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f2fs: fix max orphan inodes calculation

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cp_payload is introduced for sit bitmap to support large volume, and it is
just after the block of f2fs_checkpoint + nat bitmap, so the first segment
should include F2FS_CP_PACKS + NR_CURSEG_TYPE + cp_payload + orphan blocks.
However, current max orphan inodes calculation don't consider cp_payload,
this patch fix it by reducing the number of cp_payload from total blocks of
the first segment when calculate max orphan inodes.

Signed-off-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Wanpeng Li 2015-02-27 17:38:13 +08:00 committed by Jaegeuk Kim
parent 2b11a74b21
commit 14b4281776
1 changed files with 7 additions and 5 deletions
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12
fs/f2fs/checkpoint.c
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@ -1104,13 +1104,15 @@ void init_ino_entry_info(struct f2fs_sb_info *sbi)
}
/*
* considering 512 blocks in a segment 8 blocks are needed for cp
* and log segment summaries. Remaining blocks are used to keep
* orphan entries with the limitation one reserved segment
* for cp pack we can have max 1020*504 orphan entries
* considering 512 blocks in a segment 8+cp_payload blocks are
* needed for cp and log segment summaries. Remaining blocks are
* used to keep orphan entries with the limitation one reserved
* segment for cp pack we can have max 1020*(504-cp_payload)
* orphan entries
*/
sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS -
NR_CURSEG_TYPE) * F2FS_ORPHANS_PER_BLOCK;
NR_CURSEG_TYPE - __cp_payload(sbi)) *
F2FS_ORPHANS_PER_BLOCK;
}
int __init create_checkpoint_caches(void)