Hi Hu,
I've been rethinking about whole this issue differently.
And, now I'm starting to test with the below patch instead of previous one.
Thanks,
Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
---
fs/f2fs/checkpoint.c | 19 +++++++++++++++++++
fs/f2fs/data.c | 4 ++++
fs/f2fs/f2fs.h | 1 +
fs/f2fs/super.c | 15 ---------------
4 files changed, 24 insertions(+), 15 deletions(-)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 7b7a9d8..74875fb 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -378,6 +378,20 @@ static void __remove_ino_entry(struct f2fs_sb_info *sbi,
nid_t ino, int type)
spin_unlock(&im->ino_lock);
}
+static bool __exist_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type)
+{
+ struct inode_management *im = &sbi->im[type];
+ struct ino_entry *e;
+ bool exist = false;
+
+ spin_lock(&im->ino_lock);
+ e = radix_tree_lookup(&im->ino_root, ino);
+ if (e)
+ exist = true;
+ spin_unlock(&im->ino_lock);
+ return exist;
+}
+
void add_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type)
{
/* add new dirty ino entry into list */
@@ -458,6 +472,11 @@ void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t
ino)
__remove_ino_entry(sbi, ino, ORPHAN_INO);
}
+bool is_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
+{
+ return __exist_ino_entry(sbi, ino, ORPHAN_INO);
+}
+
static void recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
{
struct inode *inode = f2fs_iget(sbi->sb, ino);
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index b0cc2aa..1988f5f 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1749,6 +1749,10 @@ write:
goto out;
}
+ /* if orphan inode, we don't need to write its data */
+ if (is_orphan_inode(sbi, inode->i_ino))
+ goto out;
+
if (!wbc->for_reclaim)
need_balance_fs = true;
else if (has_not_enough_free_secs(sbi, 0))
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 8f1f21a..697346a 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1726,6 +1726,7 @@ int acquire_orphan_inode(struct f2fs_sb_info *);
void release_orphan_inode(struct f2fs_sb_info *);
void add_orphan_inode(struct f2fs_sb_info *, nid_t);
void remove_orphan_inode(struct f2fs_sb_info *, nid_t);
+bool is_orphan_inode(struct f2fs_sb_info *, nid_t);
void recover_orphan_inodes(struct f2fs_sb_info *);
int get_valid_checkpoint(struct f2fs_sb_info *);
void update_dirty_page(struct inode *, struct page *);
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 19438f2..1d0973a 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -422,20 +422,6 @@ static struct inode *f2fs_alloc_inode(struct super_block
*sb)
return &fi->vfs_inode;
}
-static int f2fs_drop_inode(struct inode *inode)
-{
- /*
- * This is to avoid a deadlock condition like below.
- * writeback_single_inode(inode)
- * - f2fs_write_data_page
- * - f2fs_gc -> iput -> evict
- * - inode_wait_for_writeback(inode)
- */
- if (!inode_unhashed(inode) && inode->i_state & I_SYNC)
- return 0;
- return generic_drop_inode(inode);
-}
-
/*
* f2fs_dirty_inode() is called from __mark_inode_dirty()
*
@@ -759,7 +745,6 @@ restore_opts:
static struct super_operations f2fs_sops = {
.alloc_inode = f2fs_alloc_inode,
- .drop_inode = f2fs_drop_inode,
.destroy_inode = f2fs_destroy_inode,
.write_inode = f2fs_write_inode,
.dirty_inode = f2fs_dirty_inode,
--
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