emacs/lib/copy-file-range.c, branch feature/soc-bytecode-in-traceback Emacs is the extensible, customizable, self-documenting real-time display editor. Update copyright year to 2020 2020-01-01T00:59:52+00:00 Paul Eggert 2020-01-01T00:19:43+00:00 365e01cc9f64ce6ca947ccfd8612d60763280a37 Run "TZ=UTC0 admin/update-copyright $(git ls-files)". 
Run "TZ=UTC0 admin/update-copyright $(git ls-files)".
Use copy_file_range to copy files 2019-06-07T07:44:45+00:00 Paul Eggert 2019-06-07T04:18:11+00:00 486a81f387bb59b2fbbc6aff7b41adbe1621394e The copy_file_range syscall (introduced in Linux kernel version 4.5) can copy files more efficiently via server-side copy etc. * admin/merge-gnulib (GNULIB_MODULES): Add copy-file-range. * lib/copy-file-range.c, m4/copy-file-range.m4: New files, copied from Gnulib. * lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate. * src/fileio.c (Fcopy_file): Try copy_file_range first, falling back on read+write only if copy_file_range failed or if the input is empty and so could be a /proc file. 
The copy_file_range syscall (introduced in Linux kernel
version 4.5) can copy files more efficiently via server-side
copy etc.
* admin/merge-gnulib (GNULIB_MODULES): Add copy-file-range.
* lib/copy-file-range.c, m4/copy-file-range.m4:
New files, copied from Gnulib.
* lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate.
* src/fileio.c (Fcopy_file): Try copy_file_range first,
falling back on read+write only if copy_file_range failed or
if the input is empty and so could be a /proc file.