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925c86a19b
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>
30 lines
1.1 KiB
Plaintext
30 lines
1.1 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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config ADFS_FS
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tristate "ADFS file system support"
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depends on BLOCK
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select BUFFER_HEAD
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help
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The Acorn Disc Filing System is the standard file system of the
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RiscOS operating system which runs on Acorn's ARM-based Risc PC
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systems and the Acorn Archimedes range of machines. If you say Y
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here, Linux will be able to read from ADFS partitions on hard drives
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and from ADFS-formatted floppy discs. If you also want to be able to
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write to those devices, say Y to "ADFS write support" below.
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The ADFS partition should be the first partition (i.e.,
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/dev/[hs]d?1) on each of your drives. Please read the file
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<file:Documentation/filesystems/adfs.rst> for further details.
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To compile this code as a module, choose M here: the module will be
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called adfs.
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If unsure, say N.
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config ADFS_FS_RW
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bool "ADFS write support (DANGEROUS)"
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depends on ADFS_FS
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help
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If you say Y here, you will be able to write to ADFS partitions on
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hard drives and ADFS-formatted floppy disks. This is experimental
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codes, so if you're unsure, say N.
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