This series completes support for zoned block devices in f2fs. The core zoned block device support was added to Jens linux-block tree, branch for-4.10/block. (Please note that patch 1/9 is not specific to this series)
The core part of the zoned block device support was already implemented by Jaegeuk with the addition of the "lfs" mode and atomic block allocation and BIO issuing fixes. The patches in this series build on top of this support, adding fixes for section discard and mount options checks. Whereas older prototype ZBC support patch sets mapped discard to the reset write pointer command for zoned block devices, the patches merged in Jens for-4.10/block do not and a zone reset must be done with the function blkdev_reset_zones. So in f2fs, the function f2fs_issue_discard is modified to execute this function when the section to discard is stored in a sequential zone. For sections stored in conventional zones, the regular discard operation is used if the drive supports it. This means that the zone type of each section is needed for discard. To avoid a costly report zones execution before each section discard, the type of all zones of the device is cached in the super block information. This cache is initialized at mount time and does not need any update as the zone type of zoned block devices is fixed. For convenience and debugging, tracing of zone reset events is also added similarly to the traces for regular discard events. Damien Le Moal (9): f2fs: Add missing break in switch-case f2fs: Use generic zoned block device terminology f2fs: Check zoned block feature for host-managed zoned block devices f2fs: Suppress discard warning message for zoned block devices f2fs: Always enable discard for zoned blocks devices f2fs: Do not allow adaptive mode for host-managed zoned block devices f2fs: Cache zoned block devices zone type f2fs: Reset sequential zones on zoned block devices f2fs: Trace reset zone events fs/f2fs/data.c | 2 +- fs/f2fs/f2fs.h | 36 ++++++++++----- fs/f2fs/segment.c | 61 +++++++++++++++++++++---- fs/f2fs/super.c | 106 +++++++++++++++++++++++++++++++++++++++++++- include/trace/events/f2fs.h | 21 +++++++++ 5 files changed, 205 insertions(+), 21 deletions(-) -- 2.7.4 Western Digital Corporation (and its subsidiaries) E-mail Confidentiality Notice & Disclaimer: This e-mail and any files transmitted with it may contain confidential or legally privileged information of WDC and/or its affiliates, and are intended solely for the use of the individual or entity to which they are addressed. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited. If you have received this e-mail in error, please notify the sender immediately and delete the e-mail in its entirety from your system. ------------------------------------------------------------------------------ The Command Line: Reinvented for Modern Developers Did the resurgence of CLI tooling catch you by surprise? Reconnect with the command line and become more productive. Learn the new .NET and ASP.NET CLI. Get your free copy! http://sdm.link/telerik _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
