diff options
| author | cao <[email protected]> | 2016-10-21 02:24:01 +0800 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2016-10-20 11:24:01 -0700 |
| commit | 5a6765cf8cad21d22dc172b4089b655c9270d16a (patch) | |
| tree | 4f520258b4180d1ab3a30e8f0701e13b019eea82 /module/zfs/dmu.c | |
| parent | 1f72394443f710a0be11232b557b8a698693668d (diff) | |
Fix coverity defects: CID 147472
CID 147472: Type: 'Constant' variable guards dead code
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: cao.xuewen <[email protected]>
Closes #5288
Diffstat (limited to 'module/zfs/dmu.c')
| -rw-r--r-- | module/zfs/dmu.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/module/zfs/dmu.c b/module/zfs/dmu.c index 80185706c..7da49af7b 100644 --- a/module/zfs/dmu.c +++ b/module/zfs/dmu.c @@ -987,6 +987,7 @@ static xuio_stats_t xuio_stats = { atomic_add_64(&xuio_stats.stat.value.ui64, (val)) #define XUIOSTAT_BUMP(stat) XUIOSTAT_INCR(stat, 1) +#ifdef HAVE_UIO_ZEROCOPY int dmu_xuio_init(xuio_t *xuio, int nblk) { @@ -1071,6 +1072,7 @@ dmu_xuio_clear(xuio_t *xuio, int i) ASSERT(i < priv->cnt); priv->bufs[i] = NULL; } +#endif /* HAVE_UIO_ZEROCOPY */ static void xuio_stat_init(void) @@ -1111,7 +1113,9 @@ dmu_read_uio_dnode(dnode_t *dn, uio_t *uio, uint64_t size) { dmu_buf_t **dbp; int numbufs, i, err; +#ifdef HAVE_UIO_ZEROCOPY xuio_t *xuio = NULL; +#endif /* * NB: we could do this block-at-a-time, but it's nice @@ -1132,6 +1136,7 @@ dmu_read_uio_dnode(dnode_t *dn, uio_t *uio, uint64_t size) bufoff = uio->uio_loffset - db->db_offset; tocpy = MIN(db->db_size - bufoff, size); +#ifdef HAVE_UIO_ZEROCOPY if (xuio) { dmu_buf_impl_t *dbi = (dmu_buf_impl_t *)db; arc_buf_t *dbuf_abuf = dbi->db_buf; @@ -1146,10 +1151,10 @@ dmu_read_uio_dnode(dnode_t *dn, uio_t *uio, uint64_t size) XUIOSTAT_BUMP(xuiostat_rbuf_nocopy); else XUIOSTAT_BUMP(xuiostat_rbuf_copied); - } else { + } else +#endif err = uiomove((char *)db->db_data + bufoff, tocpy, UIO_READ, uio); - } if (err) break; |