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staging: lustre: echo: request pages in batches

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rather than fetch them one by one.

Signed-off-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5278
Reviewed-on: http://review.whamcloud.com/13612
Reviewed-by: Nathaniel Clark <nathaniel.l.clark@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alex Zhuravlev 2016-10-02 22:28:37 -04:00 committed by Greg Kroah-Hartman
parent e10a431b3f
commit 832bd71065
1 changed files with 16 additions and 22 deletions
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38
drivers/staging/lustre/lustre/obdecho/echo_client.c
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@ -1335,7 +1335,7 @@ static int echo_client_prep_commit(const struct lu_env *env,
{
struct obd_ioobj ioo;
struct niobuf_local *lnb;
struct niobuf_remote *rnb;
struct niobuf_remote rnb;
u64 off;
u64 npages, tot_pages;
int i, ret = 0, brw_flags = 0;
@ -1347,9 +1347,7 @@ static int echo_client_prep_commit(const struct lu_env *env,
tot_pages = count >> PAGE_SHIFT;
lnb = kcalloc(npages, sizeof(struct niobuf_local), GFP_NOFS);
rnb = kcalloc(npages, sizeof(struct niobuf_remote), GFP_NOFS);
if (!lnb || !rnb) {
if (!lnb) {
ret = -ENOMEM;
goto out;
}
@ -1361,25 +1359,22 @@ static int echo_client_prep_commit(const struct lu_env *env,
off = offset;
for (; tot_pages; tot_pages -= npages) {
for (; tot_pages > 0; tot_pages -= npages) {
int lpages;
if (tot_pages < npages)
npages = tot_pages;
for (i = 0; i < npages; i++, off += PAGE_SIZE) {
rnb[i].rnb_offset = off;
rnb[i].rnb_len = PAGE_SIZE;
rnb[i].rnb_flags = brw_flags;
}
ioo.ioo_bufcnt = npages;
rnb.rnb_offset = off;
rnb.rnb_len = npages * PAGE_SIZE;
rnb.rnb_flags = brw_flags;
ioo.ioo_bufcnt = 1;
off += npages * PAGE_SIZE;
lpages = npages;
ret = obd_preprw(env, rw, exp, oa, 1, &ioo, rnb, &lpages, lnb);
ret = obd_preprw(env, rw, exp, oa, 1, &ioo, &rnb, &lpages, lnb);
if (ret != 0)
goto out;
LASSERT(lpages == npages);
for (i = 0; i < lpages; i++) {
struct page *page = lnb[i].lnb_page;
@ -1398,17 +1393,17 @@ static int echo_client_prep_commit(const struct lu_env *env,
if (rw == OBD_BRW_WRITE)
echo_client_page_debug_setup(page, rw,
ostid_id(&oa->o_oi),
rnb[i].rnb_offset,
rnb[i].rnb_len);
ostid_id(&oa->o_oi),
lnb[i].lnb_file_offset,
lnb[i].lnb_len);
else
echo_client_page_debug_check(page,
ostid_id(&oa->o_oi),
rnb[i].rnb_offset,
rnb[i].rnb_len);
ostid_id(&oa->o_oi),
lnb[i].lnb_file_offset,
lnb[i].lnb_len);
}
ret = obd_commitrw(env, rw, exp, oa, 1, &ioo, rnb, npages, lnb,
ret = obd_commitrw(env, rw, exp, oa, 1, &ioo, &rnb, npages, lnb,
ret);
if (ret != 0)
goto out;
@ -1420,7 +1415,6 @@ static int echo_client_prep_commit(const struct lu_env *env,
out:
kfree(lnb);
kfree(rnb);
return ret;
}