From: Boris Burkov <boris@bur.io>
To: linux-btrfs@vger.kernel.org, kernel-team@fb.com,
'Filipe Manana ' <fdmanana@kernel.org>
Subject: [PATCH v2 0/2] btrfs: minor reclaim tuning
Date: Thu, 13 Oct 2022 15:52:08 -0700 [thread overview]
Message-ID: <cover.1665701210.git.boris@bur.io> (raw)
Two minor reclaim fixes that reduce relocations when they aren't quite
necessary. These are a basic first step in a broader effort to reduce
the alarmingly high rate of relocation we have observed in production
at Meta.
The first patch skips empty relocation.
The second patch skips relocation that no longer passes the reclaim
threshold check at reclaim time.
Changes in v2:
- added the re-check patch
- improved commit message and comment in the skip-empty patch.
Boris Burkov (2):
btrfs: skip reclaim if block_group is empty
btrfs: re-check reclaim condition in reclaim worker
fs/btrfs/block-group.c | 83 +++++++++++++++++++++++++++++-------------
1 file changed, 58 insertions(+), 25 deletions(-)
--
2.38.0
next reply other threads:[~2022-10-13 22:52 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-13 22:52 Boris Burkov [this message]
2022-10-13 22:52 ` [PATCH v2 1/2] btrfs: skip reclaim if block_group is empty Boris Burkov
2022-10-13 22:52 ` [PATCH v2 2/2] btrfs: re-check reclaim condition in reclaim worker Boris Burkov
2022-10-14 8:43 ` David Sterba
2022-10-14 10:24 ` [PATCH v2 0/2] btrfs: minor reclaim tuning Filipe Manana
2022-10-14 14:09 ` David Sterba
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