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Differential D22885 Diff 66067 head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c

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head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c

Show First 20 Lines • Show All 1,755 Lines • ▼ Show 20 Lines for (i = 0; i < *rbehind; i++) {
ASSERT(!pmap_page_is_mapped(m)); ASSERT(!pmap_page_is_mapped(m));
ASSERT(db->db_size > PAGE_SIZE); ASSERT(db->db_size > PAGE_SIZE);
bufoff = IDX_TO_OFF(m->pindex) % db->db_size; bufoff = IDX_TO_OFF(m->pindex) % db->db_size;
va = zfs_map_page(m, &sf); va = zfs_map_page(m, &sf);
bcopy((char *)db->db_data + bufoff, va, PAGESIZE); bcopy((char *)db->db_data + bufoff, va, PAGESIZE);
zfs_unmap_page(sf); zfs_unmap_page(sf);
vm_page_valid(m); vm_page_valid(m);
vm_page_lock(m);
if ((m->busy_lock & VPB_BIT_WAITERS) != 0) if ((m->busy_lock & VPB_BIT_WAITERS) != 0)
vm_page_activate(m); vm_page_activate(m);
else else
vm_page_deactivate(m); vm_page_deactivate(m);
vm_page_unlock(m);
vm_page_sunbusy(m); vm_page_sunbusy(m);
} }
*rbehind = i; *rbehind = i;
bufoff = IDX_TO_OFF(ma[0]->pindex) % db->db_size; bufoff = IDX_TO_OFF(ma[0]->pindex) % db->db_size;
pgoff = 0; pgoff = 0;
for (mi = 0, di = 0; mi < count && di < numbufs; ) { for (mi = 0, di = 0; mi < count && di < numbufs; ) {
if (pgoff == 0) { if (pgoff == 0) {
▲ Show 20 Lines • Show All 101 Lines • ▼ Show 20 Lines for (i = 0; i < *rahead; i++) {
bcopy((char *)db->db_data + bufoff, va, tocpy); bcopy((char *)db->db_data + bufoff, va, tocpy);
if (tocpy < PAGESIZE) { if (tocpy < PAGESIZE) {
ASSERT(i == *rahead - 1); ASSERT(i == *rahead - 1);
ASSERT((db->db_size & PAGE_MASK) != 0); ASSERT((db->db_size & PAGE_MASK) != 0);
bzero(va + tocpy, PAGESIZE - tocpy); bzero(va + tocpy, PAGESIZE - tocpy);
} }
zfs_unmap_page(sf); zfs_unmap_page(sf);
vm_page_valid(m); vm_page_valid(m);
vm_page_lock(m);
if ((m->busy_lock & VPB_BIT_WAITERS) != 0) if ((m->busy_lock & VPB_BIT_WAITERS) != 0)
vm_page_activate(m); vm_page_activate(m);
else else
vm_page_deactivate(m); vm_page_deactivate(m);
vm_page_unlock(m);
vm_page_sunbusy(m); vm_page_sunbusy(m);
} }
*rahead = i; *rahead = i;
zfs_vmobject_wunlock(vmobj); zfs_vmobject_wunlock(vmobj);
dmu_buf_rele_array(dbp, numbufs, FTAG); dmu_buf_rele_array(dbp, numbufs, FTAG);
return (0); return (0);
} }
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