f2fs: move grabing orphan pages out of protection region

Move grabing orphan block page out of protection region, and grab all
the orphan block pages ahead.

Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Reviewed-by: Chao Yu <chao2.yu@samsung.com>
[Jaegeuk Kim: remove unnecessary code pointed by Chao Yu]
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

1 files changed, 9 insertions, 7 deletions

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 0d78bbe79f98..fdc5a12c0edd 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -303,22 +303,25 @@ static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)
 {
         struct list_head *head;
         struct f2fs_orphan_block *orphan_blk = NULL;
-        struct page *page = NULL;
         unsigned int nentries = 0;
-        unsigned short index = 1;
-        unsigned short orphan_blocks;
+        unsigned short index;
+        unsigned short orphan_blocks = (unsigned short)((sbi->n_orphans +
+                (F2FS_ORPHANS_PER_BLOCK - 1)) / F2FS_ORPHANS_PER_BLOCK);
+        struct page *page = NULL;
+        struct page *pages[orphan_blocks];
         struct orphan_inode_entry *orphan = NULL;
 
-        orphan_blocks = (unsigned short)((sbi->n_orphans +
-                (F2FS_ORPHANS_PER_BLOCK - 1)) / F2FS_ORPHANS_PER_BLOCK);
+        for (index = 0; index < orphan_blocks; index++)
+                pages[index] = grab_meta_page(sbi, start_blk + index);
 
+        index = 1;
         mutex_lock(&sbi->orphan_inode_mutex);
         head = &sbi->orphan_inode_list;
 
         /* loop for each orphan inode entry and write them in Jornal block */
         list_for_each_entry(orphan, head, list) {
                 if (!page) {
-                        page = grab_meta_page(sbi, start_blk);
+                        page = pages[index - 1];
                         orphan_blk =
                                 (struct f2fs_orphan_block *)page_address(page);
                         memset(orphan_blk, 0, sizeof(*orphan_blk));
@@ -338,7 +341,6 @@ static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk)
                         set_page_dirty(page);
                         f2fs_put_page(page, 1);
                         index++;
-                        start_blk++;
                         nentries = 0;
                         page = NULL;
                 }