kernelnewbies.kernelnewbies.org archive mirror
 help / color / mirror / Atom feed
From: horserivers@gmail.com (horseriver)
To: kernelnewbies@lists.kernelnewbies.org
Subject: internel implemention of file operation
Date: Fri, 11 Jan 2013 05:14:43 +0800	[thread overview]
Message-ID: <20130110211443.GA4817@debian.localdomain> (raw)
In-Reply-To: <CAAYFAvpB=tG-4L_M5c3myFAbaJoWjEWSfLEUYpankcD70NToEg@mail.gmail.com>

hi:

  these two wayes of operating one file :

  1.use open/write interface call .

  2.mmap this file into memory , then access this memory area and do r/w . 

  what is the essential difference between this teo wayes?

thanks!

  parent reply	other threads:[~2013-01-10 21:14 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-01-03  6:59 internel implemention of file operation horseriver
2013-01-03  7:18 ` Rajat Sharma
2013-01-03  7:31   ` horseriver
2013-01-03  7:46     ` Rajat Sharma
2013-01-03 10:09       ` horseriver
2013-01-03 10:31         ` Rajat Sharma
2013-01-10 21:14   ` horseriver [this message]
2013-01-11  7:09     ` Rajat Sharma
2013-01-10 22:01       ` horseriver
2013-01-11  9:06         ` Rajat Sharma
  -- strict thread matches above, loose matches on Subject: below --
2013-02-01 18:09 dspjmt

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=20130110211443.GA4817@debian.localdomain \
    --to=horserivers@gmail.com \
    --cc=kernelnewbies@lists.kernelnewbies.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;
as well as URLs for NNTP newsgroup(s).