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c1acf38cd1
This simplifies sd_spinup_disk() so the SCSI midlayer retries errors for it. Note that we retried every UA except Medium Not Present and also if scsi_status_is_good() returned failed which would happen for all check conditions. In this patch we use SCMD_FAILURE_STAT_ANY which will trigger for the same conditions as when scsi_status_is_good() returns false and there is status. This will cover all CCs including UAs so there is no explicit failures array entry for UAs except for Medium Not Present which we don't want to retry. There is one behavior change where we no longer retry when scsi_execute_cmd() returns < 0, but we should be ok. We don't need to retry for failures like the queue being removed, and for the case where there are no tags/reqs the block layer waits/retries for us. For possible memory allocation failures from blk_rq_map_kern() we use GFP_NOIO, so retrying will probably not help. We do not handle the outside loop's retries because we want to sleep between tries and we don't support that yet. Signed-off-by: Mike Christie <michael.christie@oracle.com> Link: https://lore.kernel.org/r/20240123002220.129141-6-michael.christie@oracle.com Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> |
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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.