Re: [PATCH v11 27/40] btrfs: introduce dedicated data write path for ZONED mode

2021-01-13 Thread Naohiro Aota
On Tue, Jan 12, 2021 at 02:24:09PM -0500, Josef Bacik wrote: On 12/21/20 10:49 PM, Naohiro Aota wrote: If more than one IO is issued for one file extent, these IO can be written to separate regions on a device. Since we cannot map one file extent to such a separate area, we need to follow the "o

Re: [PATCH v11 27/40] btrfs: introduce dedicated data write path for ZONED mode

2021-01-12 Thread Josef Bacik
On 12/21/20 10:49 PM, Naohiro Aota wrote: If more than one IO is issued for one file extent, these IO can be written to separate regions on a device. Since we cannot map one file extent to such a separate area, we need to follow the "one IO == one ordered extent" rule. The Normal buffered, uncom

Re: [PATCH v11 27/40] btrfs: introduce dedicated data write path for ZONED mode

2021-01-12 Thread Josef Bacik
On 12/21/20 10:49 PM, Naohiro Aota wrote: If more than one IO is issued for one file extent, these IO can be written to separate regions on a device. Since we cannot map one file extent to such a separate area, we need to follow the "one IO == one ordered extent" rule. The Normal buffered, uncom

[PATCH v11 27/40] btrfs: introduce dedicated data write path for ZONED mode

2020-12-21 Thread Naohiro Aota
If more than one IO is issued for one file extent, these IO can be written to separate regions on a device. Since we cannot map one file extent to such a separate area, we need to follow the "one IO == one ordered extent" rule. The Normal buffered, uncompressed, not pre-allocated write path (used