linux-kernel - write(2) and page cache

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <CALHgxMEtcdkmrwnu8+mAhUOAMQz7B3V7J01sChF7x3-QQsRcBw@mail.gmail.com>
Date:	Sun, 28 Jul 2013 14:48:09 -0400
From:	dmi p <d3vp0ll@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: write(2) and page cache

Hi,
When I write(2) on a file such that the size of the buffer being
written is less than the page size, and the page is not in the page
cache, does the write syscall block until the page is brought into the
page cache from disk (to modify it and eventually write back), or is
the page reading part async with respect to write?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/