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ABD style cleanups

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The commit a6255b7fce removed a few
assertions which help catch errors and improve code readability. It also
duplicated two conditionals, which was unnecessary and made the code
confusing to read. This patch cleans it up.

Reviewed-by: David Quigley <david.quigley@intel.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Isaac Huang <he.huang@intel.com>
Closes #5802
This commit is contained in:
Isaac Huang 2017-02-24 13:05:42 -07:00 committed by Brian Behlendorf
parent 384328e544
commit f7e76821c5
1 changed files with 13 additions and 12 deletions
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25
module/zfs/vdev_raidz.c
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@ -591,20 +591,20 @@ vdev_raidz_generate_parity_pq(raidz_map_t *rm)
ccnt = rm->rm_col[c].rc_size / sizeof (p[0]);
if (c == rm->rm_firstdatacol) {
ASSERT(ccnt == pcnt || ccnt == 0);
abd_copy_to_buf(p, src, rm->rm_col[c].rc_size);
(void) memcpy(q, p, rm->rm_col[c].rc_size);
} else {
struct pqr_struct pqr = { p, q, NULL };
(void) abd_iterate_func(src, 0, rm->rm_col[c].rc_size,
vdev_raidz_pq_func, &pqr);
}
if (c == rm->rm_firstdatacol) {
for (i = ccnt; i < pcnt; i++) {
p[i] = 0;
q[i] = 0;
}
} else {
struct pqr_struct pqr = { p, q, NULL };
ASSERT(ccnt <= pcnt);
(void) abd_iterate_func(src, 0, rm->rm_col[c].rc_size,
vdev_raidz_pq_func, &pqr);
/*
* Treat short columns as though they are full of 0s.
@ -639,22 +639,23 @@ vdev_raidz_generate_parity_pqr(raidz_map_t *rm)
ccnt = rm->rm_col[c].rc_size / sizeof (p[0]);
if (c == rm->rm_firstdatacol) {
ASSERT(ccnt == pcnt || ccnt == 0);
abd_copy_to_buf(p, src, rm->rm_col[c].rc_size);
(void) memcpy(q, p, rm->rm_col[c].rc_size);
(void) memcpy(r, p, rm->rm_col[c].rc_size);
} else {
struct pqr_struct pqr = { p, q, r };
(void) abd_iterate_func(src, 0, rm->rm_col[c].rc_size,
vdev_raidz_pqr_func, &pqr);
}
if (c == rm->rm_firstdatacol) {
for (i = ccnt; i < pcnt; i++) {
p[i] = 0;
q[i] = 0;
r[i] = 0;
}
} else {
struct pqr_struct pqr = { p, q, r };
ASSERT(ccnt <= pcnt);
(void) abd_iterate_func(src, 0, rm->rm_col[c].rc_size,
vdev_raidz_pqr_func, &pqr);
/*
* Treat short columns as though they are full of 0s.
* Note that there's therefore nothing needed for P.