From: "Theodore Ts'o" Subject: [PATCH, E2FSPROGS] On-disk format definition for huge files Date: Wed, 18 Oct 2006 02:21:51 -0400 Message-ID: Return-path: Received: from thunk.org ([69.25.196.29]:10893 "EHLO thunker.thunk.org") by vger.kernel.org with ESMTP id S1751446AbWJRGVz (ORCPT ); Wed, 18 Oct 2006 02:21:55 -0400 To: linux-ext4@vger.kernel.org Sender: linux-ext4-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org Comments? - Ted On-disk format definition for huge files - EXT4_FEATURE_RO_COMPAT_HUGE_FILE (0x0008) - change i_blocks to be in units of s_blocksize units instead of 512-byte sectors, use l_i_frag and l_i_fsize as i_blocks_hi (could also be part of 64BIT). Signed-off-by: "Theodore Ts'o" Index: e2fsprogs/lib/ext2fs/ext2_fs.h =================================================================== --- e2fsprogs.orig/lib/ext2fs/ext2_fs.h 2006-10-18 02:20:25.000000000 -0400 +++ e2fsprogs/lib/ext2fs/ext2_fs.h 2006-10-18 02:20:35.000000000 -0400 @@ -321,8 +321,7 @@ __u32 i_faddr; /* Fragment address */ union { struct { - __u8 l_i_frag; /* Fragment number */ - __u8 l_i_fsize; /* Fragment size */ + __u16 l_i_blocks_hi; __u16 i_pad1; __u16 l_i_uid_high; /* these 2 fields */ __u16 l_i_gid_high; /* were reserved2[0] */ @@ -601,6 +600,7 @@ #define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 #define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 /* #define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 not used */ +#define EXT4_FEATURE_RO_COMPAT_HUGE_FILE 0x0008 #define EXT2_FEATURE_INCOMPAT_COMPRESSION 0x0001 #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002