tmpfs: ZERO_RANGE and COLLAPSE_RANGE not currently supported
authorHugh Dickins <hughd@google.com>
Mon, 23 Jun 2014 20:22:03 +0000 (13:22 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Mon, 23 Jun 2014 23:47:43 +0000 (16:47 -0700)
commit13ace4d0d9db40e10ecd66dfda14e297571be813
tree9ed45b2ee2053f1b0fd8f1efd0f9c5c3d8f5671c
parent7cdb0d25bc93e936edbfde12fe277ee21b88c1ef
tmpfs: ZERO_RANGE and COLLAPSE_RANGE not currently supported

I was well aware of FALLOC_FL_ZERO_RANGE and FALLOC_FL_COLLAPSE_RANGE
support being added to fallocate(); but didn't realize until now that I
had been too stupid to future-proof shmem_fallocate() against new
additions.  -EOPNOTSUPP instead of going on to ordinary fallocation.

Signed-off-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Lukas Czerner <lczerner@redhat.com>
Cc: <stable@vger.kernel.org> [3.15]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/shmem.c