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Filename Latest commit message Latest commit date
Josef Bacik 47062af859 btrfs: properly report 0 avail for very full file systems 
commit 58bfe2ccec5f9f137b41dd38f335290dcc13cd5c upstream.

A user reported some issues with smaller file systems that get very
full.  While investigating this issue I noticed that df wasn't showing
100% full, despite having 0 chunk space and having < 1MiB of available
metadata space.

This turns out to be an overflow issue, we're doing:

  total_available_metadata_space - SZ_4M < global_block_rsv_size

to determine if there's not enough space to make metadata allocations,
which overflows if total_available_metadata_space is < 4M.  Fix this by
checking to see if our available space is greater than the 4M threshold.
This makes df properly report 100% usage on the file system.

CC: stable@vger.kernel.org # 4.14+
Signed-off-by: Josef Bacik <josef@toxicpanda.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>
2023-10-10 21:46:41 +02:00
arch powerpc/watchpoints: Annotate atomic context in more places 2023-10-10 21:46:40 +02:00
block
certs
crypto X.509: if signature is unsupported skip validation 2023-09-23 10:59:55 +02:00
Documentation perf/smmuv3: Enable HiSilicon Erratum 162001900 quirk for HIP08/09 2023-09-23 11:00:03 +02:00
drivers i2c: i801: unregister tco_pdev in i801_probe() error path 2023-10-10 21:46:41 +02:00
fs btrfs: properly report 0 avail for very full file systems 2023-10-10 21:46:41 +02:00
include bpf: Clarify error expectations from bpf_clone_redirect 2023-10-10 21:46:40 +02:00
init
ipc
kernel ring-buffer: Update "shortest_full" in polling 2023-10-10 21:46:41 +02:00
lib kobject: Add sanity check for kset->kobj.ktype in kset_register() 2023-09-23 11:00:05 +02:00
LICENSES
mm tmpfs: verify {g,u}id mount options correctly 2023-09-23 10:59:40 +02:00
net ncsi: Propagate carrier gain/loss events to the NCSI controller 2023-10-10 21:46:40 +02:00
samples
scripts kconfig: fix possible buffer overflow 2023-09-23 10:59:57 +02:00
security Smack:- Use overlay inode label in smack_inode_copy_up() 2023-10-10 21:46:41 +02:00
sound ALSA: hda: Disable power save for solving pop issue on Lenovo ThinkCentre M70q 2023-10-10 21:46:41 +02:00
tools bpf: Clarify error expectations from bpf_clone_redirect 2023-10-10 21:46:40 +02:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
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COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS iio: stx104: Move to addac subdirectory 2023-08-30 16:27:12 +02:00
Makefile Linux 5.4.257 2023-09-23 11:00:07 +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.