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ext4: fix EXT4_IOC_GROUP_ADD ioctl
Commite2b911c535
("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:e2b911c535
("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>
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@ -1631,7 +1631,7 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
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}
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}
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if (reserved_gdb || gdb_off == 0) {
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if (reserved_gdb || gdb_off == 0) {
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if (ext4_has_feature_resize_inode(sb) ||
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if (!ext4_has_feature_resize_inode(sb) ||
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!le16_to_cpu(es->s_reserved_gdt_blocks)) {
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!le16_to_cpu(es->s_reserved_gdt_blocks)) {
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ext4_warning(sb,
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ext4_warning(sb,
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"No reserved GDT blocks, can't resize");
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"No reserved GDT blocks, can't resize");
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