The branch stable/12 has been updated by mav:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=748feb192e2a36a9479a9f363d0b621bae614597

commit 748feb192e2a36a9479a9f363d0b621bae614597
Author:     Alexander Motin <[email protected]>
AuthorDate: 2021-03-01 23:35:45 +0000
Commit:     Alexander Motin <[email protected]>
CommitDate: 2021-03-15 02:46:11 +0000

    Optimize out few extra memory accesses.
    
    MFC after:      1 week
    
    (cherry picked from commit a59e2982fe3e6339629cc77fe9d349d60e03a05e)
---
 sys/cam/ctl/ctl_backend_block.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sys/cam/ctl/ctl_backend_block.c b/sys/cam/ctl/ctl_backend_block.c
index abcd8d6e6fae..54026844f695 100644
--- a/sys/cam/ctl/ctl_backend_block.c
+++ b/sys/cam/ctl/ctl_backend_block.c
@@ -418,7 +418,6 @@ ctl_be_block_move_done(union ctl_io *io, bool samethr)
        struct ctl_lba_len_flags *lbalen;
 
        beio = (struct ctl_be_block_io *)PRIV(io)->ptr;
-       be_lun = beio->lun;
 
        DPRINTF("entered\n");
        io->scsiio.kern_rel_offset += io->scsiio.kern_data_len;
@@ -428,7 +427,7 @@ ctl_be_block_move_done(union ctl_io *io, bool samethr)
         */
        if ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0 &&
            (io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE) {
-               lbalen = ARGS(beio->io);
+               lbalen = ARGS(io);
                if (lbalen->flags & CTL_LLF_READ) {
                        ctl_set_success(&io->scsiio);
                } else if (lbalen->flags & CTL_LLF_COMPARE) {
@@ -456,6 +455,7 @@ ctl_be_block_move_done(union ctl_io *io, bool samethr)
         * This move done routine is generally called in the SIM's
         * interrupt context, and therefore we cannot block.
         */
+       be_lun = (struct ctl_be_block_lun *)CTL_BACKEND_LUN(io);
        if (samethr) {
                be_lun->dispatch(be_lun, beio);
        } else {
@@ -1272,7 +1272,7 @@ ctl_be_block_cw_dispatch_ws(struct ctl_be_block_lun 
*be_lun,
        DPRINTF("entered\n");
 
        beio = (struct ctl_be_block_io *)PRIV(io)->ptr;
-       lbalen = ARGS(beio->io);
+       lbalen = ARGS(io);
 
        if (lbalen->flags & ~(SWS_LBDATA | SWS_UNMAP | SWS_ANCHOR | SWS_NDOB) ||
            (lbalen->flags & (SWS_UNMAP | SWS_ANCHOR) && be_lun->unmap == 
NULL)) {
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