From 834c7ec6af441a3630fc60d72522e06dc65003eb Mon Sep 17 00:00:00 2001 From: Shin'ichiro Kawasaki Date: Wed, 17 Feb 2021 18:58:11 +0900 Subject: [PATCH] zonefs: Fix file size of zones in full condition 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 Fixes: 8dcc1a9d90c1 ("fs: New zonefs file system") Cc: # 5.6+ Signed-off-by: Damien Le Moal Signed-off-by: Greg Kroah-Hartman --- fs/zonefs/super.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c index bec47f2d074b..3fe933b1010c 100644 --- a/fs/zonefs/super.c +++ b/fs/zonefs/super.c @@ -250,6 +250,9 @@ static loff_t zonefs_check_zone_condition(struct inode *inode, } 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;