f2fs-tools: fix resize.f2fs (#9800)

resolve issue
- https://github.com/openwrt/openwrt/issues/9800
add the upstream patch:
- f2fs-tools.git/patch/?id=f056fbeff08d30a6d9acdb9e06704461ceee3500

Signed-off-by: Kerma Gérald <gandalf@gk2.net>
(cherry picked from commit 1aac1b36d3cf44c8bfa8d4a6d8df6e815fc06529)

2 files changed, 47 insertions, 1 deletions

diff --git a/package/utils/f2fs-tools/Makefile b/package/utils/f2fs-tools/Makefile
index 44ab63c403..3c53f27d79 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:=1.14.0
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs-tools.git/snapshot/
diff --git a/package/utils/f2fs-tools/patches/200-resize_f2fs-fix_wrong_ovp_calculation.patch b/package/utils/f2fs-tools/patches/200-resize_f2fs-fix_wrong_ovp_calculation.patch
new file mode 100644
index 0000000000..0b433f76c4
--- /dev/null
+++ b/package/utils/f2fs-tools/patches/200-resize_f2fs-fix_wrong_ovp_calculation.patch
@@ -0,0 +1,46 @@
+From f056fbeff08d30a6d9acdb9e06704461ceee3500 Mon Sep 17 00:00:00 2001
+From: Jaegeuk Kim <jaegeuk@kernel.org>
+Date: Thu, 1 Apr 2021 20:13:55 -0700
+Subject: resize.f2fs: fix wrong ovp calculation
+
+beroal reported a mount failure due to broken valid_user_blocks.
+[ 6890.647749] F2FS-fs (loop0): Wrong valid_user_blocks: 16040048,
+user_block_count: 10016768
+
+From fsck,
+
+segment_count_main                      [0x    9a95 : 39573]
+-> 39573 * 2MB = 78GB as user space
+
+overprov_segment_count                  [0x    4e29 : 20009]
+-> 20009 * 2MB = 40GB as overprovisioned space which user can't see.
+
+But,
+[FSCK] valid_block_count matching with CP             [Ok..] [0xf4c070]
+-> 0xf4c070 = 16040048
+
+valid_block_count                       [0x  f4c070 : 16040048]
+-> So, this is correct.
+
+It turns out resize.f2fs gave very large and wrong overprovisioning space
+result in shortage of user blocks. The root cause was f2fs_get_usable_segments()
+didn't consider resize case which needs segment_count_main from new superblock.
+
+Fixes: f8410857b7a8 ("f2fs-tools: zns zone-capacity support")
+Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
+---
+ lib/libf2fs_zoned.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/lib/libf2fs_zoned.c
++++ b/lib/libf2fs_zoned.c
+@@ -495,6 +495,9 @@ uint32_t f2fs_get_usable_segments(struct
+ 	int i, j;
+ 	uint32_t usable_segs = 0, zone_segs;
+ 
++	if (c.func == RESIZE)
++		return get_sb(segment_count_main);
++
+ 	for (i = 0; i < c.ndevs; i++) {
+ 		if (c.devices[i].zoned_model != F2FS_ZONED_HM) {
+ 			usable_segs += c.devices[i].total_segments;