__zs_unmap_object

Name:__zs_unmap_object

Proto:static void __zs_unmap_object(struct mapping_area *area, struct page *pages[2], int off, int size)

Type:void

Parameter:

Type	Parameter	Name
struct mapping_area *	area
struct page *	pages
int	off
int	size

1212

If mapping mode == ad-only (no copy-out at unmap time) Then Go to out

1215

buf = copy buffer for objects that span pages

1216

buf = buf + ZS_HANDLE_SIZE

1217

size -= ZS_HANDLE_SIZE

1218

off += ZS_HANDLE_SIZE

1220

sizes[0] = PAGE_SIZE - off

1221

sizes[1] = size - sizes[0]

1224

addr = kmap_atomic(pages[0])

1225

memcpy(addr + off, buf, sizes[0])

1226

Prevent people trying to call kunmap_atomic() as if it were kunmap()* kunmap_atomic() should get the return value of kmap_atomic, not the page.(addr)

1227

addr = kmap_atomic(pages[1])

1228

memcpy(addr, buf + sizes[0], sizes[1])

1229

Prevent people trying to call kunmap_atomic() as if it were kunmap()* kunmap_atomic() should get the return value of kmap_atomic, not the page.(addr)

1231

out :

1233

pagefault_enable()

**Caller**
Name	Describe
zs_unmap_object

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