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authorChristoph Hellwig <hch@lst.de>2023-01-25 07:58:39 +0100
committerJens Axboe <axboe@kernel.dk>2023-01-26 10:30:56 -0700
commit9636e650e16f6b01f0044f7662074958c23e4707 (patch)
treee040da863e3d88a1275dd7ed6c24b1a19eb5fa2a /fs/Makefile
parent439bc39b3cf0014b1b75075812f7ef0f8baa9674 (diff)
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>
Diffstat (limited to 'fs/Makefile')
-rw-r--r--fs/Makefile3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/Makefile b/fs/Makefile
index 4dea17840761..606c029e1c9b 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -19,13 +19,14 @@ obj-y := open.o read_write.o file_table.o super.o \
kernel_read_file.o remap_range.o
ifeq ($(CONFIG_BLOCK),y)
-obj-y += buffer.o direct-io.o mpage.o
+obj-y += buffer.o mpage.o
else
obj-y += no-block.o
endif
obj-$(CONFIG_PROC_FS) += proc_namespace.o
+obj-$(CONFIG_LEGACY_DIRECT_IO) += direct-io.o
obj-y += notify/
obj-$(CONFIG_EPOLL) += eventpoll.o
obj-y += anon_inodes.o