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misc: don't allow mk_hugefiles unless the fs supports extents 

The current mk_hugefile code in mke2fs doesn't support creating
non-extent files, so disable the functionality when we're mkfs'ing
without extent support.

The fallocate patches further on will eliminate the need for this.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
crypto
Darrick J. Wong 2014-12-13 21:50:13 -05:00 committed by Theodore Ts'o
parent ffe1b28dea
commit fc4f5b2240
1 changed files with 4 additions and 0 deletions
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misc/mk_hugefiles.c
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@ -476,6 +476,10 @@ errcode_t mk_hugefiles(ext2_filsys fs, const char *device_name)
if (!get_bool_from_profile(fs_types, "make_hugefiles", 0))
return 0;
if (!EXT2_HAS_INCOMPAT_FEATURE(fs->super,
EXT3_FEATURE_INCOMPAT_EXTENTS))
return EXT2_ET_EXTENT_NOT_SUPPORTED;
uid = get_int_from_profile(fs_types, "hugefiles_uid", 0);
gid = get_int_from_profile(fs_types, "hugefiles_gid", 0);
fs->umask = get_int_from_profile(fs_types, "hugefiles_umask", 077);