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Filename Latest commit message Latest commit date
Matthew Wilcox (Oracle) 2295664518 block: Fix page_is_mergeable() for compound pages 
[ Upstream commit d81665198b83e55a28339d1f3e4890ed8a434556 ]

If we pass in an offset which is larger than PAGE_SIZE, then
page_is_mergeable() thinks it's not mergeable with the previous bio_vec,
leading to a large number of bio_vecs being used.  Use a slightly more
obvious test that the two pages are compatible with each other.

Fixes: 52d52d1c98 ("block: only allow contiguous page structs in a bio_vec")
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-09-03 11:26:54 +02:00
arch s390/numa: set node distance to LOCAL_DISTANCE 2020-09-03 11:26:50 +02:00
block block: Fix page_is_mergeable() for compound pages 2020-09-03 11:26:54 +02:00
certs
crypto
Documentation kbuild: support LLVM=1 to switch the default tools to Clang/LLVM 2020-08-26 10:40:47 +02:00
drivers drm/msm/adreno: fix updating ring fence 2020-09-03 11:26:54 +02:00
fs btrfs: only commit delayed items at fsync if we are logging a directory 2020-09-03 11:26:51 +02:00
include efi: provide empty efi_enter_virtual_mode implementation 2020-09-03 11:26:49 +02:00
init
ipc
kernel sched/uclamp: Fix a deadlock when enabling uclamp static key 2020-09-03 11:26:49 +02:00
lib
LICENSES
mm mm/vunmap: add cond_resched() in vunmap_pmd_range 2020-09-03 11:26:52 +02:00
net net/sched: act_ct: Fix skb double-free in tcf_ct_handle_fragments() error flow 2020-09-03 11:26:40 +02:00
samples
scripts kconfig: qconf: fix signal connection to invalid slots 2020-08-26 10:41:04 +02:00
security
sound ALSA: usb-audio: Add capture support for Saffire 6 (USB 1.1) 2020-09-03 11:26:53 +02:00
tools selftests/powerpc: Purge extra count_pmc() calls of ebb selftests 2020-09-03 11:26:44 +02:00
usr
virt KVM: arm64: Only reschedule if MMU_NOTIFIER_RANGE_BLOCKABLE is not set 2020-08-26 10:41:08 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
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COPYING
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Kbuild
Kconfig
MAINTAINERS Documentation/llvm: add documentation on building w/ Clang/LLVM 2020-08-26 10:40:46 +02:00
Makefile Linux 5.4.61 2020-08-26 10:41:08 +02:00
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.