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| Filename | Latest commit message | Latest commit date |
|---|---|---|
6f8830f5bb
There's a rather long standing regression from the commit "libiscsi:
Reduce locking contention in fast path"
Depending on iSCSI target behavior, it's possible to hit the case in
iscsi_complete_task where the task is still on a pending list
(!list_empty(&task->running)). When that happens the task is removed
from the list while holding the session back_lock, but other task list
modification occur under the frwd_lock. That leads to linked list
corruption and eventually a panicked system.
Rather than back out the session lock split entirely, in order to try
and keep some of the performance gains this patch adds another lock to
maintain the task lists integrity.
Major enterprise supported kernels have been backing out the lock split
for while now, thanks to the efforts at IBM where a lab setup has the
most reliable reproducer I've seen on this issue. This patch has been
tested there successfully.
Signed-off-by: Chris Leech <cleech@redhat.com>
Fixes:
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| firmware | ||
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| kernel | ||
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| MAINTAINERS | ||
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| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.