config/lustre-build-ldiskfs.m4

@@ -13,6 +13,7 @@ esac
 AS_IF([test -z "$LDISKFS_SERIES"], [
 AS_IF([test x$RHEL_KERNEL = xyes], [
 	case $RHEL_RELEASE_NO in
+	79)	LDISKFS_SERIES="3.10-rhel7.9.series"	;;
 	78)	LDISKFS_SERIES="3.10-rhel7.8.series"	;;
 	77)	LDISKFS_SERIES="3.10-rhel7.7.series"	;;
 	76)	LDISKFS_SERIES="3.10-rhel7.6.series"	;;

ldiskfs/kernel_patches/patches/base/ext4-no-max-dir-size-limit-for-iam-objects.patch

@@ -0,0 +1,29 @@
+Index: linux-3.10.0-957.27.2.el7/fs/ext4/ext4.h
+===================================================================
+--- linux-3.10.0-957.27.2.el7.orig/fs/ext4/ext4.h
++++ linux-3.10.0-957.27.2.el7/fs/ext4/ext4.h
+@@ -1539,6 +1539,7 @@ enum {
+ 	EXT4_STATE_NO_EXPAND,		/* No space for expansion */
+ 	EXT4_STATE_DA_ALLOC_CLOSE,	/* Alloc DA blks on close */
+ 	EXT4_STATE_EXT_MIGRATE,		/* Inode is migrating */
++	EXT4_STATE_IAM,			/* Lustre IAM objects */
+ 	EXT4_STATE_DIO_UNWRITTEN,	/* need convert on dio done*/
+ 	EXT4_STATE_NEWENTRY,		/* File just added to dir */
+ 	EXT4_STATE_DIOREAD_LOCK,	/* Disable support for dio read
+Index: linux-3.10.0-957.27.2.el7/fs/ext4/namei.c
+===================================================================
+--- linux-3.10.0-957.27.2.el7.orig/fs/ext4/namei.c
++++ linux-3.10.0-957.27.2.el7/fs/ext4/namei.c
+@@ -58,8 +58,10 @@ struct buffer_head *ext4_append(handle_t
+
+ 	if (unlikely(EXT4_SB(inode->i_sb)->s_max_dir_size_kb &&
+ 		     ((inode->i_size >> 10) >=
+-		      EXT4_SB(inode->i_sb)->s_max_dir_size_kb)))
+-		return ERR_PTR(-ENOSPC);
++		      EXT4_SB(inode->i_sb)->s_max_dir_size_kb))) {
++		if (!ext4_test_inode_state(inode, EXT4_STATE_IAM))
++			return ERR_PTR(-ENOSPC);
++	}
+
+ 	/* with parallel dir operations all appends
+ 	* have to be serialized -bzzz */