925c86a19b
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>
28 lines
1.3 KiB
Plaintext
28 lines
1.3 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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config VXFS_FS
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tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
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depends on BLOCK
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select BUFFER_HEAD
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help
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FreeVxFS is a file system driver that support the VERITAS VxFS(TM)
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file system format. VERITAS VxFS(TM) is the standard file system
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of SCO UnixWare (and possibly others) and optionally available
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for Sunsoft Solaris, HP-UX and many other operating systems. However
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these particular OS implementations of vxfs may differ in on-disk
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data endianness and/or superblock offset. The vxfs module has been
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tested with SCO UnixWare and HP-UX B.10.20 (pa-risc 1.1 arch.)
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Currently only readonly access is supported and VxFX versions
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2, 3 and 4. Tests were performed with HP-UX VxFS version 3.
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NOTE: the file system type as used by mount(1), mount(2) and
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fstab(5) is 'vxfs' as it describes the file system format, not
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the actual driver.
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There is a userspace utility for HP-UX logical volumes which makes
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creating HP-UX logical volumes easy from HP-UX disk block device file
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or regular file with image of the disk. See:
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https://sourceforge.net/projects/linux-vxfs/
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To compile this as a module, choose M here: the module will be
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called freevxfs. If unsure, say N.
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