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Replace a homegrown bdone()/bwait() implementation by the real thing

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This commit is contained in:
Poul-Henning Kamp 2003-08-18 19:47:16 +00:00
parent d49ebea58c
commit 6a4b58230c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=119092
1 changed files with 5 additions and 27 deletions
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32
sys/vm/vnode_pager.c
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@ -74,7 +74,6 @@ __FBSDID("$FreeBSD$");
static void vnode_pager_init(void);
static vm_offset_t vnode_pager_addr(struct vnode *vp, vm_ooffset_t address,
int *run);
static void vnode_pager_iodone(struct buf *bp);
static int vnode_pager_input_smlfs(vm_object_t object, vm_page_t m);
static int vnode_pager_input_old(vm_object_t object, vm_page_t m);
static void vnode_pager_dealloc(vm_object_t);
@ -420,17 +419,6 @@ vnode_pager_addr(vp, address, run)
return rtaddress;
}
/*
* interrupt routine for I/O completion
*/
static void
vnode_pager_iodone(bp)
struct buf *bp;
{
bp->b_flags |= B_DONE;
wakeup(bp);
}
/*
* small block filesystem vnode pager input
*/
@ -440,7 +428,6 @@ vnode_pager_input_smlfs(object, m)
vm_page_t m;
{
int i;
int s;
struct vnode *dp, *vp;
struct buf *bp;
vm_offset_t kva;
@ -477,7 +464,7 @@ vnode_pager_input_smlfs(object, m)
/* build a minimal buffer header */
bp->b_iocmd = BIO_READ;
bp->b_iodone = vnode_pager_iodone;
bp->b_iodone = bdone;
KASSERT(bp->b_rcred == NOCRED, ("leaking read ucred"));
KASSERT(bp->b_wcred == NOCRED, ("leaking write ucred"));
bp->b_rcred = crhold(curthread->td_ucred);
@ -495,11 +482,8 @@ vnode_pager_input_smlfs(object, m)
/* we definitely need to be at splvm here */
s = splvm();
while ((bp->b_flags & B_DONE) == 0) {
tsleep(bp, PVM, "vnsrd", 0);
}
splx(s);
bwait(bp, PVM, "vnsrd");
if ((bp->b_ioflags & BIO_ERROR) != 0)
error = EIO;
@ -650,7 +634,6 @@ vnode_pager_generic_getpages(vp, m, bytecount, reqpage)
int runpg;
int runend;
struct buf *bp;
int s;
int count;
int error = 0;
@ -817,7 +800,7 @@ vnode_pager_generic_getpages(vp, m, bytecount, reqpage)
/* build a minimal buffer header */
bp->b_iocmd = BIO_READ;
bp->b_iodone = vnode_pager_iodone;
bp->b_iodone = bdone;
/* B_PHYS is not set, but it is nice to fill this in */
KASSERT(bp->b_rcred == NOCRED, ("leaking read ucred"));
KASSERT(bp->b_wcred == NOCRED, ("leaking write ucred"));
@ -839,13 +822,8 @@ vnode_pager_generic_getpages(vp, m, bytecount, reqpage)
else
VOP_STRATEGY(bp->b_vp, bp);
s = splvm();
/* we definitely need to be at splvm here */
bwait(bp, PVM, "vnread");
while ((bp->b_flags & B_DONE) == 0) {
tsleep(bp, PVM, "vnread", 0);
}
splx(s);
if ((bp->b_ioflags & BIO_ERROR) != 0)
error = EIO;