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ext2fs: add ext2_getpages().

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Literally copy/pasted from ffs_getpages().

Tested with:	fsx
MFC after:	2 months
This commit is contained in:
Pedro F. Giffuni 2014-09-12 15:49:21 +00:00
parent 44f751a21e
commit 1d0fce9bfe
1 changed files with 47 additions and 2 deletions
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49
sys/fs/ext2fs/ext2_vnops.c
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@ -54,6 +54,7 @@
#include <sys/buf.h>
#include <sys/endian.h>
#include <sys/priv.h>
#include <sys/rwlock.h>
#include <sys/mount.h>
#include <sys/unistd.h>
#include <sys/time.h>
@ -65,9 +66,11 @@
#include <sys/file.h>
#include <vm/vm.h>
#include <vm/vm_page.h>
#include <vm/vm_object.h>
#include <vm/vm_param.h>
#include <vm/vm_extern.h>
#include <vm/vm_object.h>
#include <vm/vm_page.h>
#include <vm/vm_pager.h>
#include <vm/vnode_pager.h>
#include "opt_directio.h"
@ -94,6 +97,7 @@ static int ext2_chown(struct vnode *, uid_t, gid_t, struct ucred *,
static vop_close_t ext2_close;
static vop_create_t ext2_create;
static vop_fsync_t ext2_fsync;
static vop_getpages_t ext2_getpages;
static vop_getattr_t ext2_getattr;
static vop_ioctl_t ext2_ioctl;
static vop_link_t ext2_link;
@ -124,6 +128,7 @@ struct vop_vector ext2_vnodeops = {
.vop_close = ext2_close,
.vop_create = ext2_create,
.vop_fsync = ext2_fsync,
.vop_getpages = ext2_getpages,
.vop_getattr = ext2_getattr,
.vop_inactive = ext2_inactive,
.vop_ioctl = ext2_ioctl,
@ -2058,3 +2063,43 @@ ext2_write(struct vop_write_args *ap)
}
return (error);
}
/*
* get page routine
*/
static int
ext2_getpages( struct vop_getpages_args *ap)
{
int i;
vm_page_t mreq;
int pcount;
pcount = round_page(ap->a_count) / PAGE_SIZE;
mreq = ap->a_m[ap->a_reqpage];
/*
* if ANY DEV_BSIZE blocks are valid on a large filesystem block,
* then the entire page is valid. Since the page may be mapped,
* user programs might reference data beyond the actual end of file
* occuring within the page. We have to zero that data.
*/
VM_OBJECT_WLOCK(mreq->object);
if (mreq->valid) {
if (mreq->valid != VM_PAGE_BITS_ALL)
vm_page_zero_invalid(mreq, TRUE);
for (i = 0; i < pcount; i++) {
if (i != ap->a_reqpage) {
vm_page_lock(ap->a_m[i]);
vm_page_free(ap->a_m[i]);
vm_page_unlock(ap->a_m[i]);
}
}
VM_OBJECT_WUNLOCK(mreq->object);
return VM_PAGER_OK;
}
VM_OBJECT_WUNLOCK(mreq->object);
return vnode_pager_generic_getpages(ap->a_vp, ap->a_m,
ap->a_count,
ap->a_reqpage);
}