This is a note to let you know that I've just added the patch titled
f2fs: apply zone capacity to all zone type
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
f2fs-apply-zone-capacity-to-all-zone-type.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 84f67eb6521055c389f7584406345de5ec810b8b
Author: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Date: Tue Mar 21 15:58:04 2023 -0700
f2fs: apply zone capacity to all zone type
[ Upstream commit 0b37ed21e3367539b79284e0b0af2246ffcf0dca ]
If we manage the zone capacity per zone type, it'll break the GC assumption.
And, the current logic complains valid block count mismatch.
Let's apply zone capacity to all zone type, if specified.
Fixes: de881df97768 ("f2fs: support zone capacity less than zone size")
Reviewed-by: Chao Yu <chao@xxxxxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 880447750caf4..79ad696cddec0 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -5053,48 +5053,6 @@ int f2fs_check_write_pointer(struct f2fs_sb_info *sbi)
return 0;
}
-static bool is_conv_zone(struct f2fs_sb_info *sbi, unsigned int zone_idx,
- unsigned int dev_idx)
-{
- if (!bdev_is_zoned(FDEV(dev_idx).bdev))
- return true;
- return !test_bit(zone_idx, FDEV(dev_idx).blkz_seq);
-}
-
-/* Return the zone index in the given device */
-static unsigned int get_zone_idx(struct f2fs_sb_info *sbi, unsigned int secno,
- int dev_idx)
-{
- block_t sec_start_blkaddr = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, secno));
-
- return (sec_start_blkaddr - FDEV(dev_idx).start_blk) >>
- sbi->log_blocks_per_blkz;
-}
-
-/*
- * Return the usable segments in a section based on the zone's
- * corresponding zone capacity. Zone is equal to a section.
- */
-static inline unsigned int f2fs_usable_zone_segs_in_sec(
- struct f2fs_sb_info *sbi, unsigned int segno)
-{
- unsigned int dev_idx, zone_idx;
-
- dev_idx = f2fs_target_device_index(sbi, START_BLOCK(sbi, segno));
- zone_idx = get_zone_idx(sbi, GET_SEC_FROM_SEG(sbi, segno), dev_idx);
-
- /* Conventional zone's capacity is always equal to zone size */
- if (is_conv_zone(sbi, zone_idx, dev_idx))
- return sbi->segs_per_sec;
-
- if (!sbi->unusable_blocks_per_sec)
- return sbi->segs_per_sec;
-
- /* Get the segment count beyond zone capacity block */
- return sbi->segs_per_sec - (sbi->unusable_blocks_per_sec >>
- sbi->log_blocks_per_seg);
-}
-
/*
* Return the number of usable blocks in a segment. The number of blocks
* returned is always equal to the number of blocks in a segment for
@@ -5107,23 +5065,13 @@ static inline unsigned int f2fs_usable_zone_blks_in_seg(
struct f2fs_sb_info *sbi, unsigned int segno)
{
block_t seg_start, sec_start_blkaddr, sec_cap_blkaddr;
- unsigned int zone_idx, dev_idx, secno;
-
- secno = GET_SEC_FROM_SEG(sbi, segno);
- seg_start = START_BLOCK(sbi, segno);
- dev_idx = f2fs_target_device_index(sbi, seg_start);
- zone_idx = get_zone_idx(sbi, secno, dev_idx);
-
- /*
- * Conventional zone's capacity is always equal to zone size,
- * so, blocks per segment is unchanged.
- */
- if (is_conv_zone(sbi, zone_idx, dev_idx))
- return sbi->blocks_per_seg;
+ unsigned int secno;
if (!sbi->unusable_blocks_per_sec)
return sbi->blocks_per_seg;
+ secno = GET_SEC_FROM_SEG(sbi, segno);
+ seg_start = START_BLOCK(sbi, segno);
sec_start_blkaddr = START_BLOCK(sbi, GET_SEG_FROM_SEC(sbi, secno));
sec_cap_blkaddr = sec_start_blkaddr + CAP_BLKS_PER_SEC(sbi);
@@ -5157,11 +5105,6 @@ static inline unsigned int f2fs_usable_zone_blks_in_seg(struct f2fs_sb_info *sbi
return 0;
}
-static inline unsigned int f2fs_usable_zone_segs_in_sec(struct f2fs_sb_info *sbi,
- unsigned int segno)
-{
- return 0;
-}
#endif
unsigned int f2fs_usable_blks_in_seg(struct f2fs_sb_info *sbi,
unsigned int segno)
@@ -5176,7 +5119,7 @@ unsigned int f2fs_usable_segs_in_sec(struct f2fs_sb_info *sbi,
unsigned int segno)
{
if (f2fs_sb_has_blkzoned(sbi))
- return f2fs_usable_zone_segs_in_sec(sbi, segno);
+ return CAP_SEGS_PER_SEC(sbi);
return sbi->segs_per_sec;
}
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index 9eb8364ac38c7..04f448ddf49ea 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -104,6 +104,9 @@ static inline void sanity_check_seg_type(struct f2fs_sb_info *sbi,
#define CAP_BLKS_PER_SEC(sbi) \
((sbi)->segs_per_sec * (sbi)->blocks_per_seg - \
(sbi)->unusable_blocks_per_sec)
+#define CAP_SEGS_PER_SEC(sbi) \
+ ((sbi)->segs_per_sec - ((sbi)->unusable_blocks_per_sec >>\
+ (sbi)->log_blocks_per_seg))
#define GET_SEC_FROM_SEG(sbi, segno) \
(((segno) == -1) ? -1: (segno) / (sbi)->segs_per_sec)
#define GET_SEG_FROM_SEC(sbi, secno) \
