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authorLinus Torvalds <torvalds@linux-foundation.org>2019-07-12 01:17:41 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-07-12 01:17:41 +0300
commit1f7563f743d7081710a9d186a8b203997d09f383 (patch)
tree55091227fb177f25c45f33dfb5f0b2a5e22ccfa7 /drivers/staging
parentba6d10ab8014ac10d25ca513352b6665e73b5785 (diff)
parent3e99b3b13a1fc8f7354edaee4c04f73a07faba69 (diff)
downloadlinux-1f7563f743d7081710a9d186a8b203997d09f383.tar.xz
Merge tag 'scsi-sg' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI scatter-gather list updates from James Bottomley: "This topic branch covers a fundamental change in how our sg lists are allocated to make mq more efficient by reducing the size of the preallocated sg list. This necessitates a large number of driver changes because the previous guarantee that if a driver specified SG_ALL as the size of its scatter list, it would get a non-chained list and didn't need to bother with scatterlist iterators is now broken and every driver *must* use scatterlist iterators. This was broken out as a separate topic because we need to convert all the drivers before pulling the trigger and unconverted drivers kept being found, necessitating a rebase" * tag 'scsi-sg' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (21 commits) scsi: core: don't preallocate small SGL in case of NO_SG_CHAIN scsi: lib/sg_pool.c: clear 'first_chunk' in case of no preallocation scsi: core: avoid preallocating big SGL for data scsi: core: avoid preallocating big SGL for protection information scsi: lib/sg_pool.c: improve APIs for allocating sg pool scsi: esp: use sg helper to iterate over scatterlist scsi: NCR5380: use sg helper to iterate over scatterlist scsi: wd33c93: use sg helper to iterate over scatterlist scsi: ppa: use sg helper to iterate over scatterlist scsi: pcmcia: nsp_cs: use sg helper to iterate over scatterlist scsi: imm: use sg helper to iterate over scatterlist scsi: aha152x: use sg helper to iterate over scatterlist scsi: s390: zfcp_fc: use sg helper to iterate over scatterlist scsi: staging: unisys: visorhba: use sg helper to iterate over scatterlist scsi: usb: image: microtek: use sg helper to iterate over scatterlist scsi: pmcraid: use sg helper to iterate over scatterlist scsi: ipr: use sg helper to iterate over scatterlist scsi: mvumi: use sg helper to iterate over scatterlist scsi: lpfc: use sg helper to iterate over scatterlist scsi: advansys: use sg helper to iterate over scatterlist ...
Diffstat (limited to 'drivers/staging')
-rw-r--r--drivers/staging/unisys/visorhba/visorhba_main.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/staging/unisys/visorhba/visorhba_main.c b/drivers/staging/unisys/visorhba/visorhba_main.c
index 2dad36a05518..dd979ee4dcf1 100644
--- a/drivers/staging/unisys/visorhba/visorhba_main.c
+++ b/drivers/staging/unisys/visorhba/visorhba_main.c
@@ -871,12 +871,11 @@ static void do_scsi_nolinuxstat(struct uiscmdrsp *cmdrsp,
return;
}
- sg = scsi_sglist(scsicmd);
- for (i = 0; i < scsi_sg_count(scsicmd); i++) {
- this_page_orig = kmap_atomic(sg_page(sg + i));
+ scsi_for_each_sg(scsicmd, sg, scsi_sg_count(scsicmd), i) {
+ this_page_orig = kmap_atomic(sg_page(sg));
this_page = (void *)((unsigned long)this_page_orig |
- sg[i].offset);
- memcpy(this_page, buf + bufind, sg[i].length);
+ sg->offset);
+ memcpy(this_page, buf + bufind, sg->length);
kunmap_atomic(this_page_orig);
}
kfree(buf);