bianbu-repo-mirror/bianbu-linux-6.6-fh
1
0
Fork 0
mirror of https://gitee.com/bianbu-linux/linux-6.6-fh synced 2025-04-24 20:27:07 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

fs: add CONFIG_BUFFER_HEAD

Browse source 
Add a new config option that controls building the buffer_head code, and
select it from all file systems and stacking drivers that need it.

For the block device nodes and alternative iomap based buffered I/O path
is provided when buffer_head support is not enabled, and iomap needs a
a small tweak to define the IOMAP_F_BUFFER_HEAD flag to 0 to not call
into the buffer_head code when it doesn't exist.

Otherwise this is just Kconfig and ifdef changes.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20230801172201.1923299-7-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2023-08-01 19:22:01 +02:00 • committed by Jens Axboe
parent 487c607df7
commit 925c86a19b
37 changed files with 119 additions and 29 deletions
Download patch file Download diff file Expand all files Collapse all files

1
fs/fat/Kconfig
View file

@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
config FAT_FS
tristate
select BUFFER_HEAD
select NLS
select LEGACY_DIRECT_IO
help