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5ac87a885a
Rather than trying to merge again when ostensibly allocating a new VMA, instead defer until the VMA is added and attempt to merge the existing range. This way we have no complicated unwinding logic midway through the process of mapping the VMA. In addition this removes limitations on the VMA not being able to be the first in the virtual memory address space which was previously implicitly required. In theory, for this very same reason, we should unconditionally attempt merge here, however this is likely to have a performance impact so it is better to avoid this given the unlikely outcome of a merge. [lorenzo.stoakes@oracle.com: remove unnecessary indirection] Link: https://lkml.kernel.org/r/5106696d-e625-4d8a-8545-9d1430301730@lucifer.local Link: https://lkml.kernel.org/r/d4f84502605d7651ac114587f507395c0fc76004.1729858176.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Cc: Jann Horn <jannh@google.com> Cc: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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 reStructuredText 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.