3  *  linux/fs/ext4/resize.c
65 	 * If we are not using the primary superblock/GDT copy don't resize,  in ext4_resize_begin()
71 		ext4_warning(sb, "won't resize using backup superblock at %llu",  in ext4_resize_begin()
213  * ext4_new_flex_group_data is used by 64bit-resize interface to add a flex
293  * This function is used by 64bit-resize.  Note that this function allocates
519  * ensure the recovery is correct in case of a failure just after resize.
520  * If any part of this fails, we simply abort the resize.
807  * use from the resize inode.  The primary copy of the new GDT block currently
808  * is an indirect block (under the double indirect block in the resize inode).
811  * we check to ensure that the resize inode has actually reserved these blocks.
1007  * We need to add these reserved backup GDT blocks to the resize inode, so
1125  * of the main resize transaction, because e2fsck will re-write them if there
1136  * do not copy the full number of backups at this time.  The resize
1223 	 * late to revert the resize, we shouldn't fail just because of  in update_backups()
1248  * @resize_inode: the resize inode
1565 	credit = 3;	/* sb, resize inode, resize inode dindirect */  in ext4_flex_group_add()
1714 		ext4_warning(sb, "Can't resize non-sparse filesystem further");  in ext4_group_add()
1734 				     "No reserved GDT blocks, can't resize");  in ext4_group_add()
1739 			ext4_warning(sb, "Error opening resize inode");  in ext4_group_add()
1826  * existing group.  It can be accessed via ioctl, or by "remount,resize=<size>"
1854 			 "filesystem too large to resize to %llu blocks safely",  in ext4_group_extend()
1860 		ext4_warning(sb, "can't shrink FS - resize aborted");  in ext4_group_extend()
1868 		ext4_warning(sb, "need to use ext2online to resize further");  in ext4_group_extend()
1889 		ext4_warning(sb, "can't read last block, resize aborted");  in ext4_group_extend()
1904  * Release the resize inode and drop the resize_inode feature if there
1926 		/* Do a quick sanity check of the resize inode */  in ext4_convert_meta_bg()
1940 		credits += 3;	/* block bitmap, bg descriptor, resize inode */  in ext4_convert_meta_bg()
1985 	ext4_error(sb, "corrupted/inconsistent resize inode");  in ext4_convert_meta_bg()
2017 		ext4_warning(sb, "can't read last block, resize aborted");  in ext4_resize_fs()
2026 	 * callers that blindly resize the filesystem to the full size of  in ext4_resize_fs()
2040 		ext4_warning(sb, "can't shrink FS - resize aborted");  in ext4_resize_fs()
2050 		ext4_warning(sb, "resize would cause inodes_count overflow");  in ext4_resize_fs()
2082 			ext4_warning(sb, "Error opening resize inode");  in ext4_resize_fs()
2187 			     "file system resize", err);  in ext4_resize_fs()