On Thu, Aug 2, 2018 at 10:06 PM Nir Soffer <[email protected]> wrote: > 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. >
Other changes I forgot to mention (interrupted by a child): - initialize h->can_* properly. Before they were uninitialized if FALLOC_FL_* macros were not defined. - Use new h->can_punch_hole in file_can_trim, so now we report the actual capability once we detected it. - Use h->can_punch_hole in file_trim, so we try only once if the operation is not supported. > 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 > >
_______________________________________________ Libguestfs mailing list [email protected] https://www.redhat.com/mailman/listinfo/libguestfs
