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Jeff Layton 407710427d filelock: new helper: vfs_inode_has_locks
[ Upstream commit ab1ddef98a ]

Ceph has a need to know whether a particular inode has any locks set on
it. It's currently tracking that by a num_locks field in its
filp->private_data, but that's problematic as it tries to decrement this
field when releasing locks and that can race with the file being torn
down.

Add a new vfs_inode_has_locks helper that just returns whether any locks
are currently held on the inode.

Reviewed-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Stable-dep-of: 461ab10ef7 ("ceph: switch to vfs_inode_has_locks() to fix file lock bug")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-14 10:16:47 +01:00
arch riscv: stacktrace: Fixup ftrace_graph_ret_addr retp argument 2023-01-14 10:16:42 +01:00
block blk-mq: fix possible memleak when register 'hctx' failed 2023-01-14 10:16:19 +01:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:13:17 +02:00
crypto crypto: tcrypt - Fix multibuffer skcipher speed test mem leak 2023-01-14 10:15:50 +01:00
Documentation ASoC: dt-bindings: wcd9335: fix reset line polarity in example 2023-01-14 10:15:33 +01:00
drivers drm/meson: Reduce the FIFO lines held when AFBC is not used 2023-01-14 10:16:47 +01:00
fs filelock: new helper: vfs_inode_has_locks 2023-01-14 10:16:47 +01:00
include filelock: new helper: vfs_inode_has_locks 2023-01-14 10:16:47 +01:00
init init/Kconfig: fix CC_HAS_ASM_GOTO_TIED_OUTPUT test with dash 2022-12-02 17:40:03 +01:00
io_uring io_uring: pass in EPOLL_URING_WAKE for eventfd signaling and wakeups 2023-01-04 11:39:24 +01:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:24:00 +01:00
kernel tracing: Fix infinite loop in tracing_read_pipe on overflowed print_trace_line 2023-01-14 10:16:33 +01:00
lib mm/highmem: Lift memcpy_[to|from]_page to core 2023-01-14 10:16:42 +01:00
LICENSES LICENSES/deprecated: add Zlib license text 2020-09-16 14:33:49 +02:00
mm mm, compaction: fix fast_isolate_around() to stay within boundaries 2023-01-14 10:16:27 +01:00
net nfc: Fix potential resource leaks 2023-01-14 10:16:45 +01:00
samples samples: vfio-mdev: Fix missing pci_disable_device() in mdpy_fb_probe() 2023-01-14 10:16:01 +01:00
scripts scripts/faddr2line: Fix regression in name resolution on ppc64le 2022-12-08 11:23:54 +01:00
security device_cgroup: Roll back to original exceptions after copy failure 2023-01-14 10:16:36 +01:00
sound ASoC: jz4740-i2s: Handle independent FIFO flush bits 2023-01-14 10:16:35 +01:00
tools perf probe: Fix to get the DW_AT_decl_file and DW_AT_call_file as unsinged data 2023-01-14 10:16:41 +01:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2022-02-01 17:25:48 +01:00
virt kvm: Add support for arch compat vm ioctls 2022-10-30 09:41:15 +01:00
.clang-format RDMA 5.10 pull request 2020-10-17 11:18:18 -07:00
.cocciconfig
.get_maintainer.ignore
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore kbuild: generate Module.symvers only when vmlinux exists 2021-05-19 10:12:59 +02:00
.mailmap mailmap: add two more addresses of Uwe Kleine-König 2020-12-06 10:19:07 -08:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Jason Cooper to CREDITS 2020-11-30 10:20:34 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS futex: Move to kernel/futex/ 2023-01-14 10:15:20 +01:00
Makefile kbuild: refactor single builds of *.ko 2023-01-14 10:16:07 +01:00
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.

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.