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exfat: fs: build the legacy direct I/O code conditionally

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Add a new LEGACY_DIRECT_IO config symbol that is only selected by the
file systems that still use the legacy blockdev_direct_IO code, so that
kernels without support for those file systems don't need to build the
code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20230125065839.191256-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
This commit is contained in:
Christoph Hellwig 2023-07-11 22:35:23 +09:00 committed by Namjae Jeon
parent d8b0edab69
commit 796bbd0726
1 changed files with 1 additions and 0 deletions
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Kconfig
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@ -3,6 +3,7 @@
config EXFAT_FS config EXFAT_FS
tristate "exFAT filesystem support" tristate "exFAT filesystem support"
select NLS select NLS
select LEGACY_DIRECT_IO
help help
This allows you to mount devices formatted with the exFAT file system. This allows you to mount devices formatted with the exFAT file system.
exFAT is typically used on SD-Cards or USB sticks. exFAT is typically used on SD-Cards or USB sticks.