78e1663f19
For host-aware ZBC disk, setting the device zoned model to BLK_ZONED_HA using blk_queue_set_zoned() in sd_read_block_characteristics() may result in the block device effective zoned model to be "none" (BLK_ZONED_NONE) if partitions are present on the device. In this case, sd_zbc_read_zones() should not setup the zone related queue limits for the disk so that the device limits and configuration is consistent with a regular disk and resources not uselessly allocated (e.g. the zone write pointer tracking array for zone append emulation). Furthermore, if the disk zoned model changes at run time due to the creation of a partition by the user, the zone related resources can be released. Fix both problems by introducing the function sd_zbc_clear_zone_info() to reset the scsi disk zone information and free resources and by returning early in sd_zbc_read_zones() for a block device that has a zoned model equal to BLK_ZONED_NONE. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@edc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
README
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.