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Date: Fri, 25 Jul 2014 15:47:16 -0700
From: Jaegeuk Kim <jaegeuk@...nel.org>
To: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net
Cc: Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH 02/11] f2fs: punch the core function for inode management
This patch punches out the core functions to manage the inode numbers.
Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
---
fs/f2fs/checkpoint.c | 81 ++++++++++++++++++++++++++++------------------------
1 file changed, 44 insertions(+), 37 deletions(-)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 0b4710c..3e3c2c3 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -282,6 +282,47 @@ const struct address_space_operations f2fs_meta_aops = {
.set_page_dirty = f2fs_set_meta_page_dirty,
};
+static void __add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino)
+{
+ struct list_head *head;
+ struct ino_entry *new, *e;
+
+ new = f2fs_kmem_cache_alloc(orphan_entry_slab, GFP_ATOMIC);
+ new->ino = ino;
+
+ spin_lock(&sbi->orphan_inode_lock);
+ list_for_each_entry(e, &sbi->orphan_inode_list, list) {
+ if (e->ino == ino) {
+ spin_unlock(&sbi->orphan_inode_lock);
+ kmem_cache_free(orphan_entry_slab, new);
+ return;
+ }
+ if (e->ino > ino)
+ break;
+ }
+
+ /* add new entry into list which is sorted by inode number */
+ list_add_tail(&new->list, &e->list);
+ spin_unlock(&sbi->orphan_inode_lock);
+}
+
+static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino)
+{
+ struct ino_entry *e;
+
+ spin_lock(&sbi->orphan_inode_lock);
+ list_for_each_entry(e, &sbi->orphan_inode_list, list) {
+ if (e->ino == ino) {
+ list_del(&e->list);
+ sbi->n_orphans--;
+ spin_unlock(&sbi->orphan_inode_lock);
+ kmem_cache_free(orphan_entry_slab, e);
+ return;
+ }
+ }
+ spin_unlock(&sbi->orphan_inode_lock);
+}
+
int acquire_orphan_inode(struct f2fs_sb_info *sbi)
{
int err = 0;
@@ -306,48 +347,14 @@ void release_orphan_inode(struct f2fs_sb_info *sbi)
void add_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
{
- struct list_head *head;
- struct orphan_inode_entry *new, *orphan;
-
- new = f2fs_kmem_cache_alloc(orphan_entry_slab, GFP_ATOMIC);
- new->ino = ino;
-
- spin_lock(&sbi->orphan_inode_lock);
- head = &sbi->orphan_inode_list;
- list_for_each_entry(orphan, head, list) {
- if (orphan->ino == ino) {
- spin_unlock(&sbi->orphan_inode_lock);
- kmem_cache_free(orphan_entry_slab, new);
- return;
- }
-
- if (orphan->ino > ino)
- break;
- }
-
/* add new orphan entry into list which is sorted by inode number */
- list_add_tail(&new->list, &orphan->list);
- spin_unlock(&sbi->orphan_inode_lock);
+ __add_ino_entry(sbi, ino);
}
void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
{
- struct list_head *head;
- struct orphan_inode_entry *orphan;
-
- spin_lock(&sbi->orphan_inode_lock);
- head = &sbi->orphan_inode_list;
- list_for_each_entry(orphan, head, list) {
- if (orphan->ino == ino) {
- list_del(&orphan->list);
- f2fs_bug_on(sbi->n_orphans == 0);
- sbi->n_orphans--;
- spin_unlock(&sbi->orphan_inode_lock);
- kmem_cache_free(orphan_entry_slab, orphan);
- return;
- }
- }
- spin_unlock(&sbi->orphan_inode_lock);
+ /* remove orphan entry from orphan list */
+ __remove_ino_entry(sbi, ino);
}
static void recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
--
1.8.5.2 (Apple Git-48)
--
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