summaryrefslogtreecommitdiffstats
path: root/fs/Makefile
diff options
context:
space:
mode:
authorChristoph Hellwig <hch@lst.de>2023-08-01 19:22:01 +0200
committerJens Axboe <axboe@kernel.dk>2023-08-02 09:13:09 -0600
commit925c86a19bacf8ce10eb666328fb3fa5aff7b951 (patch)
treee5724b45449d43a6a695ff2ff0a1276e70a7ccf7 /fs/Makefile
parent487c607df790d366e67a7d6a30adf785cdd98e55 (diff)
downloadlinux-925c86a19bacf8ce10eb666328fb3fa5aff7b951.tar.gz
linux-925c86a19bacf8ce10eb666328fb3fa5aff7b951.tar.bz2
linux-925c86a19bacf8ce10eb666328fb3fa5aff7b951.zip
fs: add CONFIG_BUFFER_HEAD
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>
Diffstat (limited to 'fs/Makefile')
-rw-r--r--fs/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/Makefile b/fs/Makefile
index e513aaee0603..f9541f40be4e 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -17,7 +17,7 @@ obj-y := open.o read_write.o file_table.o super.o \
fs_types.o fs_context.o fs_parser.o fsopen.o init.o \
kernel_read_file.o mnt_idmapping.o remap_range.o
-obj-$(CONFIG_BLOCK) += buffer.o mpage.o
+obj-$(CONFIG_BUFFER_HEAD) += buffer.o mpage.o
obj-$(CONFIG_PROC_FS) += proc_namespace.o
obj-$(CONFIG_LEGACY_DIRECT_IO) += direct-io.o
obj-y += notify/