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Darrick J. Wong d7c64cdc96 libext2fs: no need to clear BLOCK_UNINIT during ext2fs_reserve_super_and_bgd 
Since the beginning of the uninit_bg feature, the kernel[1] and
e2fsck[2] have always been careful to detect the presence of the
BLOCK_UNINIT flag, and compute a block bitmap with any group metadata
blocks marked in that bitmap.  With that in mind, I think it's safe to
say that this is a design feature of uninit_bg.

Now that we've trained libext2fs to have this same behavior whenever
it's loading a block bitmap, we no longer need to unset BLOCK_UNINIT
for a group that contains only its own group metadata -- kernel,
e2fsck, and e2fsprogs will handle this correctly.

[1] kernel git 717d50e4971b81b96c0199c91cdf0039a8cb181a
    "Ext4: Uninitialized Block Groups"
[2] e2fsprogs git f5fa20078b
    "Add support for EXT2_FEATURE_COMPAT_LAZY_BG"

Reported-by: Akira Fujita <a-fujita@rs.jp.nec.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2014-01-11 14:15:51 -05:00
..
blkid libblkid: add error checking for rename() while saving the blkid cache 2014-01-10 22:09:45 -05:00
e2p e2fsck: verify s_desc_size is power-of-two value 2013-12-23 16:03:46 -05:00
et Use makeinfo --html instead of texi2html 2013-12-28 15:40:56 -05:00
ext2fs libext2fs: no need to clear BLOCK_UNINIT during ext2fs_reserve_super_and_bgd 2014-01-11 14:15:51 -05:00
quota libquota: add error checking to quota_remove_inode 2014-01-07 09:10:24 -05:00
ss libss: fix potential null dereference if realloc() fails 2014-01-10 21:13:15 -05:00
uuid libuuid: add error checking to syscalls in get_clock() 2014-01-10 21:06:07 -05:00
config.h.in e4defrag: choose the best available posix_fadvise variant 2014-01-05 22:55:10 -05:00
dirpaths.h.in Shorten compile commands run by the build system 2011-09-18 17:34:37 -04:00
fpopen.c Shorten compile commands run by the build system 2011-09-18 17:34:37 -04:00
Makefile.bsd-lib Include LDFLAGS when building BSD libraries 2012-05-11 22:21:08 -04:00
Makefile.checker Add configure options --enable-symlink-build and --enable-symlink-install 2010-05-17 19:21:42 -04:00
Makefile.darwin-lib Add configure options --enable-symlink-build and --enable-symlink-install 2010-05-17 19:21:42 -04:00
Makefile.elf-lib Put ELF_OTHER_LIBS in the right place for the linker 2012-08-06 12:30:49 -04:00
Makefile.library Add configure options --enable-symlink-build and --enable-symlink-install 2010-05-17 19:21:42 -04:00
Makefile.profile Add configure options --enable-symlink-build and --enable-symlink-install 2010-05-17 19:21:42 -04:00
Makefile.solaris-lib Put ELF_OTHER_LIBS in the right place for the linker 2012-08-06 12:30:49 -04:00