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Filename Latest commit message Latest commit date
Christoph Böhmwalder dde34ef0bc drbd: correctly submit flush bio on barrier 
commit 3899d94e3831ee07ea6821c032dc297aec80586a upstream.

When we receive a flush command (or "barrier" in DRBD), we currently use
a REQ_OP_FLUSH with the REQ_PREFLUSH flag set.

The correct way to submit a flush bio is by using a REQ_OP_WRITE without
any data, and set the REQ_PREFLUSH flag.

Since commit b4a6bb3a67aa ("block: add a sanity check for non-write
flush/fua bios"), this triggers a warning in the block layer, but this
has been broken for quite some time before that.

So use the correct set of flags to actually make the flush happen.

Cc: Christoph Hellwig <hch@infradead.org>
Cc: stable@vger.kernel.org
Fixes: f9ff0da564 ("drbd: allow parallel flushes for multi-volume resources")
Reported-by: Thomas Voegtle <tv@lio96.de>
Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20230503121937.17232-1-christoph.boehmwalder@linbit.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-05-17 11:36:04 +02:00
arch ARM: dts: s5pv210: correct MIPI CSIS clock name 2023-05-17 11:36:01 +02:00
block
certs
crypto
Documentation
drivers drbd: correctly submit flush bio on barrier 2023-05-17 11:36:04 +02:00
fs ext4: fix invalid free tracking in ext4_xattr_move_to_block() 2023-05-17 11:36:03 +02:00
include tty: Prevent writing chars during tcsetattr TCSADRAIN/FLUSH 2023-05-17 11:36:04 +02:00
init
ipc
kernel relayfs: fix out-of-bounds access in relay_file_read 2023-05-17 11:35:58 +02:00
lib
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mm
net af_packet: Don't send zero-byte data in packet_sendmsg_spkt(). 2023-05-17 11:35:59 +02:00
samples
scripts
security
sound ALSA: caiaq: input: Add error handling for unsupported input methods in snd_usb_caiaq_input_init 2023-05-17 11:35:59 +02:00
tools perf symbols: Fix return incorrect build_id size in elf_read_build_id() 2023-05-17 11:36:00 +02:00
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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.