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f2fs: avoid to calculate incorrect max orphan number

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Because we will write node summaries when do_checkpoint with umount flag,
our number of max orphan blocks should minus NR_CURSEG_NODE_TYPE additional.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Shu Tan <shu.tan@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Chao Yu 2013-11-29 16:37:00 +08:00 committed by Jaegeuk Kim
parent a66c7b2fcf
commit 6947eea957
1 changed files with 4 additions and 3 deletions
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7
fs/f2fs/checkpoint.c
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@ -190,12 +190,13 @@ int acquire_orphan_inode(struct f2fs_sb_info *sbi)
int err = 0;
/*
* considering 512 blocks in a segment 5 blocks are needed for cp
* 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*507 orphan entries
* for cp pack we can have max 1020*504 orphan entries
*/
max_orphans = (sbi->blocks_per_seg - 5) * F2FS_ORPHANS_PER_BLOCK;
max_orphans = (sbi->blocks_per_seg - 2 - NR_CURSEG_TYPE)
* F2FS_ORPHANS_PER_BLOCK;
mutex_lock(&sbi->orphan_inode_mutex);
if (sbi->n_orphans >= max_orphans)
err = -ENOSPC;