Add support for checksumming the swap pages written to disk, using the
same checksum as btrfs (crc32c). Since the contents of the swap do not
matter after a shutdown, the checksum is kept in memory only.
Note that this code does not checksum the software suspend image.
Cesar Eduardo Barros (3):
mm/swapfile.c: better messages for swap_info_get
kernel/power/swap.c: do not use end_swap_bio_read
mm: Swap checksum
include/linux/swap.h | 31 +++++++-
kernel/power/swap.c | 21 +++++-
mm/Kconfig | 22 +++++
mm/Makefile | 1 +
mm/page_io.c | 92 ++++++++++++++++++--
mm/swapcsum.c | 94 +++++++++++++++++++++
mm/swapfile.c | 186 ++++++++++++++++++++++++++++++++++++++++--
7 files changed, 429 insertions(+), 18 deletions(-)
create mode 100644 mm/swapcsum.c
--
Cesar Eduardo Barros
cesarb@xxxxxxxxxx
cesar.barros@xxxxxxxxx
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