From: Shin'ichiro Kawasaki shinichiro.kawasaki@wdc.com
commit 059c01039c0185dbee7ed080f1f2bd22cb1e4dab upstream.
Per ZBC/ZAC/ZNS specifications, write pointers may not have valid values when zones are in full condition. However, when zonefs mounts a zoned block device, zonefs refers write pointers to set file size even when the zones are in full condition. This results in wrong file size. To fix this, refer maximum file size in place of write pointers for zones in full condition.
Signed-off-by: Shin'ichiro Kawasaki shinichiro.kawasaki@wdc.com Fixes: 8dcc1a9d90c1 ("fs: New zonefs file system") Cc: stable@vger.kernel.org # 5.6+ Signed-off-by: Damien Le Moal damien.lemoal@wdc.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/zonefs/super.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/fs/zonefs/super.c +++ b/fs/zonefs/super.c @@ -250,6 +250,9 @@ static loff_t zonefs_check_zone_conditio } inode->i_mode &= ~0222; return i_size_read(inode); + case BLK_ZONE_COND_FULL: + /* The write pointer of full zones is invalid. */ + return zi->i_max_size; default: if (zi->i_ztype == ZONEFS_ZTYPE_CNV) return zi->i_max_size;