[Libguestfs] [PATCH 0/3] file: Zero for block devices and older file systems

[Nir Soffer]

This is the second version to support efficient zero for block devices
on older kernels (e.g. RHEL 7.5), and file systems that do not support
yet FALLOC_FS_ZERO_RANGE (e.g. NFS 4.2).

Changes since v1:
- Split to smaller patches
- Skip linux only includes on other systems
- Skip code using BLKZEROOUT if the macro is not defined
- Try BLKZEROOUT only if the offset and count are aligned to device
  sector size.

v1 was here:
https://www.redhat.com/archives/libguestfs/2018-July/msg00084.html

Nir Soffer (3):
  file: Avoid unsupported fallocate() calls
  file: Support zero without ZERO_RANGE
  file: Zero for block devices on old kernels

 plugins/file/file.c | 194 +++++++++++++++++++++++++++++++++-----------
 1 file changed, 147 insertions(+), 47 deletions(-)

-- 
2.17.1