f2fs: trace old block address for CoWed page

This patch enables to trace old block address of CoWed page for better
debugging.

f2fs_submit_page_mbio: dev = (1,0), ino = 1, page_index = 0x1d4f0, oldaddr = 0xfe8ab, newaddr = 0xfee90 rw = WRITE_SYNC, type = NODE
f2fs_submit_page_mbio: dev = (1,0), ino = 1, page_index = 0x1d4f8, oldaddr = 0xfe8b0, newaddr = 0xfee91 rw = WRITE_SYNC, type = NODE
f2fs_submit_page_mbio: dev = (1,0), ino = 1, page_index = 0x1d4fa, oldaddr = 0xfe8ae, newaddr = 0xfee92 rw = WRITE_SYNC, type = NODE

f2fs_submit_page_mbio: dev = (1,0), ino = 134824, page_index = 0x96, oldaddr = 0xf049b, newaddr = 0x2bbe rw = WRITE, type = DATA
f2fs_submit_page_mbio: dev = (1,0), ino = 134824, page_index = 0x97, oldaddr = 0xf049c, newaddr = 0x2bbf rw = WRITE, type = DATA
f2fs_submit_page_mbio: dev = (1,0), ino = 134824, page_index = 0x98, oldaddr = 0xf049d, newaddr = 0x2bc0 rw = WRITE, type = DATA

f2fs_submit_page_mbio: dev = (1,0), ino = 135260, page_index = 0x47, oldaddr = 0xffffffff, newaddr = 0xf2631 rw = WRITE, type = DATA
f2fs_submit_page_mbio: dev = (1,0), ino = 135260, page_index = 0x48, oldaddr = 0xffffffff, newaddr = 0xf2632 rw = WRITE, type = DATA
f2fs_submit_page_mbio: dev = (1,0), ino = 135260, page_index = 0x49, oldaddr = 0xffffffff, newaddr = 0xf2633 rw = WRITE, type = DATA

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

1 files changed, 6 insertions, 4 deletions

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 5d0e6e6f3af7..d8e13b0d4966 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1385,8 +1385,8 @@ static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio)
 {
         int type = __get_segment_type(fio->page, fio->type);
 
-        allocate_data_block(fio->sbi, fio->page, fio->blk_addr,
-                                        &fio->blk_addr, sum, type);
+        allocate_data_block(fio->sbi, fio->page, fio->old_blkaddr,
+                                        &fio->new_blkaddr, sum, type);
 
         /* writeout dirty page into bdev */
         f2fs_submit_page_mbio(fio);
@@ -1398,7 +1398,8 @@ void write_meta_page(struct f2fs_sb_info *sbi, struct page *page)
                 .sbi = sbi,
                 .type = META,
                 .rw = WRITE_SYNC | REQ_META | REQ_PRIO,
-                .blk_addr = page->index,
+                .old_blkaddr = page->index,
+                .new_blkaddr = page->index,
                 .page = page,
                 .encrypted_page = NULL,
         };
@@ -1428,11 +1429,12 @@ void write_data_page(struct dnode_of_data *dn, struct f2fs_io_info *fio)
         get_node_info(sbi, dn->nid, &ni);
         set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version);
         do_write_page(&sum, fio);
-        dn->data_blkaddr = fio->blk_addr;
+        dn->data_blkaddr = fio->new_blkaddr;
 }
 
 void rewrite_data_page(struct f2fs_io_info *fio)
 {
+        fio->new_blkaddr = fio->old_blkaddr;
         stat_inc_inplace_blocks(fio->sbi);
         f2fs_submit_page_mbio(fio);
 }