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Qu Wenruo ee158e16c9 btrfs: set correct ram_bytes when splitting ordered extent 
commit 63a6ce5a1a upstream.

[BUG]
When running generic/287, the following file extent items can be
generated:

        item 16 key (258 EXTENT_DATA 2682880) itemoff 15305 itemsize 53
                generation 9 type 1 (regular)
                extent data disk byte 1378414592 nr 462848
                extent data offset 0 nr 462848 ram 2097152
                extent compression 0 (none)

Note that file extent item is not a compressed one, but its ram_bytes is
way larger than its disk_num_bytes.

According to btrfs on-disk scheme, ram_bytes should match disk_num_bytes
if it's not a compressed one.

[CAUSE]
Since commit b73a6fd1b1 ("btrfs: split partial dio bios before
submit"), for partial dio writes, we would split the ordered extent.

However the function btrfs_split_ordered_extent() doesn't update the
ram_bytes even it has already shrunk the disk_num_bytes.

Originally the function btrfs_split_ordered_extent() is only introduced
for zoned devices in commit d22002fd37 ("btrfs: zoned: split ordered
extent when bio is sent"), but later commit b73a6fd1b1 ("btrfs: split
partial dio bios before submit") makes non-zoned btrfs affected.

Thankfully for un-compressed file extent, we do not really utilize the
ram_bytes member, thus it won't cause any real problem.

[FIX]
Also update btrfs_ordered_extent::ram_bytes inside
btrfs_split_ordered_extent().

Fixes: d22002fd37 ("btrfs: zoned: split ordered extent when bio is sent")
CC: stable@vger.kernel.org # 5.15+
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-05-17 12:15:01 +02:00
arch arm64: dts: mediatek: mt8183-pico6: Fix bluetooth node 2024-05-17 12:14:51 +02:00
block blk-iocost: do not WARN if iocg was already offlined 2024-05-17 12:14:50 +02:00
certs This update includes the following changes: 2023-11-02 16:15:30 -10:00
crypto Revert "crypto: pkcs7 - remove sha1 support" 2024-04-03 15:32:31 +02:00
Documentation dt-bindings: net: mediatek: remove wrongly added clocks and SerDes 2024-05-17 12:14:54 +02:00
drivers firewire: ohci: fulfill timestamp for some local asynchronous transaction 2024-05-17 12:15:00 +02:00
fs btrfs: set correct ram_bytes when splitting ordered extent 2024-05-17 12:15:01 +02:00
include Reapply "drm/qxl: simplify qxl_fence_wait" 2024-05-17 12:14:58 +02:00
init rust: make mutually exclusive with CFI_CLANG 2024-05-02 16:35:25 +02:00
io_uring io_uring: Fix io_cqring_wait() not restoring sigmask on get_timespec64() failure 2024-04-27 17:12:47 +02:00
ipc shm: Slim down dependencies 2023-12-20 19:26:31 -05:00
kernel bpf: Check bloom filter map value size 2024-05-17 12:14:39 +02:00
lib Fix a potential infinite loop in extract_user_to_sg() 2024-05-17 12:14:29 +02:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
mm mm/slub: avoid zeroing outside-object freepointer for single free 2024-05-17 12:15:00 +02:00
net net/smc: fix neighbour and rtable leak in smc_ib_find_route() 2024-05-17 12:14:55 +02:00
rust rust: macros: fix soundness issue in module! macro 2024-05-17 12:14:22 +02:00
samples work around gcc bugs with 'asm goto' with outputs 2024-02-09 15:57:48 -08:00
scripts kbuild: Disable KCSAN for autogenerated *.mod.c intermediaries 2024-05-17 12:14:39 +02:00
security selinux: avoid dereference of garbage after mount failure 2024-04-10 16:38:01 +02:00
sound ALSA: hda/realtek: Fix conflicting PCI SSID 17aa:386f for Lenovo Legion models 2024-05-17 12:15:00 +02:00
tools selftests: test_bridge_neigh_suppress.sh: Fix failures due to duplicate MAC 2024-05-17 12:14:53 +02:00
usr Kbuild updates for v6.8 2024-01-18 17:57:07 -08:00
virt KVM: Always flush async #PF workqueue when vCPU is being destroyed 2024-04-03 15:32:03 +02:00
.clang-format clang-format: Update with v6.7-rc4's for_each macro list 2023-12-08 23:54:38 +01:00
.cocciconfig
.editorconfig Add .editorconfig file for basic formatting 2023-12-28 16:22:47 +09:00
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore Add .editorconfig file for basic formatting 2023-12-28 16:22:47 +09:00
.mailmap drm fixes for 6.8 final 2024-03-08 12:44:56 -08:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: supplement of zswap maintainers update 2024-01-25 23:52:21 -08:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS drm fixes for 6.8 final 2024-03-08 12:44:56 -08:00
Makefile Linux 6.8.9 2024-05-02 16:35:35 +02:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.