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| author |   ruippan (潘睿) <ruippan@tencent.com> | 2018-12-04 01:04:12 -0500 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2018-12-04 01:04:12 -0500 |
| commit | e647e29196b7f802f8242c39ecb7cc937f5ef217 (patch) | |
| tree | c4d3fd81d0acf4293cad2962d560cdaa68512359 /fs/ext4 | |
| parent | ext4: hard fail dax mount on unsupported devices (diff) | |
| download | linux-dev-e647e29196b7f802f8242c39ecb7cc937f5ef217.tar.xz linux-dev-e647e29196b7f802f8242c39ecb7cc937f5ef217.zip | |
ext4: fix EXT4_IOC_GROUP_ADD ioctl
Commit e2b911c53584 ("ext4: clean up feature test macros with
predicate functions") broke the EXT4_IOC_GROUP_ADD ioctl. This was
not noticed since only very old versions of resize2fs (before
e2fsprogs 1.42) use this ioctl. However, using a new kernel with an
enterprise Linux userspace will cause attempts to use online resize to
fail with "No reserved GDT blocks".
Fixes: e2b911c53584 ("ext4: clean up feature test macros with predicate...")
Cc: stable@kernel.org # v4.4
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: ruippan (潘睿) <ruippan@tencent.com>
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/resize.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index 87350b642681..bc8ee0c498cc 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -1631,7 +1631,7 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input) } if (reserved_gdb || gdb_off == 0) { - if (ext4_has_feature_resize_inode(sb) || + if (!ext4_has_feature_resize_inode(sb) || !le16_to_cpu(es->s_reserved_gdt_blocks)) { ext4_warning(sb, "No reserved GDT blocks, can't resize"); |