linux-kernel - [PATCH] f2fs: turn back remapped address in compressed page endio

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Message-Id: <20210727072100.2246422-1-daeho43@gmail.com>
Date:   Tue, 27 Jul 2021 00:21:00 -0700
From:   Daeho Jeong <daeho43@...il.com>
To:     linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net, kernel-team@...roid.com
Cc:     Daeho Jeong <daehojeong@...gle.com>,
        Youngjin Gil <youngjin.gil@...sung.com>,
        Hyeong Jun Kim <hj514.kim@...sung.com>
Subject: [PATCH] f2fs: turn back remapped address in compressed page endio

From: Daeho Jeong <daehojeong@...gle.com>

Turned back the remmaped sector address to the address in the partition,
when ending io, for compress cache to work properly.

Fixes: 6ce19aff0b8c ("f2fs: compress: add compress_inode to cache
compressed blocks")
Signed-off-by: Daeho Jeong <daehojeong@...gle.com>
Signed-off-by: Youngjin Gil <youngjin.gil@...sung.com>
Signed-off-by: Hyeong Jun Kim <hj514.kim@...sung.com>
---
 fs/f2fs/data.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 1a716c3b5457..53e71e1bb673 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -228,7 +228,13 @@ static void f2fs_handle_step_decompress(struct bio_post_read_ctx *ctx)
 	struct bio_vec *bv;
 	struct bvec_iter_all iter_all;
 	bool all_compressed = true;
-	block_t blkaddr = SECTOR_TO_BLOCK(ctx->bio->bi_iter.bi_sector);
+	sector_t sector = ctx->bio->bi_iter.bi_sector;
+	block_t blkaddr;
+
+	if (bio_flagged(ctx->bio, BIO_REMAPPED))
+		sector -= ctx->bio->bi_bdev->bd_start_sect;
+
+	blkaddr = SECTOR_TO_BLOCK(sector);
 
 	bio_for_each_segment_all(bv, ctx->bio, iter_all) {
 		struct page *page = bv->bv_page;
-- 
2.32.0.432.gabb21c7263-goog