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a24c8b5111
There are some compile errors reported by kernel test robot:
arm-linux-gnueabi-ld: fs/romfs/storage.o: in function `romfs_dev_read':
storage.c:(.text+0x64): undefined reference to `__brelse'
arm-linux-gnueabi-ld: storage.c:(.text+0x9c): undefined reference to `__bread_gfp'
arm-linux-gnueabi-ld: fs/romfs/storage.o: in function `romfs_dev_strnlen':
storage.c:(.text+0x128): undefined reference to `__brelse'
arm-linux-gnueabi-ld: storage.c:(.text+0x16c): undefined reference to `__bread_gfp'
arm-linux-gnueabi-ld: fs/romfs/storage.o: in function `romfs_dev_strcmp':
storage.c:(.text+0x22c): undefined reference to `__bread_gfp'
arm-linux-gnueabi-ld: storage.c:(.text+0x27c): undefined reference to `__brelse'
arm-linux-gnueabi-ld: storage.c:(.text+0x2a8): undefined reference to `__bread_gfp'
arm-linux-gnueabi-ld: storage.c:(.text+0x2bc): undefined reference to `__brelse'
arm-linux-gnueabi-ld: storage.c:(.text+0x2d4): undefined reference to `__brelse'
arm-linux-gnueabi-ld: storage.c:(.text+0x2f4): undefined reference to `__brelse'
arm-linux-gnueabi-ld: storage.c:(.text+0x304): undefined reference to `__brelse'
The reason for the problem is that the commit
"925c86a19bac" ("fs: add CONFIG_BUFFER_HEAD") has added a new config
"CONFIG_BUFFER_HEAD" that controls building the buffer_head code, and
romfs needs to use the buffer_head API, but no corresponding config has
beed added. Select the config "CONFIG_BUFFER_HEAD" in romfs Kconfig to
resolve the problem.
Fixes: 925c86a19b ("fs: add CONFIG_BUFFER_HEAD")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202308031810.pQzGmR1v-lkp@intel.com/
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Tested-by: Li Zetao <lizetao1@huawei.com>
Signed-off-by: Li Zetao <lizetao1@huawei.com>
[axboe: fold in Christoph's incremental]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
64 lines
1.9 KiB
Text
64 lines
1.9 KiB
Text
# SPDX-License-Identifier: GPL-2.0-only
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config ROMFS_FS
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tristate "ROM file system support"
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depends on BLOCK || MTD
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help
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This is a very small read-only file system mainly intended for
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initial ram disks of installation disks, but it could be used for
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other read-only media as well. Read
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<file:Documentation/filesystems/romfs.rst> for details.
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To compile this file system support as a module, choose M here: the
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module will be called romfs. Note that the file system of your
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root partition (the one containing the directory /) cannot be a
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module.
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If you don't know whether you need it, then you don't need it:
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answer N.
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#
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# Select the backing stores to be supported
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#
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choice
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prompt "RomFS backing stores"
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depends on ROMFS_FS
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default ROMFS_BACKED_BY_BLOCK
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help
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Select the backing stores to be supported.
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config ROMFS_BACKED_BY_BLOCK
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bool "Block device-backed ROM file system support"
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depends on BLOCK
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help
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This permits ROMFS to use block devices buffered through the page
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cache as the medium from which to retrieve data. It does not allow
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direct mapping of the medium.
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If unsure, answer Y.
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config ROMFS_BACKED_BY_MTD
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bool "MTD-backed ROM file system support"
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depends on MTD=y || (ROMFS_FS=m && MTD)
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help
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This permits ROMFS to use MTD based devices directly, without the
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intercession of the block layer (which may have been disabled). It
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also allows direct mapping of MTD devices through romfs files under
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NOMMU conditions if the underlying device is directly addressable by
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the CPU.
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If unsure, answer Y.
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config ROMFS_BACKED_BY_BOTH
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bool "Both the above"
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depends on BLOCK && (MTD=y || (ROMFS_FS=m && MTD))
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endchoice
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config ROMFS_ON_BLOCK
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bool
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default y if ROMFS_BACKED_BY_BLOCK || ROMFS_BACKED_BY_BOTH
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select BUFFER_HEAD
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config ROMFS_ON_MTD
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bool
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default y if ROMFS_BACKED_BY_MTD || ROMFS_BACKED_BY_BOTH
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