From: amir73il@users.sourceforge.net
To: tytso@mit.edu
Cc: linux-ext4@vger.kernel.org
Subject: [PATCHSET v2] ext4: removal of alloc_sem locks from block allocation paths
Date: Thu, 24 Mar 2011 18:58:08 +0200 [thread overview]
Message-ID: <1300985893-4371-1-git-send-email-amir73il@users.sourceforge.net> (raw)
The purpose of this patch set is the removal of grp->alloc_sem locks
from block allocation paths.
The resulting code is cleaner and should perform better in concurrent
allocating tasks workloads.
I ran several xfstests runs with these patches (4K and 1K block size).
I tried several online resizes and verifyed that both in-core and on-disk
group counters are correct.
v2->v1:
- fix silly bug in patch 4/5 that triggers BUG_ON(incore == NULL)
- replace get_undo_access() with get_write_access()
- ran xfstests with block size 1K (where 2 groups share a buddy page)
[PATCH v2 1/5] ext4: move ext4_add_groupblocks() to mballoc.c
[PATCH v2 2/5] ext4: implement ext4_add_groupblocks() by freeing blocks
[PATCH v2 3/5] ext4: synchronize ext4_mb_init_group() with buddy page lock
[PATCH v2 4/5] ext4: teach ext4_mb_init_cache() to skip uptodate buddy caches
[PATCH v2 5/5] ext4: remove alloc_semp
next reply other threads:[~2011-03-24 16:58 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-24 16:58 amir73il [this message]
2011-03-24 16:58 ` [PATCH v2 1/5] ext4: move ext4_add_groupblocks() to mballoc.c amir73il
2011-05-09 14:54 ` Ted Ts'o
2011-05-09 14:59 ` [PATCH 1/2] " Theodore Ts'o
2011-05-09 14:59 ` [PATCH 2/2] ext4: remove unneeded ext4_journal_get_undo_access Theodore Ts'o
2011-05-09 16:01 ` [PATCH v2 1/5] ext4: move ext4_add_groupblocks() to mballoc.c Amir G.
2011-05-09 16:28 ` Yongqiang Yang
2011-03-24 16:58 ` [PATCH v2 2/5] ext4: implement ext4_add_groupblocks() by freeing blocks amir73il
2011-03-24 16:58 ` [PATCH v2 3/5] ext4: synchronize ext4_mb_init_group() with buddy page lock amir73il
2011-03-24 16:58 ` [PATCH v2 4/5] ext4: teach ext4_mb_init_cache() to skip uptodate buddy caches amir73il
2011-03-24 16:58 ` [PATCH v2 5/5] ext4: remove alloc_semp amir73il
2011-05-10 13:29 ` Ted Ts'o
2011-05-10 18:20 ` Amir G.
2011-05-03 15:47 ` [PATCHSET v2] ext4: removal of alloc_sem locks from block allocation paths Amir G.
2011-05-10 13:48 ` Lukas Czerner
2011-05-10 18:30 ` Amir G.
2011-05-10 18:43 ` Lukas Czerner
2011-05-10 18:58 ` Amir G.
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