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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
tristate "exFAT filesystem support"
select NLS
select LEGACY_DIRECT_IO
help
This allows you to mount devices formatted with the exFAT file system.
exFAT is typically used on SD-Cards or USB sticks.