BLK_FETCH_REQUEST(9) Block Devices BLK_FETCH_REQUEST(9)NAME
blk_fetch_request - fetch a request from a request queue
SYNOPSIS
struct request * blk_fetch_request(struct request_queue * q);
ARGUMENTS
q
request queue to fetch a request from
DESCRIPTION
Return the request at the top of q. The request is started on return and LLD can start processing it immediately.
RETURN
Pointer to the request at the top of q if available. Null otherwise.
CONTEXT
queue_lock must be held.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 BLK_FETCH_REQUEST(9)
Check Out this Related Man Page
TAPSET::IOSCHED(3stap)TAPSET::IOSCHED(3stap)NAME
tapset::iosched - systemtap IO scheduler probe points
DESCRIPTION
This family of probe points is used to probe the IO scheduler activities. It contains the following probe points:
ioscheduler.elv_next_request
Fires when retrieves a request from request queue
Arguments:
elevator_name
The elevator name
ioscheduler.elv_next_request.return
Fires when return from retrieving a request
Arguments:
req
Address of the request
req_flags
request flags
disk_major
disk major number of the request
disk_minor
disk minor number of the request
ioscheduler.elv_add_request
Fires when add a request into request queue
Arguments:
elevator_name
The elevator name
req
Address of the request
req_flags
request flags
disk_major
disk major number of the request
disk_minor
disk minor number of the request
ioscheduler.elv_completed_request
Fires when a request is completed
Arguments:
elevator_name
The elevator name
req
Address of the request
req_flags
request flags
disk_major
disk major number of the request
disk_minor
disk minor number of the request
SEE ALSO stap(1), stapprobes(3stap)IBM TAPSET::IOSCHED(3stap)
Hi all,
I want to create a new user and grant him ONLY transfer files access to a specific directory where he can only upload and read the files. He should be restricted to this activity only.
Regards (6 Replies)
Hi everyone,
I know the following questions are noobish questions but I am asking them because I am confused about the basics of history behind UNIX and LINUX.
Ok onto business, my questions are-:
Was/Is UNIX ever an open source operating system ?
If UNIX was... (21 Replies)
Hi,
Last 2 weeks I have searched many forums and i haven't found the answer for the question:
How to get all command output to Putty title?
Needed it for other programs to know when some jobs on a server is done and is it done right or wrong. Plink stdout and stdin wasn't working, i used many... (1 Reply)
anyone have any idea how do to this with auth_attr?
I suspect if I grant him
solaris.device.:RO::Device Allocation::help=DevAllocHeader.html
that will work but I'm unsure. Just looking for a second opinion. (10 Replies)
I am looking for a stable, reliable system to replace my current Windows systems in the home. These are simple systems that I purchased from the local Big Box store.
I have heard many good things about Unix and it's various children and it sounds like a good option to me. I have worked... (2 Replies)
We have a lot of scripts using cut as :
cut -c 0-8 --works for cut (GNU coreutils) 5.97, but does not work for cut (GNU coreutils) 8.4.
Gives error -
cut: fields and positions are numbered from 1
Try `cut --help' for more information.
The position needs to start with 1 for later... (6 Replies)
I've got a problem with a proxy configuration. We have an LDAP group that lists all users who are authorised to use the proxy to FTP (usually Filezilla) out to the world, and by implication those not in the group should be denied. My users are delighted that this has been enabled and those that... (9 Replies)
hi folks,
how to using tar with exclude directory and compress it using tar.Z
i only know how to exclude dir only with this command below:
tar -cvf /varios/restore/test.tar -X excludefile.txt /jfma/test1/
how to compress it using 1 command?
Thanx
Please use CODE tags as... (6 Replies)
Hello All,
I had recently learnt a bit of Docker(which provides containerization process).
Here are some of my learning points from it.
Let us start first with very basic question:
What is Docker:
Docker is a platform for sysadmins and developers to DEPLOY, DEVELOP and RUN applications ... (7 Replies)
What is the point of this? Whenever I close my shell it appends to the history file without adding this. I have never seen it overwrite my history file.
# When the shell exits, append to the history file instead of overwriting it
shopt -s histappend (3 Replies)
Hello for all,
I am testing the behavior of a 32 bit application running on Solaris 5.10 (SPARC), and realize it reaches 4GB of memory and then crashes.
It doesn't matter the amount of used memory as application is intended to perform many transactions; rather, what I want to achieve is to... (2 Replies)