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> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
35 lines
590 B
Plaintext
35 lines
590 B
Plaintext
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# For a description of the syntax of this configuration file,
|
|
# see Documentation/kbuild/kconfig-language.txt.
|
|
#
|
|
mainmenu "Linux/$(ARCH) $(KERNELVERSION) Kernel Configuration"
|
|
|
|
comment "Compiler: $(CC_VERSION_TEXT)"
|
|
|
|
source "scripts/Kconfig.include"
|
|
|
|
source "init/Kconfig"
|
|
|
|
source "kernel/Kconfig.freezer"
|
|
|
|
source "fs/Kconfig.binfmt"
|
|
|
|
source "mm/Kconfig"
|
|
|
|
source "net/Kconfig"
|
|
|
|
source "drivers/Kconfig"
|
|
|
|
source "fs/Kconfig"
|
|
|
|
source "security/Kconfig"
|
|
|
|
source "crypto/Kconfig"
|
|
|
|
source "lib/Kconfig"
|
|
|
|
source "lib/Kconfig.debug"
|
|
|
|
source "techpack/Kconfig"
|