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| author | Gu Zheng <guz.fnst@cn.fujitsu.com> | 2013-12-26 18:24:19 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-12-26 20:37:52 +0900 |
| commit | 0d47c1adc2a1f1e4f4673f122a8328c90c58e232 (patch) | |
| tree | 21ee9e706d01f10b633036a5eea4522c509c43fc | |
| parent | 944fcfc18445b22d7ad1953a6effcfbdc4ffec74 (diff) | |
| download | blackbird-op-linux-0d47c1adc2a1f1e4f4673f122a8328c90c58e232.tar.gz blackbird-op-linux-0d47c1adc2a1f1e4f4673f122a8328c90c58e232.zip | |
f2fs: convert max_orphans to a field of f2fs_sb_info
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@cn.fujitsu.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
| -rw-r--r-- | fs/f2fs/checkpoint.c | 20 | ||||
| -rw-r--r-- | 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 2fc3b6beaeb8..0d78bbe79f98 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 1a06f0aaa7d9..36211cb16263 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 */ |
