Previously, we need to calculate the max orphan num when we try to acquire an
orphan inode, but it's a stable value since the super block was inited. So
converting it to a field of f2fs_sb_info and use it directly when needed seems
a better choose.
Signed-off-by: Gu Zheng <guz.fnst@xxxxxxxxxxxxxx>
---
fs/f2fs/checkpoint.c | 20 ++++++++++----------
fs/f2fs/f2fs.h | 1 +
2 files changed, 11 insertions(+), 10 deletions(-)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 2fc3b6b..0d78bbe 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -194,23 +194,15 @@ const struct address_space_operations f2fs_meta_aops = {
int acquire_orphan_inode(struct f2fs_sb_info *sbi)
{
- unsigned int max_orphans;
int err = 0;
- /*
- * 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
- */
- max_orphans = (sbi->blocks_per_seg - 2 - NR_CURSEG_TYPE)
- * F2FS_ORPHANS_PER_BLOCK;
mutex_lock(&sbi->orphan_inode_mutex);
- if (unlikely(sbi->n_orphans >= max_orphans))
+ if (unlikely(sbi->n_orphans >= sbi->max_orphans))
err = -ENOSPC;
else
sbi->n_orphans++;
mutex_unlock(&sbi->orphan_inode_mutex);
+
return err;
}
@@ -834,6 +826,14 @@ void init_orphan_info(struct f2fs_sb_info *sbi)
mutex_init(&sbi->orphan_inode_mutex);
INIT_LIST_HEAD(&sbi->orphan_inode_list);
sbi->n_orphans = 0;
+ /*
+ * 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
+ */
+ sbi->max_orphans = (sbi->blocks_per_seg - 2 - NR_CURSEG_TYPE)
+ * F2FS_ORPHANS_PER_BLOCK;
}
int __init create_checkpoint_caches(void)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 1a06f0a..36211cb 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -414,6 +414,7 @@ struct f2fs_sb_info {
struct list_head orphan_inode_list; /* orphan inode list */
struct mutex orphan_inode_mutex; /* for orphan inode list */
unsigned int n_orphans; /* # of orphan inodes */
+ unsigned int max_orphans; /* max orphan inodes */
/* for directory inode management */
struct list_head dir_inode_list; /* dir inode list */
--
1.7.7
--
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