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| author | Christoph Hellwig <hch@lst.de> | 2023-08-01 19:22:01 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-08-02 17:13:09 +0200 |
| commit | 925c86a19bacf8ce10eb666328fb3fa5aff7b951 (patch) | |
| tree | e5724b45449d43a6a695ff2ff0a1276e70a7ccf7 /fs/isofs | |
| parent | block: use iomap for writes to block devices (diff) | |
| download | linux-925c86a19bacf8ce10eb666328fb3fa5aff7b951.tar.xz 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/isofs')
| -rw-r--r-- | fs/isofs/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/isofs/Kconfig b/fs/isofs/Kconfig index 08ffd37b9bb8..51434f2a471b 100644 --- a/fs/isofs/Kconfig +++ b/fs/isofs/Kconfig @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only config ISO9660_FS tristate "ISO 9660 CDROM file system support" + select BUFFER_HEAD help This is the standard file system used on CD-ROMs. It was previously known as "High Sierra File System" and is called "hsfs" on other |