From: John Garry <john.g.garry@oracle.com>
To: Dave Chinner <david@fromorbit.com>
Cc: djwong@kernel.org, hch@lst.de, viro@zeniv.linux.org.uk,
brauner@kernel.org, jack@suse.cz, chandan.babu@oracle.com,
willy@infradead.org, axboe@kernel.dk, martin.petersen@oracle.com,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
tytso@mit.edu, jbongio@google.com, ojaswin@linux.ibm.com,
ritesh.list@gmail.com, mcgrof@kernel.org, p.raghav@samsung.com,
linux-xfs@vger.kernel.org, catherine.hoang@oracle.com
Subject: Re: [PATCH v3 10/21] xfs: Update xfs_is_falloc_aligned() mask for forcealign
Date: Wed, 1 May 2024 11:48:59 +0100 [thread overview]
Message-ID: <33700d9d-08d3-4fad-8ca4-e6beb3529bcb@oracle.com> (raw)
In-Reply-To: <ZjGAN8g3yqH01g1w@dread.disaster.area>
On 01/05/2024 00:35, Dave Chinner wrote:
>> return !((pos | len) & mask);
> I think this whole function needs to be rewritten so that
> non-power-of-2 extent sizes are supported on both devices properly.
>
> xfs_extlen_t fsbs = 1;
> u64 bytes;
> u32 mod;
>
> if (xfs_inode_has_forcealign(ip))
> fsbs = ip->i_extsize;
> else if (XFS_IS_REALTIME_INODE(ip))
> fsbs = mp->m_sb.sb_rextsize;
>
> bytes = XFS_FSB_TO_B(mp, fsbs);
> if (is_power_of_2(fsbs))
> return !((pos | len) & (bytes - 1));
>
> div_u64_rem(pos, bytes, &mod);
> if (mod)
> return false;
> div_u64_rem(len, bytes, &mod);
> return mod == 0;
ok, but I still have a doubt about non-power-of-2 forcealign extsize
support.
Thanks,
John
next prev parent reply other threads:[~2024-05-01 10:49 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-29 17:47 [PATCH v3 00/21] block atomic writes for XFS John Garry
2024-04-29 17:47 ` [PATCH v3 01/21] fs: Add generic_atomic_write_valid_size() John Garry
2024-04-29 17:47 ` [PATCH v3 02/21] xfs: only allow minlen allocations when near ENOSPC John Garry
2024-04-29 17:47 ` [PATCH v3 03/21] xfs: always tail align maxlen allocations John Garry
2024-04-29 17:47 ` [PATCH v3 04/21] xfs: simplify extent allocation alignment John Garry
2024-04-29 17:47 ` [PATCH v3 05/21] xfs: make EOF allocation simpler John Garry
2024-04-29 17:47 ` [PATCH v3 06/21] xfs: introduce forced allocation alignment John Garry
2024-04-29 17:47 ` [PATCH v3 07/21] fs: xfs: align args->minlen for " John Garry
2024-06-05 14:26 ` John Garry
2024-06-06 8:47 ` Dave Chinner
2024-06-06 16:22 ` John Garry
2024-06-07 6:04 ` John Garry
2024-04-29 17:47 ` [PATCH v3 08/21] xfs: Introduce FORCEALIGN inode flag John Garry
2024-04-30 23:22 ` Dave Chinner
2024-05-01 10:03 ` John Garry
2024-05-02 0:50 ` Dave Chinner
2024-05-02 7:56 ` John Garry
2024-06-12 2:10 ` Long Li
2024-06-12 6:55 ` John Garry
2024-04-29 17:47 ` [PATCH v3 09/21] xfs: Do not free EOF blocks for forcealign John Garry
2024-04-30 22:54 ` Dave Chinner
2024-05-01 8:30 ` John Garry
2024-05-02 1:11 ` Dave Chinner
2024-05-02 8:55 ` John Garry
2024-04-29 17:47 ` [PATCH v3 10/21] xfs: Update xfs_is_falloc_aligned() mask " John Garry
2024-04-30 23:35 ` Dave Chinner
2024-05-01 10:48 ` John Garry [this message]
2024-05-01 23:45 ` Darrick J. Wong
2024-04-29 17:47 ` [PATCH RFC v3 11/21] xfs: Unmap blocks according to forcealign John Garry
2024-05-01 0:10 ` Dave Chinner
2024-05-01 10:54 ` John Garry
2024-06-06 9:50 ` John Garry
2024-04-29 17:47 ` [PATCH RFC v3 12/21] xfs: Only free full extents for forcealign John Garry
2024-05-01 0:53 ` Dave Chinner
2024-05-01 11:24 ` John Garry
2024-05-01 23:53 ` Darrick J. Wong
2024-05-02 3:12 ` Dave Chinner
2024-04-29 17:47 ` [PATCH v3 13/21] xfs: Enable file data forcealign feature John Garry
2024-04-29 17:47 ` [PATCH v3 14/21] iomap: Sub-extent zeroing John Garry
2024-05-01 1:07 ` Dave Chinner
2024-05-01 10:23 ` John Garry
2024-05-30 10:40 ` John Garry
2024-06-11 3:10 ` Long Li
2024-06-11 7:29 ` John Garry
2024-04-29 17:47 ` [PATCH v3 15/21] fs: xfs: " John Garry
2024-05-01 1:32 ` Dave Chinner
2024-05-01 11:36 ` John Garry
2024-05-02 1:26 ` Dave Chinner
2024-04-29 17:47 ` [PATCH v3 16/21] fs: Add FS_XFLAG_ATOMICWRITES flag John Garry
2024-04-29 17:47 ` [PATCH v3 17/21] iomap: Atomic write support John Garry
2024-05-01 1:47 ` Dave Chinner
2024-05-01 11:08 ` John Garry
2024-05-02 1:43 ` Dave Chinner
2024-05-02 9:12 ` John Garry
2024-04-29 17:47 ` [PATCH v3 18/21] xfs: Support FS_XFLAG_ATOMICWRITES for forcealign John Garry
2024-04-29 17:47 ` [PATCH v3 19/21] xfs: Support atomic write for statx John Garry
2024-04-29 17:47 ` [PATCH v3 20/21] xfs: Validate atomic writes John Garry
2024-04-29 17:47 ` [PATCH v3 21/21] xfs: Support setting FMODE_CAN_ATOMIC_WRITE John Garry
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