From: Jan Kara <jack@suse.cz>
To: Theodore Ts'o <tytso@mit.edu>
Cc: Ext4 Developers List <linux-ext4@vger.kernel.org>
Subject: Re: [PATCH 09/12] ext4: fix the number of credits needed for ext4_ext_migrate()
Date: Mon, 11 Feb 2013 17:26:37 +0100 [thread overview]
Message-ID: <20130211162637.GL5318@quack.suse.cz> (raw)
In-Reply-To: <1360446832-12724-10-git-send-email-tytso@mit.edu>
On Sat 09-02-13 16:53:49, Ted Tso wrote:
> The migration ioctl creates a temporary inode. Since this inode is
> never linked to a directory, we don't need to reserve journal credits
> required for modifying the directory.
Looks good. You can add:
Reviewed-by: Jan Kara <jack@suse.cz>
Honza
>
> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
> ---
> fs/ext4/migrate.c | 11 +++++++----
> 1 file changed, 7 insertions(+), 4 deletions(-)
>
> diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c
> index 4e4fcfd..480acf4 100644
> --- a/fs/ext4/migrate.c
> +++ b/fs/ext4/migrate.c
> @@ -456,11 +456,14 @@ int ext4_ext_migrate(struct inode *inode)
> */
> return retval;
>
> + /*
> + * Worst case we can touch the allocation bitmaps, a bgd
> + * block, and a block to link in the orphan list. We do need
> + * need to worry about credits for modifying the quota inode.
> + */
> handle = ext4_journal_start(inode, EXT4_HT_MIGRATE,
> - EXT4_DATA_TRANS_BLOCKS(inode->i_sb) +
> - EXT4_INDEX_EXTRA_TRANS_BLOCKS + 3 +
> - EXT4_MAXQUOTAS_INIT_BLOCKS(inode->i_sb)
> - + 1);
> + 4 + EXT4_MAXQUOTAS_TRANS_BLOCKS(inode->i_sb));
> +
> if (IS_ERR(handle)) {
> retval = PTR_ERR(handle);
> return retval;
> --
> 1.7.12.rc0.22.gcdd159b
>
> --
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--
Jan Kara <jack@suse.cz>
SUSE Labs, CR
next prev parent reply other threads:[~2013-02-11 16:26 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-09 21:53 [PATCH 00/12] jbd2 optimization and bug fixes Theodore Ts'o
2013-02-09 21:53 ` [PATCH 01/12] jbd2: track request delay statistics Theodore Ts'o
2013-02-11 15:57 ` Jan Kara
2013-02-09 21:53 ` [PATCH 02/12] jbd2: revert "jbd2: add COW fields to struct jbd2_journal_handle" Theodore Ts'o
2013-02-11 15:58 ` Jan Kara
2013-02-09 21:53 ` [PATCH 03/12] jbd2: add tracepoints which provide per-handle statistics Theodore Ts'o
2013-02-09 21:53 ` [PATCH 04/12] ext4: move the jbd2 wrapper functions out of super.c Theodore Ts'o
2013-02-09 21:53 ` [PATCH 05/12] ext4: pass context information to jbd2__journal_start() Theodore Ts'o
2013-02-11 16:16 ` Jan Kara
2013-02-11 18:13 ` Theodore Ts'o
2013-02-11 19:58 ` Jan Kara
2013-02-11 20:14 ` Theodore Ts'o
2013-02-09 21:53 ` [PATCH 06/12] ext4: grab page before starting transaction handle in write_begin() Theodore Ts'o
2013-02-11 16:35 ` Jan Kara
2013-02-09 21:53 ` [PATCH 07/12] ext4: start handle at the last possible moment in ext4_unlink() Theodore Ts'o
2013-02-11 16:21 ` Jan Kara
2013-02-09 21:53 ` [PATCH 08/12] ext4: start handle at the last possible moment in ext4_rmdir() Theodore Ts'o
2013-02-11 16:22 ` Jan Kara
2013-02-09 21:53 ` [PATCH 09/12] ext4: fix the number of credits needed for ext4_ext_migrate() Theodore Ts'o
2013-02-11 16:26 ` Jan Kara [this message]
2013-02-09 21:53 ` [PATCH 10/12] ext4: fix the number of credits needed for ext4_unlink() and ext4_rmdir() Theodore Ts'o
2013-02-11 16:28 ` Jan Kara
2013-02-11 18:30 ` Theodore Ts'o
2013-02-11 19:30 ` Jan Kara
2013-02-09 21:53 ` [PATCH 11/12] ext4: fix the number of credits needed for acl ops with inline data Theodore Ts'o
2013-02-10 13:42 ` Tao Ma
2013-02-10 18:15 ` Shentino
2013-02-10 19:43 ` Theodore Ts'o
2013-02-11 16:16 ` Andreas Dilger
2013-02-11 16:30 ` Jan Kara
2013-02-09 21:53 ` [PATCH 12/12] ext4: start handle at the last possible moment when creating inodes Theodore Ts'o
2013-02-11 1:47 ` Theodore Ts'o
2013-02-11 16:00 ` Andreas Dilger
2013-02-11 15:52 ` [PATCH 00/12] jbd2 optimization and bug fixes Jan Kara
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