033c3384902e9672267022405d29b8a36eb8a9a9 |
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03-Aug-2012 |
Darrick J. Wong <djwong@us.ibm.com> |
libext2fs: optimize the CRC32c implementation The crc32c implementation in the kernel has been refactored a bit to reduce the amount of code that needs to be maintained, and to speed up tune2fs/e2fsck on PowerPC by 5-10%. Port the crc32c changes over, and provide a crc32_be so that we can remove the duplicate functionality from e2fsck. Also drop crc32c_be and crc32_le since neither got used. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
/external/e2fsprogs/lib/ext2fs/crc32c_defs.h
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8232f2ddaece256afd323eb5a289a5ec1b7fbd1a |
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04-Oct-2011 |
Theodore Ts'o <tytso@mit.edu> |
libext2fs: move #include "ext2fs.h" from crc32c_defs.h to crc32c.c The byte swap functions which are defined in ext2fs.h are only needed by crc32.c, and not by gen_crc32ctable.c. The gen_crc32ctable program needs to be compiled on the host OS, where ext2fs.h may not be present. So move the use of the header function to crc32c.c, to avoid compilation problems. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
/external/e2fsprogs/lib/ext2fs/crc32c_defs.h
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a378bd5a5a80656ad1782ee80fa301a5ecb10ecb |
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29-Sep-2011 |
Theodore Ts'o <tytso@mit.edu> |
libext2fs: use ext2fs byte swap functions for portability The functions htole32(), le32toh(), be32toh(), htobe32() aren't defined in all environments. Use the ext2fs byte swap functions for portability. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
/external/e2fsprogs/lib/ext2fs/crc32c_defs.h
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db8bbf27c9eeaa9c1803fb52a6cc7a60c5250c7e |
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16-Sep-2011 |
Darrick J. Wong <djwong@us.ibm.com> |
libext2fs: Add crc32c implementation for metadata checksumming Add a slicing-by-8 CRC32c implementation for metadata checksumming. Adapted from Bob Pearson's kernel patch. Also added a self-test mechanism so we can verify that the crc32c implementation is working correctly. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
/external/e2fsprogs/lib/ext2fs/crc32c_defs.h
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