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darwin-pageout-limit-to-filesize-20040405

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FIXES 3870

previously we weren't limiting to file size, now we are
This commit is contained in:
Chaskiel M Grundman 2004-04-05 07:21:33 +00:00 committed by Derrick Brashear
parent 1f5b66ecaa
commit 3e45fd8591
1 changed files with 16 additions and 2 deletions
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18
src/afs/DARWIN/osi_vnodeops.c
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@ -576,6 +576,7 @@ afs_vop_pageout(ap)
struct iovec aiov;
struct uio *uio = &auio;
int nocommit = flags & UPL_NOCOMMIT;
int iosize;
int code;
struct vcache *tvc = VTOAFS(vp);
@ -593,7 +594,7 @@ afs_vop_pageout(ap)
}
#if 1
{
int lbn, iosize, s;
int lbn, s;
struct buf *bp;
int biosize = DEV_BSIZE;
@ -642,6 +643,19 @@ afs_vop_pageout(ap)
if (f_offset & PAGE_MASK)
panic("afs_vop_pageout: offset not page aligned");
/* size will always be a multiple of PAGE_SIZE */
/* pageout isn't supposed to extend files */
if (f_offset + size > tvc->m.Length)
iosize = tvc->m.Length - f_offset;
else
iosize = size;
if (size > (iosize + (PAGE_SIZE - 1)) & ~PAGE_MASK && !nocommit) {
int iosize_rnd=(iosize + (PAGE_SIZE - 1)) & ~PAGE_MASK;
kernel_upl_abort_range(pl, pl_offset + iosize_rnd,
size - iosize_rnd,
UPL_ABORT_FREE_ON_EMPTY);
}
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_offset = f_offset;
@ -650,7 +664,7 @@ afs_vop_pageout(ap)
auio.uio_procp = NULL;
kernel_upl_map(kernel_map, pl, &ioaddr);
ioaddr += pl_offset;
auio.uio_resid = aiov.iov_len = size;
auio.uio_resid = aiov.iov_len = iosize;
aiov.iov_base = (caddr_t) ioaddr;
#if 1 /* USV [ */
{