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Christoph Hellwig
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 <[email protected]> Reviewed-by: Luis Chamberlain <[email protected]> Reviewed-by: Johannes Thumshirn <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Jens Axboe <[email protected]>
16 lines
600 B
Plaintext
16 lines
600 B
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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config OMFS_FS
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tristate "SonicBlue Optimized MPEG File System support"
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depends on BLOCK
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select BUFFER_HEAD
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select CRC_ITU_T
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help
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This is the proprietary file system used by the Rio Karma music
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player and ReplayTV DVR. Despite the name, this filesystem is not
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more efficient than a standard FS for MPEG files, in fact likely
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the opposite is true. Say Y if you have either of these devices
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and wish to mount its disk.
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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 omfs. If unsure, say N.
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