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Stefan Haberland 112ff512fc s390/dasd: add ioctl to perform a swap of the drivers copy pair
The newly defined ioctl BIODASDCOPYPAIRSWAP takes a structure that
specifies a copy pair that should be swapped. It will call the device
discipline function to perform the swap operation.

The structure looks as followed:

struct dasd_copypair_swap_data_t {
       char primary[20];
       char secondary[20];
       __u8 reserved[64];
};

where primary is the old primary device that will be replaced by the
secondary device. The old primary will become a secondary device
afterwards.

Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Link: https://lore.kernel.org/r/20220920192616.808070-6-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-09-21 08:32:51 -06:00
arch s390/dasd: add ioctl to perform a swap of the drivers copy pair 2022-09-21 08:32:51 -06:00
block blk-iocost: Remove unnecessary (void*) conversions 2022-09-20 08:28:30 -06:00
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drivers s390/dasd: add ioctl to perform a swap of the drivers copy pair 2022-09-21 08:32:51 -06:00
fs block: remove PSI accounting from the bio layer 2022-09-20 08:24:38 -06:00
include block: remove PSI accounting from the bio layer 2022-09-20 08:24:38 -06:00
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kernel sched/psi: export psi_memstall_{enter,leave} 2022-09-20 08:24:38 -06:00
lib sbitmap: fix batched wait_cnt accounting 2022-09-12 00:10:34 -06:00
LICENSES
mm mm: add PSI accounting around ->read_folio and ->readahead calls 2022-09-20 08:24:38 -06:00
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Makefile Linux 6.0-rc2 2022-08-21 17:32:54 -07:00
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.