Revision 1d5a474240407c38ca8c7484a656ee39f585399c authored by Martin Habets on 02 January 2022, 08:41:22 UTC, committed by Jakub Kicinski on 05 January 2022, 02:14:21 UTC
The RX page_ring is an optional feature that improves
performance. When allocation fails the driver can still
function, but possibly with a lower bandwidth.
Guard against dereferencing a NULL page_ring.
Fixes: 2768935a4660 ("sfc: reuse pages to avoid DMA mapping/unmapping costs")
Signed-off-by: Martin Habets <habetsm.xilinx@gmail.com>
Reported-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/164111288276.5798.10330502993729113868.stgit@palantir17.mph.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
1 parent 6f89ecf
api-summary.rst
=============================
Linux Filesystems API summary
=============================
This section contains API-level documentation, mostly taken from the source
code itself.
The Linux VFS
=============
The Filesystem types
--------------------
.. kernel-doc:: include/linux/fs.h
:internal:
The Directory Cache
-------------------
.. kernel-doc:: fs/dcache.c
:export:
.. kernel-doc:: include/linux/dcache.h
:internal:
Inode Handling
--------------
.. kernel-doc:: fs/inode.c
:export:
.. kernel-doc:: fs/bad_inode.c
:export:
Registration and Superblocks
----------------------------
.. kernel-doc:: fs/super.c
:export:
File Locks
----------
.. kernel-doc:: fs/locks.c
:export:
.. kernel-doc:: fs/locks.c
:internal:
Other Functions
---------------
.. kernel-doc:: fs/mpage.c
:export:
.. kernel-doc:: fs/namei.c
:export:
.. kernel-doc:: fs/buffer.c
:export:
.. kernel-doc:: block/bio.c
:export:
.. kernel-doc:: fs/seq_file.c
:export:
.. kernel-doc:: fs/filesystems.c
:export:
.. kernel-doc:: fs/fs-writeback.c
:export:
.. kernel-doc:: fs/anon_inodes.c
:export:
.. kernel-doc:: fs/attr.c
:export:
.. kernel-doc:: fs/d_path.c
:export:
.. kernel-doc:: fs/dax.c
:export:
.. kernel-doc:: fs/libfs.c
:export:
.. kernel-doc:: fs/posix_acl.c
:export:
.. kernel-doc:: fs/stat.c
:export:
.. kernel-doc:: fs/sync.c
:export:
.. kernel-doc:: fs/xattr.c
:export:
.. kernel-doc:: fs/namespace.c
:export:
The proc filesystem
===================
sysctl interface
----------------
.. kernel-doc:: kernel/sysctl.c
:export:
proc filesystem interface
-------------------------
.. kernel-doc:: fs/proc/base.c
:internal:
Events based on file descriptors
================================
.. kernel-doc:: fs/eventfd.c
:export:
eventpoll (epoll) interfaces
============================
.. kernel-doc:: fs/eventpoll.c
:internal:
The Filesystem for Exporting Kernel Objects
===========================================
.. kernel-doc:: fs/sysfs/file.c
:export:
.. kernel-doc:: fs/sysfs/symlink.c
:export:
The debugfs filesystem
======================
debugfs interface
-----------------
.. kernel-doc:: fs/debugfs/inode.c
:export:
.. kernel-doc:: fs/debugfs/file.c
:export:
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