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authorDarrick J. Wong <darrick.wong@oracle.com>2015-10-15 10:30:36 -0400
committerTheodore Ts'o <tytso@mit.edu>2015-10-15 10:30:36 -0400
commit8595798ca34d186d39abcb277591e541776c0ef5 (patch)
tree2a88574a18479f688e837cf4169b58d438e9d5bf /fs/Makefile
parentb90197b655185a11640cce3a0a0bc5d8291b8ad2 (diff)
downloadlinux-8595798ca34d186d39abcb277591e541776c0ef5.tar.bz2
jbd2: gate checksum calculations on crc driver presence, not sb flags
Change the journal's checksum functions to gate on whether or not the crc32c driver is loaded, and gate the loading on the superblock bits. This prevents a journal crash if someone loads a journal in no-csum mode and then randomizes the superblock, thus flipping on the feature bits. Tested-By: Nikolay Borisov <kernel@kyup.com> Reported-by: Nikolay Borisov <kernel@kyup.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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