linux-yocto/fs/qnx4/Kconfig
Christoph Hellwig 925c86a19b 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>
2023-08-02 09:13:09 -06:00

578 B

SPDX-License-Identifier: GPL-2.0-only

config QNX4FS_FS tristate "QNX4 file system support (read only)" depends on BLOCK select BUFFER_HEAD help This is the file system used by the real-time operating systems QNX 4 and QNX 6 (the latter is also called QNX RTP). Further information is available at http://www.qnx.com/. Say Y if you intend to mount QNX hard disks or floppies.

  To compile this file system support as a module, choose M here: the
  module will be called qnx4.

  If you don't know whether you need it, then you don't need it:
  answer N.