Theodore Ts'o d0efd17a43 e2fsck: check and fix tails of all bitmap blocks ... Currently, e2fsck effectively checks only tail of the last inode and block bitmap in the filesystem. Thus if some previous bitmap has unset bits it goes unnoticed. Mostly these tail bits in the bitmap are ignored; however, if blocks_per_group are smaller than 8*blocksize, the multi-block allocator in the kernel can get confused when the tail bits are unset and return bogus free extent. Add support to libext2fs to check these bitmap tails when loading bitmaps (as that's about the only place which has access to the bitmap tail bits) and make e2fsck use this functionality to detect buggy bitmap tails and fix them (by rewriting the bitmaps). Reported-by: Jan Kara <jack@suse.cz> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Jan Kara <jack@suse.cz>		2019-05-06 10:15:29 -04:00
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expect.1	e2fsck: check and fix tails of all bitmap blocks	2019-05-06 10:15:29 -04:00
expect.2	Change e2fsck to use a red/black tree in pass1b, to remove O(n**2)	2002-08-01 12:37:00 -04:00
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