fs: ntfs: Limit NTFS_RW to page sizes smaller than 64k

4eec7faf · Guenter Roeck <[email protected]> · 2021-11-27 07:44:41 -08:00

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 <[email protected]>
Cc: Anton Altaparmakov <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Commit

4eec7faf6775263d9e450ae7ee5bc4101d4a0bc9

Parents

1f0e290c

Changes

1 files changed · +1 −0