Trying some of the ideas bounced around in lkml for optimizing swap on flash (eMMC / SD) media [1], we can start to add useful information into swapheader without breaking compatibility. Such information can help the kernel swap management algo to tune itself to the geometry of flash devices (erase block size and page size etc). Some more features (like command line override) are still under development. In long term, libblkid/mkswap can be extended to even detect this information by timing attacks, even if sysfs parameters are not present. Venkatraman S (4): libblkid/topology: add preferred_erase_size to topology probe mkswap: refactor header preparation mkswap: Add additional fields in swapheader mkswap: Probe and embed useful block device info into swapheader disk-utils/mkswap.c | 77 ++++++++++++++++++++++++++++++++-------- include/swapheader.h | 7 +++- libblkid/src/topology/sysfs.c | 1 + libblkid/src/topology/topology.c | 19 ++++++++++ libblkid/src/topology/topology.h | 1 + 5 files changed, 90 insertions(+), 15 deletions(-) -- 1.7.11.1.25.g0e18bef -- To unsubscribe from this list: send the line "unsubscribe util-linux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
