6:05 ` [RFC][PATCH 3/8 v2] ext4: initialize " Zheng Liu
2012-09-19 18:53 ` Theodore Ts'o
2012-09-19 19:05 ` Theodore Ts'o
2012-09-24 4:45 ` Zheng Liu
2012-09-25 12:42 ` Zheng Liu
2012-09-25 20:59 ` Theodore Ts'o
2012-09-26 2:09 ` Zheng Liu
2012-09-26 2:47 ` Theodore Ts'o
2012-09-26 3:24 ` Zheng Liu
2012-09-26 3:37 ` Theodore Ts'o
2012-09-26 3:54 ` Zheng Liu
2012-09-26 3:46 ` Theodore Ts'o
2012-09-26 3:59 ` Zheng Liu
2012-09-28 7:27 ` Zheng Liu
2012-09-28 17:42 ` Theodore Ts'o
[not found] ` <CANWLp02F=qDXY_KbhAziPkBe8qGKV6oN3XtSdc5bWOkbDG684g@mail.gmail.com>
2012-09-29 3:07 ` Theodore Ts'o
2012-09-29 13:26 ` Zheng Liu
2012-09-30 14:00 ` Dmitry Monakhov
2012-09-29 13:24 ` Fwd: " Zheng Liu
2012-09-26 8:00 ` Zheng Liu
2012-08-22 6:05 ` [RFC][PATCH 4/8 v2] ext4: let ext4 maintain " Zheng Liu
2012-08-22 6:05 ` [RFC][PATCH 5/8 v2] ext4: add some tracepoints in " Zheng Liu
2012-08-22 6:05 ` [RFC][PATCH 6/8 v2] ext4: reimplement fiemap on " Zheng Liu
2012-08-22 6:05 ` [RFC][PATCH 7/8 v2] ext4: reimplement ext4_find_delay_alloc_range " Zheng Liu
2012-08-22 6:05 ` [RFC][PATCH 8/8 v2] ext4: introduce lseek SEEK_DATA/SEEK_HOLE support Zheng Liu
2012-09-20 14:41 ` [RFC][PATCH 0/8 v2] ext4: extent status tree (step 1) Theodore Ts'o
2012-09-21 1:51 ` Zheng Liu
2012-09-21 3:19 ` Yongqiang Yang
2012-09-22 0:02 ` Theodore Ts'o
2012-09-24 3:16 ` Zheng Liu
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