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* [PATCH] ext4: Actually request zeroing of inode table after grow
@ 2019-04-22  8:23 Kirill Tkhai
  2019-04-25 17:23 ` Theodore Ts'o
  0 siblings, 1 reply; 2+ messages in thread
From: Kirill Tkhai @ 2019-04-22  8:23 UTC (permalink / raw)
  To: tytso, jack, adilger.kernel, ktkhai, linux-ext4

It is never possible, that number of block groups decreases,
since only online grow is supported.

But after a growing occured, we have to zero inode tables
for just created new block groups.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Reviewed-by: Jan Kara <jack@suse.cz>
---
 fs/ext4/ioctl.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index bab3da4f1e0d..20faa6a69238 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -978,7 +978,7 @@ long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 		if (err == 0)
 			err = err2;
 		mnt_drop_write_file(filp);
-		if (!err && (o_group > EXT4_SB(sb)->s_groups_count) &&
+		if (!err && (o_group < EXT4_SB(sb)->s_groups_count) &&
 		    ext4_has_group_desc_csum(sb) &&
 		    test_opt(sb, INIT_INODE_TABLE))
 			err = ext4_register_li_request(sb, o_group);


^ permalink raw reply related	[flat|nested] 2+ messages in thread

* Re: [PATCH] ext4: Actually request zeroing of inode table after grow
  2019-04-22  8:23 [PATCH] ext4: Actually request zeroing of inode table after grow Kirill Tkhai
@ 2019-04-25 17:23 ` Theodore Ts'o
  0 siblings, 0 replies; 2+ messages in thread
From: Theodore Ts'o @ 2019-04-25 17:23 UTC (permalink / raw)
  To: Kirill Tkhai; +Cc: jack, adilger.kernel, linux-ext4

On Mon, Apr 22, 2019 at 11:23:20AM +0300, Kirill Tkhai wrote:
> It is never possible, that number of block groups decreases,
> since only online grow is supported.
> 
> But after a growing occured, we have to zero inode tables
> for just created new block groups.
> 
> Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
> Reviewed-by: Jan Kara <jack@suse.cz>

Applied, thanks.

				- Ted

^ permalink raw reply	[flat|nested] 2+ messages in thread

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2019-04-22  8:23 [PATCH] ext4: Actually request zeroing of inode table after grow Kirill Tkhai
2019-04-25 17:23 ` Theodore Ts'o

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