This is the second revision of my MAP_SYNC + dm-log-writes support for xfsprogs. The previous revision can be found here: https://lists.01.org/pipermail/linux-nvdimm/2017-November/013326.html Changes since v1: - Updated the dm-log-writes support so that it uses libdevmapper instead of calling the "dmsetup" stand-alone exectuable via system(). (Eric and Darrick) - Fixed our MAP_SYNC handling so that instead of defining the flags for systems that don't have them in the headers, just set them to 0 and fail when the -S flag is used. (Dan) You can find an xfsprogs branch with this series here: https://git.kernel.org/pub/scm/linux/kernel/git/zwisler/xfsprogs-dev.git/log/?h=map_sync_v2 Both MAP_SYNC and the DAX enhancements for dm-log-writes can be found in v4.15-rc*. For ease of testing I've posted a kernel that is v4.14 plus just those two patch series here: https://git.kernel.org/pub/scm/linux/kernel/git/zwisler/linux.git/log/?h=map_sync_dm_log_writes --- As suggested by Dave Chinner: As I say to all these sorts of one-off test prgrams: please add the new MAP_SYNC flag to xfs_io rather than writing a one-off test program to set it and write some data. And if we're going to be adding special custom tests just because we need to insert dm-log marks, add that functionality to xfs_io, too. That way we can create complex custom dm logwrite tests without needing one-off test programs for them all... This series enhances xfs_io by adding support for the MAP_SYNC mmap() flag and for dm-log-writes marks. This allows the resulting xfstest for MAP_SYNC to be much simpler and have no custom C programs. Ross Zwisler (3): xfs_io: fix compiler warnings in getfsmap code xfs_io: add MAP_SYNC support to mmap() xfs_io: add a new 'log_writes' command configure.ac | 2 + debian/control | 2 +- include/builddefs.in | 3 ++ include/linux.h | 8 ++++ io/Makefile | 10 +++++ io/fsmap.c | 4 +- io/init.c | 1 + io/io.h | 7 ++++ io/log_writes.c | 101 ++++++++++++++++++++++++++++++++++++++++++++++++ io/mmap.c | 23 ++++++++--- m4/Makefile | 1 + m4/package_devmapper.m4 | 11 ++++++ m4/package_libcdev.m4 | 16 ++++++++ man/man8/xfs_io.8 | 29 +++++++++++++- 14 files changed, 208 insertions(+), 10 deletions(-) create mode 100644 io/log_writes.c create mode 100644 m4/package_devmapper.m4 -- 2.14.3 -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
