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Filename Latest commit message Latest commit date
yangerkun 22e130fe60 ext4: clear EXT4_GROUP_INFO_WAS_TRIMMED_BIT even mount with discard 
[ Upstream commit 20cee68f5b44fdc2942d20f3172a262ec247b117 ]

Commit 3d56b8d2c7 ("ext4: Speed up FITRIM by recording flags in
ext4_group_info") speed up fstrim by skipping trim trimmed group. We
also has the chance to clear trimmed once there exists some block free
for this group(mount without discard), and the next trim for this group
will work well too.

For mount with discard, we will issue dicard when we free blocks, so
leave trimmed flag keep alive to skip useless trim trigger from
userspace seems reasonable. But for some case like ext4 build on
dm-thinpool(ext4 blocksize 4K, pool blocksize 128K), discard from ext4
maybe unaligned for dm thinpool, and thinpool will just finish this
discard(see process_discard_bio when begein equals to end) without
actually process discard. For this case, trim from userspace can really
help us to free some thinpool block.

So convert to clear trimmed flag for all case no matter mounted with
discard or not.

Fixes: 3d56b8d2c7 ("ext4: Speed up FITRIM by recording flags in ext4_group_info")
Signed-off-by: yangerkun <yangerkun@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20240817085510.2084444-1-yangerkun@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:30 +01:00
arch xen: use correct end address of kernel for conflict checking 2024-11-08 16:20:30 +01:00
block block, bfq: don't break merge chain in bfq_split_bfqq() 2024-11-08 16:20:28 +01:00
certs
crypto crypto: ecrdsa - Fix module auto-load on add_key 2024-06-16 13:28:51 +02:00
Documentation ipmi: docs: don't advertise deprecated sysfs entries 2024-11-08 16:20:29 +01:00
drivers tpm: Clean up TPM space after command failure 2024-11-08 16:20:30 +01:00
fs ext4: clear EXT4_GROUP_INFO_WAS_TRIMMED_BIT even mount with discard 2024-11-08 16:20:30 +01:00
include jbd2: introduce/export functions jbd2_journal_submit|finish_inode_data_buffers() 2024-11-08 16:20:30 +01:00
init init: open /initrd.image with O_LARGEFILE 2024-04-13 12:51:36 +02:00
ipc ipc: replace costly bailout check in sysvipc_find_ipc() 2024-09-04 13:15:02 +02:00
kernel kthread: fix task state in kthread worker if being frozen 2024-11-08 16:20:30 +01:00
lib xz: cleanup CRC32 edits from 2018 2024-11-08 16:20:30 +01:00
LICENSES
mm memcg_write_event_control(): fix a user-triggerable oops 2024-09-04 13:14:50 +02:00
net net: tipc: avoid possible garbage value 2024-11-08 16:20:27 +01:00
samples media: rename VFL_TYPE_GRABBER to _VIDEO 2024-03-26 18:22:22 -04:00
scripts scripts: kconfig: merge_config: config files: add a trailing newline 2024-11-08 16:20:24 +01:00
security smack: unix sockets: fix accept()ed socket label 2024-09-12 11:03:52 +02:00
sound ASoC: tda7419: fix module autoloading 2024-11-08 16:20:25 +01:00
tools selftests/bpf: Fix error compiling test_lru_map.c 2024-11-08 16:20:30 +01:00
usr
virt KVM: async_pf: Cleanup kvm_setup_async_pf() 2024-05-02 16:18:32 +02:00
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Makefile Linux 5.4.284 2024-09-12 11:03:57 +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.