VM_INSERT_PFN(9) Memory Management in Linux VM_INSERT_PFN(9)NAME
vm_insert_pfn - insert single pfn into user vma
SYNOPSIS
int vm_insert_pfn(struct vm_area_struct * vma, unsigned long addr, unsigned long pfn);
ARGUMENTS
vma
user vma to map to
addr
target user address of this page
pfn
source kernel pfn
DESCRIPTION
Similar to vm_insert_page, this allows drivers to insert individual pages they've allocated into a user vma. Same comments apply.
This function should only be called from a vm_ops->fault handler, and in that case the handler should return NULL.
vma cannot be a COW mapping.
As this is called only for pages that do not currently exist, we do not need to flush old virtual caches or the TLB.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 VM_INSERT_PFN(9)
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DPM_DELREPLICA(3) DPM Library Functions DPM_DELREPLICA(3)NAME
dpm_delreplica - delete a given replica
SYNOPSIS
#include <sys/types.h>
#include "dpm_api.h"
int dpm_delreplica (char *pfn)
DESCRIPTION
dpm_delreplica deletes a given replica. It removes the file from disk, updates the pool free space and removes the replica entry from the
DPNS.
pfn is the Physical File Name for the replica.
RETURN VALUE
This routine returns 0 if the operation was successful or -1 if the operation failed. In the latter case, serrno is set appropriately.
ERRORS
ENOENT The named file or replica does not exist.
EACCES Search permission is denied on a component of the parent directory or the effective user ID does not match the owner of the
file or write permission on the file entry itself is denied.
EFAULT pfn is a NULL pointer.
ENAMETOOLONG The length of pfn exceeds CA_MAXSFNLEN.
SENOSHOST Host unknown.
SENOSSERV Service unknown.
SECOMERR Communication error.
SEE ALSO Castor_limits(4), dpns_addreplica(3), dpns_listreplica(3)LCG $Date: 2006/04/08 14:51:17 $ DPM_DELREPLICA(3)
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