mirror of
https://github.com/torvalds/linux.git
synced 2024-11-25 05:32:00 +00:00
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>
42 lines
1.8 KiB
Plaintext
42 lines
1.8 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
|
|
config ISO9660_FS
|
|
tristate "ISO 9660 CDROM file system support"
|
|
select BUFFER_HEAD
|
|
help
|
|
This is the standard file system used on CD-ROMs. It was previously
|
|
known as "High Sierra File System" and is called "hsfs" on other
|
|
Unix systems. The so-called Rock-Ridge extensions which allow for
|
|
long Unix filenames and symbolic links are also supported by this
|
|
driver. If you have a CD-ROM drive and want to do more with it than
|
|
just listen to audio CDs and watch its LEDs, say Y (and read
|
|
<file:Documentation/filesystems/isofs.rst> and the CD-ROM-HOWTO,
|
|
available from <http://www.tldp.org/docs.html#howto>), thereby
|
|
enlarging your kernel by about 27 KB; otherwise say N.
|
|
|
|
To compile this file system support as a module, choose M here: the
|
|
module will be called isofs.
|
|
|
|
config JOLIET
|
|
bool "Microsoft Joliet CDROM extensions"
|
|
depends on ISO9660_FS
|
|
select NLS
|
|
help
|
|
Joliet is a Microsoft extension for the ISO 9660 CD-ROM file system
|
|
which allows for long filenames in unicode format (unicode is the
|
|
new 16 bit character code, successor to ASCII, which encodes the
|
|
characters of almost all languages of the world; see
|
|
<http://www.unicode.org/> for more information). Say Y here if you
|
|
want to be able to read Joliet CD-ROMs under Linux.
|
|
|
|
config ZISOFS
|
|
bool "Transparent decompression extension"
|
|
depends on ISO9660_FS
|
|
select ZLIB_INFLATE
|
|
help
|
|
This is a Linux-specific extension to RockRidge which lets you store
|
|
data in compressed form on a CD-ROM and have it transparently
|
|
decompressed when the CD-ROM is accessed. See
|
|
<http://www.kernel.org/pub/linux/utils/fs/zisofs/> for the tools
|
|
necessary to create such a filesystem. Say Y here if you want to be
|
|
able to read such compressed CD-ROMs.
|