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Remove UIO_ZEROCOPY functions structures

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The original xuio zero copy functionality has always been unused 
on Linux and FreeBSD.  Remove this disabled code to avoid any
confusion and improve readability.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Matt Macy <mmacy@FreeBSD.org>
Closes #11124
This commit is contained in:
Matthew Macy
2020-10-30 10:00:33 -07:00
committed by GitHub
parent 1199c3e8fb
commit 5fa356ea44
9 changed files with 0 additions and 454 deletions
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include/os/freebsd/spl/sys/uio.h
-21
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@@ -43,27 +43,6 @@ typedef struct uio uio_t;
typedef struct iovec iovec_t;
typedef enum uio_seg uio_seg_t;
typedef enum xuio_type {
UIOTYPE_ASYNCIO,
UIOTYPE_ZEROCOPY
} xuio_type_t;
typedef struct xuio {
uio_t xu_uio;
/* Extended uio fields */
enum xuio_type xu_type; /* What kind of uio structure? */
union {
struct {
int xu_zc_rw;
void *xu_zc_priv;
} xu_zc;
} xu_ext;
} xuio_t;
#define XUIO_XUZC_PRIV(xuio) xuio->xu_ext.xu_zc.xu_zc_priv
#define XUIO_XUZC_RW(xuio) xuio->xu_ext.xu_zc.xu_zc_rw
static __inline int
zfs_uiomove(void *cp, size_t n, enum uio_rw dir, uio_t *uio)
{