[PATCH] zonefs: Prevent uninitialized symbol 'size' warning

[PATCH] zonefs: Prevent uninitialized symbol 'size' warning

[Damien Le Moal]

In zonefs_file_dio_append(), initialize the variable size to 0 to
prevent compilation and static code analizers warning such as:

New smatch warnings:
fs/zonefs/file.c:441 zonefs_file_dio_append() error: uninitialized
symbol 'size'.

The warning is a false positive as size is never actually used
uninitialized.

No functional change.

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Link: https://lore.kernel.org/r/202303191227.GL8Dprbi-lkp@intel.com/
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
---
 fs/zonefs/file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/zonefs/file.c b/fs/zonefs/file.c
index 738b0e28d74b..a545a6d9a32e 100644
--- a/fs/zonefs/file.c
+++ b/fs/zonefs/file.c
@@ -383,7 +383,7 @@ static ssize_t zonefs_file_dio_append(struct kiocb *iocb, struct iov_iter *from)
 	struct block_device *bdev = inode->i_sb->s_bdev;
 	unsigned int max = bdev_max_zone_append_sectors(bdev);
 	struct bio *bio;
-	ssize_t size;
+	ssize_t size = 0;
 	int nr_pages;
 	ssize_t ret;
 
-- 
2.39.2

Re: [PATCH] zonefs: Prevent uninitialized symbol 'size' warning

[Johannes Thumshirn]

Looks good,
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>