From: "Caleb D.S. Brzezinski" <calebdsb@protonmail.com>
To: hirofumi@mail.parknet.co.jp
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
"Caleb D.S. Brzezinski" <calebdsb@protonmail.com>
Subject: [PATCH 0/3] fat: add a cache for msdos_format_name()
Date: Sun, 29 Aug 2021 14:25:14 +0000 [thread overview]
Message-ID: <20210829142459.56081-1-calebdsb@protonmail.com> (raw)
Hi all,
This patch series adds a cache for the formatted names created by
msdos_format_name(). In my testing, it resulted in approximately a 0.2 ms
decrease in kernel time for listing a small directory.
The overhead is in memory, but each entry is only 25 bytes plus
sizeof(struct hlist_node), and the cache also actively collects
infrequently used nodes, keeping overall memory usage low.
Caleb D.S. Brzezinski (3):
fat: define functions and data structures for a formatted name cache
fat: add the msdos_format_name() filename cache
fat: add hash machinery to relevant filesystem operations
fs/fat/namei_msdos.c | 140 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 140 insertions(+)
base-commit: 85a90500f9a1717c4e142ce92e6c1cb1a339ec78
--
2.32.0
next reply other threads:[~2021-08-29 14:26 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-29 14:25 Caleb D.S. Brzezinski [this message]
2021-08-29 14:25 ` [PATCH 1/3] fat: define functions and data structures for a formatted name cache Caleb D.S. Brzezinski
2021-08-29 21:05 ` kernel test robot
2021-08-29 21:05 ` [RFC PATCH] fat: msdos_ncache can be static kernel test robot
2021-08-29 14:25 ` [PATCH 2/3] fat: add the msdos_format_name() filename cache Caleb D.S. Brzezinski
2021-08-29 15:11 ` Al Viro
2021-08-29 15:26 ` Al Viro
2021-08-29 17:19 ` Caleb D.S. Brzezinski
2021-08-29 17:11 ` Caleb D.S. Brzezinski
2021-08-29 21:23 ` Al Viro
2021-08-29 14:25 ` [PATCH 3/3] fat: add hash machinery to relevant filesystem operations Caleb D.S. Brzezinski
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210829142459.56081-1-calebdsb@protonmail.com \
--to=calebdsb@protonmail.com \
--cc=hirofumi@mail.parknet.co.jp \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®