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Filename Latest commit message Latest commit date
Zhang Yi cc16d0bc1c ext2: correct max file size computing
[ Upstream commit 50b3a818991074177a56c87124c7a7bdf5fa4f67 ]

We need to calculate the max file size accurately if the total blocks
that can address by block tree exceed the upper_limit. But this check is
not correct now, it only compute the total data blocks but missing
metadata blocks are needed. So in the case of "data blocks < upper_limit
&& total blocks > upper_limit", we will get wrong result. Fortunately,
this case could not happen in reality, but it's confused and better to
correct the computing.

  bits   data blocks   metadatablocks   upper_limit
  10        16843020            66051    2147483647
  11       134480396           263171    1073741823
  12      1074791436          1050627     536870911 (*)
  13      8594130956          4198403     268435455 (*)
  14     68736258060         16785411     134217727 (*)
  15    549822930956         67125251      67108863 (*)
  16   4398314962956        268468227      33554431 (*)

  [*] Need to calculate in depth.

Fixes: 1c2d14212b ("ext2: Fix underflow in ext2_max_size()")
Link: https://lore.kernel.org/r/20220212050532.179055-1-yi.zhang@huawei.com
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-04-15 14:18:13 +02:00
arch powerpc/perf: Don't use perf_hw_context for trace IMC PMU 2022-04-15 14:18:11 +02:00
block block: don't delete queue kobject before its children 2022-04-15 14:18:05 +02:00
certs
crypto crypto: authenc - Fix sleep in atomic context in decrypt_tail 2022-04-15 14:18:04 +02:00
Documentation Documentation: update stable tree link 2022-04-15 14:17:58 +02:00
drivers drm/amd/display: Remove vupdate_int_entry definition 2022-04-15 14:18:13 +02:00
fs ext2: correct max file size computing 2022-04-15 14:18:13 +02:00
include block: don't merge across cgroup boundaries if blkcg is enabled 2022-04-15 14:18:01 +02:00
init bpf: Add kconfig knob for disabling unpriv bpf by default 2022-02-16 12:52:49 +01:00
ipc shm: extend forced shm destroy to support objects from several IPC nses 2021-12-01 09:23:35 +01:00
kernel printk: fix return value of printk.devkmsg __setup handler 2022-04-15 14:18:08 +02:00
lib lib/raid6/test: fix multiple definition linking error 2022-04-15 14:18:02 +02:00
LICENSES
mm mm/kmemleak: reset tag when compare object pointer 2022-04-15 14:18:01 +02:00
net udp: call udp_encap_enable for v6 sockets when enabling encap 2022-04-15 14:18:01 +02:00
samples samples/kretprobes: Fix return value if register_kretprobe() failed 2021-11-17 09:48:39 +01:00
scripts kconfig: fix failing to generate auto.conf 2022-02-23 12:00:01 +01:00
security TOMOYO: fix __setup handlers return values 2022-04-15 14:18:13 +02:00
sound ASoC: msm8916-wcd-analog: Fix error handling in pm8916_wcd_analog_spmi_probe 2022-04-15 14:18:10 +02:00
tools selftests/x86: Add validity check and allow field splitting 2022-04-15 14:18:04 +02:00
usr
virt KVM: arm64: Allow SMCCC_ARCH_WORKAROUND_3 to be discovered and migrated 2022-03-19 13:40:15 +01:00
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Makefile Linux 5.4.188 2022-03-28 08:46:49 +02:00
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.