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ioat: cleanup logic in spdk_ioat_submit_copy

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Change-Id: I90614b93e1eb6b7b09ca7a21efe5a782f08a9da6
Signed-off-by: Ziye Yang <ziye.yang@intel.com>
This commit is contained in:
Ziye Yang 2017-01-23 13:30:46 +08:00 committed by Jim Harris
parent 5ee4728d0c
commit 4a5a24d537
1 changed files with 11 additions and 14 deletions
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25
lib/ioat/ioat.c
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@ -593,14 +593,20 @@ spdk_ioat_submit_copy(struct spdk_ioat_chan *ioat, void *cb_arg, spdk_ioat_req_c
vdst = (uint64_t)dst;
vsrc = (uint64_t)src;
vsrc_page = _2MB_PAGE(vsrc);
vdst_page = _2MB_PAGE(vdst);
psrc_page = spdk_vtophys((void *)vsrc_page);
pdst_page = spdk_vtophys((void *)vdst_page);
vdst_page = vsrc_page = 0;
pdst_page = psrc_page = SPDK_VTOPHYS_ERROR;
remaining = nbytes;
while (remaining) {
if (_2MB_PAGE(vsrc) != vsrc_page) {
vsrc_page = _2MB_PAGE(vsrc);
psrc_page = spdk_vtophys((void *)vsrc_page);
}
if (_2MB_PAGE(vdst) != vdst_page) {
vdst_page = _2MB_PAGE(vdst);
pdst_page = spdk_vtophys((void *)vdst_page);
}
op_size = remaining;
op_size = min(op_size, (0x200000 - _2MB_OFFSET(vsrc)));
op_size = min(op_size, (0x200000 - _2MB_OFFSET(vdst)));
@ -619,15 +625,6 @@ spdk_ioat_submit_copy(struct spdk_ioat_chan *ioat, void *cb_arg, spdk_ioat_req_c
vsrc += op_size;
vdst += op_size;
if (_2MB_PAGE(vsrc) != vsrc_page) {
vsrc_page = _2MB_PAGE(vsrc);
psrc_page = spdk_vtophys((void *)vsrc_page);
}
if (_2MB_PAGE(vdst) != vdst_page) {
vdst_page = _2MB_PAGE(vdst);
pdst_page = spdk_vtophys((void *)vdst_page);
}
}
/* Issue null descriptor for null transfer */
if (nbytes == 0) {