From: Christoph Hellwig <hch@lst.de>
To: Chris Mason <clm@fb.com>, Josef Bacik <josef@toxicpanda.com>,
David Sterba <dsterba@suse.com>,
"Darrick J. Wong" <djwong@kernel.org>
Cc: linux-btrfs@vger.kernel.org, linux-xfs@vger.kernel.org,
linux-fsdevel@vger.kernel.org
Subject: reduce memory allocation in the btrfs direct I/O path
Date: Wed, 4 May 2022 09:23:37 -0700 [thread overview]
Message-ID: <20220504162342.573651-1-hch@lst.de> (raw)
Hi all,
this series adds two minor improvements to iomap that allow btrfs
to avoid a memory allocation per read/write system call and another
one per submitted bio. I also have at last two other pending uses
for the iomap functionality later on, so they are not really btrfs
specific either.
Diffstat:
fs/btrfs/btrfs_inode.h | 25 --------
fs/btrfs/ctree.h | 6 -
fs/btrfs/file.c | 6 -
fs/btrfs/inode.c | 152 +++++++++++++++++++++++--------------------------
fs/iomap/direct-io.c | 26 +++++++-
include/linux/iomap.h | 4 +
6 files changed, 104 insertions(+), 115 deletions(-)
next reply other threads:[~2022-05-04 16:23 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-04 16:23 Christoph Hellwig [this message]
2022-05-04 16:23 ` [PATCH 1/5] iomap: allow the file system to provide a bio_set for direct I/O Christoph Hellwig
2022-05-05 15:38 ` Darrick J. Wong
2022-05-04 16:23 ` [PATCH 2/5] iomap: add per-iomap_iter private data Christoph Hellwig
2022-05-05 8:06 ` Nikolay Borisov
2022-05-05 15:06 ` Christoph Hellwig
2022-05-05 15:41 ` Darrick J. Wong
2022-05-05 15:45 ` Christoph Hellwig
2022-05-05 16:32 ` Darrick J. Wong
2022-05-05 18:15 ` Christoph Hellwig
2022-05-05 18:18 ` Darrick J. Wong
2022-05-04 16:23 ` [PATCH 3/5] btrfs: add a btrfs_dio_rw wrapper Christoph Hellwig
2022-05-04 16:23 ` [PATCH 4/5] btrfs: allocate dio_data on stack Christoph Hellwig
2022-05-04 16:23 ` [PATCH 5/5] btrfs: allocate the btrfs_dio_private as part of the iomap dio bio Christoph Hellwig
2022-05-05 8:12 ` Nikolay Borisov
2022-05-05 15:07 ` Christoph Hellwig
2022-05-05 15:20 ` David Sterba
2022-05-05 15:52 ` David Sterba
2022-05-05 8:33 ` reduce memory allocation in the btrfs direct I/O path Nikolay Borisov
2022-05-05 15:55 ` David Sterba
2022-05-06 17:18 ` Darrick J. Wong
2022-05-07 5:26 ` Christoph Hellwig
2022-05-09 18:46 ` David Sterba
2022-05-10 3:33 ` Darrick J. Wong
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