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Subject[PATCH 3/3] f2fs: assign allocation hint for warm/cold data
Date
This patch gives slower device region to warm/cold data area more eagerly.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
fs/f2fs/gc.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index d988c1aaf132..eb1846a80da3 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1028,4 +1028,9 @@ void build_gc_manager(struct f2fs_sb_info *sbi)

sbi->fggc_threshold = div64_u64((main_count - ovp_count) *
BLKS_PER_SEC(sbi), (main_count - resv_count));
+
+ /* give warm/cold data area from slower device */
+ if (sbi->s_ndevs)
+ sbi->last_victim[ALLOC_NEXT] =
+ GET_SEGNO(sbi, FDEV(0).end_blk) + 1;
}
--
2.11.0
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