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Filename Latest commit message Latest commit date
Jason A. Donenfeld 72d9ce5b08 fs: check FMODE_LSEEK to control internal pipe splicing 
[ Upstream commit 97ef77c52b789ec1411d360ed99dca1efe4b2c81 ]

The original direct splicing mechanism from Jens required the input to
be a regular file because it was avoiding the special socket case. It
also recognized blkdevs as being close enough to a regular file. But it
forgot about chardevs, which behave the same way and work fine here.

This is an okayish heuristic, but it doesn't totally work. For example,
a few chardevs should be spliceable here. And a few regular files
shouldn't. This patch fixes this by instead checking whether FMODE_LSEEK
is set, which represents decently enough what we need rewinding for when
splicing to internal pipes.

Fixes: b92ce55893 ("[PATCH] splice: add direct fd <-> fd splicing support")
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-25 11:17:44 +02:00
arch crypto: arm64/gcm - Select AEAD for GHASH_ARM64_CE 2022-08-25 11:17:41 +02:00
block blk-mq: don't create hctx debugfs dir until q->debugfs_dir is created 2022-08-25 11:17:36 +02:00
certs
crypto
Documentation
drivers drm/exynos/exynos7_drm_decon: free resources when clk_set_parent() failed. 2022-08-25 11:17:43 +02:00
fs fs: check FMODE_LSEEK to control internal pipe splicing 2022-08-25 11:17:44 +02:00
include
init
ipc
kernel nohz/full, sched/rt: Fix missed tick-reenabling bug in dequeue_task_rt() 2022-08-25 11:17:36 +02:00
lib
LICENSES
mm
net tcp: make retransmitted SKB fit into the send window 2022-08-25 11:17:43 +02:00
samples
scripts
security selinux: Add boundary check in put_entry() 2022-08-25 11:17:32 +02:00
sound
tools selftests: timers: clocksource-switch: fix passing errors from child 2022-08-25 11:17:43 +02:00
usr
virt
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README

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.