From: Guenter Roeck linux@roeck-us.net
[ Upstream commit 4eec7faf6775263d9e450ae7ee5bc4101d4a0bc9 ]
NTFS_RW code allocates page size dependent arrays on the stack. This results in build failures if the page size is 64k or larger.
fs/ntfs/aops.c: In function 'ntfs_write_mst_block': fs/ntfs/aops.c:1311:1: error: the frame size of 2240 bytes is larger than 2048 bytes
Since commit f22969a66041 ("powerpc/64s: Default to 64K pages for 64 bit book3s") this affects ppc:allmodconfig builds, but other architectures supporting page sizes of 64k or larger are also affected.
Increasing the maximum frame size for affected architectures just to silence this error does not really help. The frame size would have to be set to a really large value for 256k pages. Also, a large frame size could potentially result in stack overruns in this code and elsewhere and is therefore not desirable. Make NTFS_RW dependent on page sizes smaller than 64k instead.
Signed-off-by: Guenter Roeck linux@roeck-us.net Cc: Anton Altaparmakov anton@tuxera.com Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ntfs/Kconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/fs/ntfs/Kconfig b/fs/ntfs/Kconfig index de9fb5cff2269..026ec41418049 100644 --- a/fs/ntfs/Kconfig +++ b/fs/ntfs/Kconfig @@ -52,6 +52,7 @@ config NTFS_DEBUG config NTFS_RW bool "NTFS write support" depends on NTFS_FS + depends on PAGE_SIZE_LESS_THAN_64KB help This enables the partial, but safe, write support in the NTFS driver.