From: David Sterba <dsterba@suse.com>
To: linux-btrfs@vger.kernel.org
Cc: David Sterba <dsterba@suse.com>
Subject: [PATCH 00/15] Remove callback indirections in compression code
Date: Mon, 14 Oct 2019 14:22:21 +0200 [thread overview]
Message-ID: <cover.1571054758.git.dsterba@suse.com> (raw)
The series removes all per-compression algorithm callbacks and replaces
them with a switches. Lots of indirections are simplified and while it
looks nice from design POV, we don't need to over-engineer it as we have
only fixed known number of the users and not public API.
The cost of indirect function calls is also higher with enabled
mitigations of the spectre vulnerability, so they've been incrementally
removed from the whole kernel and from btrfs as well.
David Sterba (15):
btrfs: export compression and decompression callbacks
btrfs: switch compression callbacks to direct calls
btrfs: compression: attach workspace manager to the ops
btrfs: compression: let workspace manager init take only the type
btrfs: compression: inline init_workspace_manager
btrfs: compression: let workspace manager cleanup take only the type
btrfs: compression: inline cleanup_workspace_manager
btrfs: compression: export alloc/free/get/put callbacks of all algos
btrfs: compression: inline get_workspace
btrfs: compression: inline put_workspace
btrfs: compression: pass type to btrfs_get_workspace
btrfs: compression: inline alloc_workspace
btrfs: compression: pass type to btrfs_put_workspace
btrfs: compression: inline free_workspace
btrfs: compression: remove ops pointer from workspace_manager
fs/btrfs/compression.c | 241 +++++++++++++++++++++++++++++++----------
fs/btrfs/compression.h | 39 +------
fs/btrfs/lzo.c | 53 ++-------
fs/btrfs/zlib.c | 52 ++-------
fs/btrfs/zstd.c | 47 +++-----
5 files changed, 227 insertions(+), 205 deletions(-)
--
2.23.0
next reply other threads:[~2019-10-14 12:22 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-14 12:22 David Sterba [this message]
2019-10-14 12:22 ` [PATCH 01/15] btrfs: export compression and decompression callbacks David Sterba
2019-10-17 9:39 ` Johannes Thumshirn
2019-10-14 12:22 ` [PATCH 02/15] btrfs: switch compression callbacks to direct calls David Sterba
2019-10-17 9:42 ` Johannes Thumshirn
2019-10-17 11:24 ` David Sterba
2019-10-14 12:22 ` [PATCH 03/15] btrfs: compression: attach workspace manager to the ops David Sterba
2019-10-17 11:08 ` Johannes Thumshirn
2019-10-14 12:22 ` [PATCH 04/15] btrfs: compression: let workspace manager init take only the type David Sterba
2019-10-17 11:03 ` Johannes Thumshirn
2019-10-14 12:22 ` [PATCH 05/15] btrfs: compression: inline init_workspace_manager David Sterba
2019-10-17 11:06 ` Johannes Thumshirn
2019-10-14 12:22 ` [PATCH 06/15] btrfs: compression: let workspace manager cleanup take only the type David Sterba
2019-10-17 11:10 ` Johannes Thumshirn
2019-10-14 12:22 ` [PATCH 07/15] btrfs: compression: inline cleanup_workspace_manager David Sterba
2019-10-17 11:31 ` Johannes Thumshirn
2019-10-14 12:22 ` [PATCH 08/15] btrfs: compression: export alloc/free/get/put callbacks of all algos David Sterba
2019-10-17 11:44 ` Johannes Thumshirn
2019-10-14 12:22 ` [PATCH 09/15] btrfs: compression: inline get_workspace David Sterba
2019-10-17 11:46 ` Johannes Thumshirn
2019-10-14 12:22 ` [PATCH 10/15] btrfs: compression: inline put_workspace David Sterba
2019-10-17 11:49 ` Johannes Thumshirn
2019-10-14 12:22 ` [PATCH 11/15] btrfs: compression: pass type to btrfs_get_workspace David Sterba
2019-10-17 11:53 ` Johannes Thumshirn
2019-10-14 12:22 ` [PATCH 12/15] btrfs: compression: inline alloc_workspace David Sterba
2019-10-17 11:56 ` Johannes Thumshirn
2019-10-14 12:22 ` [PATCH 13/15] btrfs: compression: pass type to btrfs_put_workspace David Sterba
2019-10-17 11:57 ` Johannes Thumshirn
2019-10-14 12:22 ` [PATCH 14/15] btrfs: compression: inline free_workspace David Sterba
2019-10-17 11:58 ` Johannes Thumshirn
2019-10-14 12:22 ` [PATCH 15/15] btrfs: compression: remove ops pointer from workspace_manager David Sterba
2019-10-17 11:59 ` Johannes Thumshirn
2019-10-17 15:02 ` [PATCH 00/15] Remove callback indirections in compression code Nikolay Borisov
2019-10-17 18:19 ` David Sterba
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