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Subject[PATCH v2 1/1] f2fs: update multi-dev metadata in resize_fs
Date
From: Qiuyang Sun <sunqiuyang@huawei.com>

Multi-device metadata should be updated in resize_fs as well.

Also, we check that the new FS size still reaches the last device.

--
Changelog v1 => v2:
Use f2fs_is_multi_device() and some minor cleanup.

Signed-off-by: Qiuyang Sun <sunqiuyang@huawei.com>
---
fs/f2fs/gc.c | 34 ++++++++++++++++++++++++++++++++--
1 file changed, 32 insertions(+), 2 deletions(-)

diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 5877bd7..ef7686a 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1437,11 +1437,20 @@ static void update_sb_metadata(struct f2fs_sb_info *sbi, int secs)
raw_sb->segment_count_main = cpu_to_le32(segment_count_main + segs);
raw_sb->block_count = cpu_to_le64(block_count +
(long long)segs * sbi->blocks_per_seg);
+ if (f2fs_is_multi_device(sbi)) {
+ int last_dev = sbi->s_ndevs - 1;
+ int dev_segs =
+ le32_to_cpu(raw_sb->devs[last_dev].total_segments);
+
+ raw_sb->devs[last_dev].total_segments =
+ cpu_to_le32(dev_segs + segs);
+ }
}

static void update_fs_metadata(struct f2fs_sb_info *sbi, int secs)
{
int segs = secs * sbi->segs_per_sec;
+ long long blks = (long long)segs * sbi->blocks_per_seg;
long long user_block_count =
le64_to_cpu(F2FS_CKPT(sbi)->user_block_count);

@@ -1449,8 +1458,20 @@ static void update_fs_metadata(struct f2fs_sb_info *sbi, int secs)
MAIN_SEGS(sbi) = (int)MAIN_SEGS(sbi) + segs;
FREE_I(sbi)->free_sections = (int)FREE_I(sbi)->free_sections + secs;
FREE_I(sbi)->free_segments = (int)FREE_I(sbi)->free_segments + segs;
- F2FS_CKPT(sbi)->user_block_count = cpu_to_le64(user_block_count +
- (long long)segs * sbi->blocks_per_seg);
+ F2FS_CKPT(sbi)->user_block_count = cpu_to_le64(user_block_count + blks);
+
+ if (f2fs_is_multi_device(sbi)) {
+ int last_dev = sbi->s_ndevs - 1;
+
+ FDEV(last_dev).total_segments =
+ (int)FDEV(last_dev).total_segments + segs;
+ FDEV(last_dev).end_blk =
+ (long long)FDEV(last_dev).end_blk + blks;
+#ifdef CONFIG_BLK_DEV_ZONED
+ FDEV(last_dev).nr_blkz = (int)FDEV(last_dev).nr_blkz +
+ (int)(blks >> sbi->log_blocks_per_blkz);
+#endif
+ }
}

int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count)
@@ -1465,6 +1486,15 @@ int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count)
if (block_count > old_block_count)
return -EINVAL;

+ if (f2fs_is_multi_device(sbi)) {
+ int last_dev = sbi->s_ndevs - 1;
+ __u64 last_segs = FDEV(last_dev).total_segments;
+
+ if (block_count + last_segs * sbi->blocks_per_seg <=
+ old_block_count)
+ return -EINVAL;
+ }
+
/* new fs size should align to section size */
div_u64_rem(block_count, BLKS_PER_SEC(sbi), &rem);
if (rem)
--
1.8.3.1
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