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Subject[PATCH] fs: btrfs: Disable BTRFS on platforms having 256K pages
Date
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.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
---
fs/btrfs/Kconfig | 2 ++
1 file changed, 2 insertions(+)

diff --git a/fs/btrfs/Kconfig b/fs/btrfs/Kconfig
index 68b95ad82126..520a0f6a7d9e 100644
--- a/fs/btrfs/Kconfig
+++ b/fs/btrfs/Kconfig
@@ -18,6 +18,8 @@ config BTRFS_FS
select RAID6_PQ
select XOR_BLOCKS
select SRCU
+ depends on !PPC_256K_PAGES # powerpc
+ depends on !PAGE_SIZE_256KB # hexagon

help
Btrfs is a general purpose copy-on-write filesystem with extents,
--
2.25.0
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