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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>
25 lines
786 B
Plaintext
25 lines
786 B
Plaintext
# SPDX-License-Identifier: GPL-2.0-or-later
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config EXFAT_FS
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tristate "exFAT filesystem support"
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select BUFFER_HEAD
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select NLS
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select LEGACY_DIRECT_IO
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help
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This allows you to mount devices formatted with the exFAT file system.
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exFAT is typically used on SD-Cards or USB sticks.
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To compile this as a module, choose M here: the module will be called
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exfat.
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config EXFAT_DEFAULT_IOCHARSET
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string "Default iocharset for exFAT"
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default "utf8"
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depends on EXFAT_FS
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help
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Set this to the default input/output character set to use for
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converting between the encoding that is used for user visible
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filenames and the UTF-16 character encoding that the exFAT
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filesystem uses. This can be overridden with the "iocharset" mount
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option for the exFAT filesystems.
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