CODEWITHSUNDEEP
clinux-kernelkernelcpu-architecture
drdot
drdot

Reputation: 3347

How to mount the huge tlb (huge page) as a file system?

Here is my machine details (ubuntu):

$uname -a

Linux rex-think 3.13.0-46-generic #76-Ubuntu SMP Thu Feb 26 18:52:13 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

I have enabled huge page in root user with:

$echo 20 > /proc/sys/vm/nr_hugepages

Now I want to mount huge page as a file system and open it for read/write, e.g., using the C API below

#define FILE_NAME "/mnt/hugepages/hello"
fd = open(FILE_NAME, O_CREAT | O_RDWR, 0755);    // writing to huge page using file sys API

But I am not sure how to mount the huge page. In /proc/sys/vm/, I can see

hugetlb_shm_group hugepages_treat_as_movable

but from the description here, I dont think they are the files I am looking for.

Upvotes: 0

Views: 12242

Answers (1)

Santosh A
Santosh A

Reputation: 5361

To mount huge tlp as file system use the below command 

mount -t hugetlbfs nodev /mnt/huge

Upvotes: 3

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