f2fs: init local extent_info to avoid stale stack info in tp

To avoid such stale(fops, blk, len) info in f2fs_lookup_extent_tree_end tp

dio-23095 [005] ...1 17878.856859: f2fs_lookup_extent_tree_end:
			dev = (259,30), ino = 856, pgofs = 0,
			ext_info(fofs: 3441207040, blk: 4294967232, len: 3481143808)

Signed-off-by: Hou Pengyang <houpengyang@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

2 files changed, 5 insertions, 5 deletions

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 5f3bc98a387d..f72493d8c8e4 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -511,7 +511,7 @@ int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index)
 
 int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index)
 {
-        struct extent_info ei;
+        struct extent_info ei  = {0,0,0};
         struct inode *inode = dn->inode;
 
         if (f2fs_lookup_extent_cache(inode, index, &ei)) {
@@ -528,7 +528,7 @@ struct page *get_read_data_page(struct inode *inode, pgoff_t index,
         struct address_space *mapping = inode->i_mapping;
         struct dnode_of_data dn;
         struct page *page;
-        struct extent_info ei;
+        struct extent_info ei = {0,0,0};
         int err;
         struct f2fs_io_info fio = {
                 .sbi = F2FS_I_SB(inode),
@@ -803,7 +803,7 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
         int err = 0, ofs = 1;
         unsigned int ofs_in_node, last_ofs_in_node;
         blkcnt_t prealloc;
-        struct extent_info ei;
+        struct extent_info ei = {0,0,0};
         block_t blkaddr;
 
         if (!maxblocks)
@@ -1667,7 +1667,7 @@ static int prepare_write_begin(struct f2fs_sb_info *sbi,
         struct dnode_of_data dn;
         struct page *ipage;
         bool locked = false;
-        struct extent_info ei;
+        struct extent_info ei = {0,0,0};
         int err = 0;
 
         /*
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 120164815030..36c156557bb1 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1877,7 +1877,7 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
 {
         struct inode *inode = file_inode(filp);
         struct f2fs_map_blocks map = { .m_next_pgofs = NULL };
-        struct extent_info ei;
+        struct extent_info ei = {0,0,0};
         pgoff_t pg_start, pg_end;
         unsigned int blk_per_seg = sbi->blocks_per_seg;
         unsigned int total = 0, sec_num;