btrfs: disable build on platforms having page size 256K
With a config having PAGE_SIZE set to 256K, BTRFS build fails with the following message include/linux/compiler_types.h:326:38: error: call to '__compiletime_assert_791' declared with attribute error: BUILD_BUG_ON failed: (BTRFS_MAX_COMPRESSED % PAGE_SIZE) != 0 BTRFS_MAX_COMPRESSED being 128K, BTRFS cannot support platforms with 256K pages at the time being. There are two platforms that can select 256K pages: - hexagon - powerpc Disable BTRFS when 256K page size is selected. Supporting this would require changes to the subpage mode that's currently being developed. Given that 256K is many times larger than page sizes commonly used and for what the algorithms and structures have been tuned, it's out of scope and disabling build is a reasonable option. Reported-by:kernel test robot <lkp@intel.com> Signed-off-by:
Christophe Leroy <christophe.leroy@csgroup.eu> [ update changelog ] Signed-off-by:
David Sterba <dsterba@suse.com>
parent
d8ac76cd
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