fs: build the legacy direct I/O code conditionally

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>
This commit is contained in:
Christoph Hellwig
2023-01-25 07:58:39 +01:00
committed by Jens Axboe
parent 439bc39b3c
commit 9636e650e1
14 changed files with 18 additions and 1 deletions
+1
View File
@@ -4,6 +4,7 @@ config HFSPLUS_FS
depends on BLOCK
select NLS
select NLS_UTF8
select LEGACY_DIRECT_IO
help
If you say Y here, you will be able to mount extended format
Macintosh-formatted hard drive partitions with full read-write access.