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>
18 lines
717 B
Plaintext
18 lines
717 B
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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config HPFS_FS
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tristate "OS/2 HPFS file system support"
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depends on BLOCK
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select BUFFER_HEAD
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select FS_IOMAP
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help
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OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS
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is the file system used for organizing files on OS/2 hard disk
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partitions. Say Y if you want to be able to read files from and
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write files to an OS/2 HPFS partition on your hard drive. OS/2
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floppies however are in regular MSDOS format, so you don't need this
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option in order to be able to read them. Read
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<file:Documentation/filesystems/hpfs.rst>.
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To compile this file system support as a module, choose M here: the
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module will be called hpfs. If unsure, say N.
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