The commit is pushed to "branch-rh9-5.14.0-427.44.1.vz9.104.x-ovz" and will
appear at g...@bitbucket.org:openvz/vzkernel.git
after rh9-5.14.0-427.44.1.vz9.104.1
------>
commit 393bbd9e658a73789312b3ad2e9622697f2a863e
Author: Maxim V. Patlasov <mpatla...@parallels.com>
Date: Tue Oct 5 18:42:36 2021 +0300
ext4: Teach statfs to report reduced disk usage
The magic 9 in there came from 512 bytes - the i_blocks is accounted
in these units in any case.
(cherry picked from vz7 commit 4b10f27018d330d9e03e932a98a41a3e55da81fb)
Signed-off-by: Konstantin Khorenko <khore...@virtuozzo.com>
Signed-off-by: Kirill Tkhai <ktk...@virtuozzo.com>
Feature: fs/ext4: fast online shrink support
---
fs/ext4/super.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index c5aef54cc07b..f93fd231a459 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -6867,6 +6867,22 @@ static int ext4_statfs(struct dentry *dentry, struct
kstatfs *buf)
sb_has_quota_limits_enabled(sb, PRJQUOTA))
ext4_statfs_project(sb, EXT4_I(dentry->d_inode)->i_projid, buf);
#endif
+
+ if (sbi->s_balloon_ino) {
+ struct ext4_inode_info *ei;
+ blkcnt_t balloon_blocks;
+
+ balloon_blocks = sbi->s_balloon_ino->i_blocks;
+ ei = EXT4_I(sbi->s_balloon_ino);
+ spin_lock(&ei->i_block_reservation_lock);
+ balloon_blocks += ei->i_reserved_data_blocks;
+ spin_unlock(&ei->i_block_reservation_lock);
+
+ BUG_ON(sbi->s_balloon_ino->i_blkbits < 9);
+ buf->f_blocks -= balloon_blocks >>
+ (sbi->s_balloon_ino->i_blkbits - 9);
+ }
+
return 0;
}
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