[source] f2fs-tools: fix mkfs.f2fs on big-endian systems

[LEDE Commits]

stintel pushed a commit to source.git, branch lede-17.01:
https://git.lede-project.org/f62a31d0e98f125a5c4d5bc8c0b33bb8de53938b

commit f62a31d0e98f125a5c4d5bc8c0b33bb8de53938b
Author: Stijn Tintel <stijn at linux-ipv6.be>
AuthorDate: Thu Aug 24 10:04:15 2017 +0300

    f2fs-tools: fix mkfs.f2fs on big-endian systems
    
    Fixes: FS#749
    
    Signed-off-by: Stijn Tintel <stijn at linux-ipv6.be>
    (cherry picked from commit cdb494fdc2d3399e698893ff0cfd06d3c802364f)
---
 package/utils/f2fs-tools/Makefile                  |  2 +-
 ...G-at-fs-f2fs-segment.c-718-update_sit_ent.patch | 66 ++++++++++++++++++++++
 2 files changed, 67 insertions(+), 1 deletion(-)

diff --git a/package/utils/f2fs-tools/Makefile b/package/utils/f2fs-tools/Makefile
index 5cef40a..8a27c47 100644
--- a/package/utils/f2fs-tools/Makefile
+++ b/package/utils/f2fs-tools/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=f2fs-tools
 PKG_VERSION:=1.8.0
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_LICENSE:=GPLv2
 
diff --git a/package/utils/f2fs-tools/patches/100-f2fs-WARNING-at-fs-f2fs-segment.c-718-update_sit_ent.patch b/package/utils/f2fs-tools/patches/100-f2fs-WARNING-at-fs-f2fs-segment.c-718-update_sit_ent.patch
new file mode 100644
index 0000000..d4e2539
--- /dev/null
+++ b/package/utils/f2fs-tools/patches/100-f2fs-WARNING-at-fs-f2fs-segment.c-718-update_sit_ent.patch
@@ -0,0 +1,66 @@
+From 31873d5cdf8a97d5f7921451c54f6d293293c6cc Mon Sep 17 00:00:00 2001
+From: Jaegeuk Kim <jaegeuk at kernel.org>
+Date: Wed, 23 Aug 2017 13:33:00 -0700
+Subject: [PATCH] mkfs.f2fs: fix missing cpu_to_le64 for checkpoint version
+
+The error on mips was reported by Stijn as follow.
+
+Commit 8399a29df92d6867d226df362edbf2e0efa527c1 in f2fs-tools
+("mkfs.f2fs: give random checkpoint version") causes a bug when mounting
+a filesystem created with it on a MIPS64 device running a 4.4(.83)
+kernel. The following kernel warning appears several times per second,
+for 30 seconds:
+
+[   23.837262] ------------[ cut here ]------------
+[   23.842039] WARNING: CPU: 0 PID: 935 at fs/f2fs/segment.c:718
+update_sit_entry+0x1c0/0x2b0()
+[   23.850507] Modules linked in: pppoe ppp_async l2tp_ppp iptable_nat
+[   24.174064] Call Trace:
+[   24.176527] [<ffffffff81126e14>] show_stack+0x68/0xb4
+[   24.181595] [<ffffffff81321fc4>] dump_stack+0x8c/0xc4
+[   24.186660] [<ffffffff8113d004>] warn_slowpath_common+0xa0/0xd0
+[   24.192597] [<ffffffff812e0148>] update_sit_entry+0x1c0/0x2b0
+[   24.198353] [<ffffffff812e0a70>] refresh_sit_entry+0x70/0xf8
+[   24.204022] [<ffffffff812e251c>] allocate_data_block+0x1f0/0x310
+[   24.210038] [<ffffffff812e28d8>] do_write_page+0x29c/0x2bc
+[   24.215532] [<ffffffff812e2a88>] write_data_page+0xa0/0xd8
+[   24.221028] [<ffffffff812d844c>] do_write_data_page+0xe4/0x384
+[   24.226870] [<ffffffff812d88f4>] f2fs_write_data_page+0x208/0x464
+[   24.232972] [<ffffffff812d5184>] __f2fs_writepage+0x1c/0x74
+[   24.238553] [<ffffffff812d54dc>]
+f2fs_write_cache_pages.constprop.7+0x250/0x394
+[   24.245869] [<ffffffff812d57f4>] f2fs_write_data_pages+0x130/0x1b0
+[   24.252066] [<ffffffff811a9f80>] __filemap_fdatawrite_range+0xa0/0xd4
+[   24.258515] [<ffffffff812d2338>] sync_dirty_dir_inodes+0x94/0xd8
+[   24.264530] [<ffffffff812d2484>] write_checkpoint+0x108/0xb9c
+[   24.270283] [<ffffffff812cc398>] f2fs_sync_fs+0x68/0xb0
+[   24.275526] [<ffffffff812c641c>] f2fs_sync_file+0x2e8/0x518
+[   24.281107] [<ffffffff81213ff4>] do_fsync+0x38/0x70
+[   24.285992] [<ffffffff812142e8>] SyS_fsync+0x14/0x20
+[   24.290972] [<ffffffff81103950>] syscall_common+0x34/0x58
+[   24.296372]
+[   24.298096] ---[ end trace fd3ac44449b218ab ]---
+
+Fix: 8399a29df92d68 ("mkfs.f2fs: give random checkpoint version")
+Reported-And-Tested-by: Stijn Tintel <stijn at linux-ipv6.be>
+Signed-off-by: Jaegeuk Kim <jaegeuk at kernel.org>
+---
+ mkfs/f2fs_format.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/mkfs/f2fs_format.c b/mkfs/f2fs_format.c
+index 92876b8..b379e80 100644
+--- a/mkfs/f2fs_format.c
++++ b/mkfs/f2fs_format.c
+@@ -546,7 +546,7 @@ static int f2fs_write_check_point_pack(void)
+ 	}
+ 
+ 	/* 1. cp page 1 of checkpoint pack 1 */
+-	cp->checkpoint_ver = rand() | 0x1;
++	cp->checkpoint_ver = cpu_to_le64(rand() | 0x1);
+ 	set_cp(cur_node_segno[0], c.cur_seg[CURSEG_HOT_NODE]);
+ 	set_cp(cur_node_segno[1], c.cur_seg[CURSEG_WARM_NODE]);
+ 	set_cp(cur_node_segno[2], c.cur_seg[CURSEG_COLD_NODE]);
+-- 
+2.13.5
+