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5671f79b42
This wasn't wrong, but the placement of two krefs didn't make any sense. Follow some simple rules. - A kref is held inside uobjects_list - A kref is held inside the IDR - A kref is held inside file->private - A stack based kref is passed bettwen alloc_begin and alloc_abort/alloc_commit Any place we destroy one of the above pointers, we stick a put, or 'move' the kref into another pointer. The key functions have sensible semantics: - alloc_uobj fully initializes the common members in uobj, including the list - Get rid of the uverbs_idr_remove_uobj helper since IDR remove does require put, but it depends on the situation. Later patches will re-consolidate this differently. - alloc_abort always consumes the passed kref, done in the type - alloc_commit always consumes the passed kref, done in the type - rdma_remove_commit_uobject always pairs with a lookup_get After it is all done the only control flow change is to: - move a get from alloc_commit_fd_uobject to rdma_alloc_commit_uobject - add a put to remove_commit_idr_uobject - Consistenly use rdma_lookup_put in rdma_remove_commit_uobject at the right place Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| 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 | ||
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.
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.