On 2024/1/26 0:25, Daeho Jeong wrote:
On Wed, Jan 24, 2024 at 7:34 PM Chao Yu <c...@kernel.org> wrote:
+Cc Yongpeng Yang
Daeho,
Yongpeng reports a potential issue: if c.devices[0].total_segments is
larger than segments of mainarea, c.cur_seg[CURSEG_HOT_NODE] will exceed
end boundary of mainarea. Could you please check that? though it's a corner
case.
Can you elaborate more?
Since c.cur_seg[CURSEG_HOT_NODE] is an offset started from main_blkaddr.
If c.cur_seg[CURSEG_HOT_NODE] was assigned w/ c.devices[0].total_segments,
and c.devices[0].total_segments is larger than segments of mainare,
c.cur_seg[CURSEG_HOT_NODE] will exceed the end boundary of mainarea.
c.cur_seg[CURSEG_HOT_NODE] = c.zoned_model == F2FS_ZONED_HM ?
c.devices[0].total_segments : 0;
In the case of F2FS_ZONED_HM, we have the devices[1].
Do you mean the case we format the filesystem intentionally smaller
than what devices have?
I mean blew case:
device[0]: conventional device size = 10240 MB
device[1]: zone device size = 2 MB
Thanks,
On 2024/1/18 7:00, Daeho Jeong wrote:
From: Daeho Jeong <daehoje...@google.com>
Make to allocate logs after conventional area for HM zoned devices to
spare them for file pinning support.
Signed-off-by: Daeho Jeong <daehoje...@google.com>
---
mkfs/f2fs_format.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/mkfs/f2fs_format.c b/mkfs/f2fs_format.c
index f2840c8..91a7f4b 100644
--- a/mkfs/f2fs_format.c
+++ b/mkfs/f2fs_format.c
@@ -557,7 +557,8 @@ static int f2fs_prepare_super_block(void)
c.cur_seg[CURSEG_COLD_DATA] = 0;
c.cur_seg[CURSEG_WARM_DATA] = next_zone(CURSEG_COLD_DATA);
} else if (c.zoned_mode) {
- c.cur_seg[CURSEG_HOT_NODE] = 0;
+ c.cur_seg[CURSEG_HOT_NODE] = c.zoned_model == F2FS_ZONED_HM ?
+ c.devices[0].total_segments : 0;
c.cur_seg[CURSEG_WARM_NODE] = next_zone(CURSEG_HOT_NODE);
c.cur_seg[CURSEG_COLD_NODE] = next_zone(CURSEG_WARM_NODE);
c.cur_seg[CURSEG_HOT_DATA] = next_zone(CURSEG_COLD_NODE);
_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
