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Subject[PATCH 13/29] ubifs: rename random32() to prandom_u32()
Date
Use more preferable function name which implies using a pseudo-random
number generator.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Artem Bityutskiy <dedekind1@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: linux-mtd@lists.infradead.org
---
fs/ubifs/debug.c | 8 ++++----
fs/ubifs/lpt_commit.c | 14 +++++++-------
fs/ubifs/tnc_commit.c | 2 +-
3 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 12817ff..7f60e90 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -2459,7 +2459,7 @@ error_dump:

static inline int chance(unsigned int n, unsigned int out_of)
{
- return !!((random32() % out_of) + 1 <= n);
+ return !!((prandom_u32() % out_of) + 1 <= n);

}

@@ -2477,13 +2477,13 @@ static int power_cut_emulated(struct ubifs_info *c, int lnum, int write)
if (chance(1, 2)) {
d->pc_delay = 1;
/* Fail withing 1 minute */
- delay = random32() % 60000;
+ delay = prandom_u32() % 60000;
d->pc_timeout = jiffies;
d->pc_timeout += msecs_to_jiffies(delay);
ubifs_warn("failing after %lums", delay);
} else {
d->pc_delay = 2;
- delay = random32() % 10000;
+ delay = prandom_u32() % 10000;
/* Fail within 10000 operations */
d->pc_cnt_max = delay;
ubifs_warn("failing after %lu calls", delay);
@@ -2563,7 +2563,7 @@ static int corrupt_data(const struct ubifs_info *c, const void *buf,
unsigned int from, to, ffs = chance(1, 2);
unsigned char *p = (void *)buf;

- from = random32() % (len + 1);
+ from = prandom_u32() % (len + 1);
/* Corruption may only span one max. write unit */
to = min(len, ALIGN(from, c->max_write_size));

diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c
index 9daaeef..4b826ab 100644
--- a/fs/ubifs/lpt_commit.c
+++ b/fs/ubifs/lpt_commit.c
@@ -2007,28 +2007,28 @@ static int dbg_populate_lsave(struct ubifs_info *c)

if (!dbg_is_chk_gen(c))
return 0;
- if (random32() & 3)
+ if (prandom_u32() & 3)
return 0;

for (i = 0; i < c->lsave_cnt; i++)
c->lsave[i] = c->main_first;

list_for_each_entry(lprops, &c->empty_list, list)
- c->lsave[random32() % c->lsave_cnt] = lprops->lnum;
+ c->lsave[prandom_u32() % c->lsave_cnt] = lprops->lnum;
list_for_each_entry(lprops, &c->freeable_list, list)
- c->lsave[random32() % c->lsave_cnt] = lprops->lnum;
+ c->lsave[prandom_u32() % c->lsave_cnt] = lprops->lnum;
list_for_each_entry(lprops, &c->frdi_idx_list, list)
- c->lsave[random32() % c->lsave_cnt] = lprops->lnum;
+ c->lsave[prandom_u32() % c->lsave_cnt] = lprops->lnum;

heap = &c->lpt_heap[LPROPS_DIRTY_IDX - 1];
for (i = 0; i < heap->cnt; i++)
- c->lsave[random32() % c->lsave_cnt] = heap->arr[i]->lnum;
+ c->lsave[prandom_u32() % c->lsave_cnt] = heap->arr[i]->lnum;
heap = &c->lpt_heap[LPROPS_DIRTY - 1];
for (i = 0; i < heap->cnt; i++)
- c->lsave[random32() % c->lsave_cnt] = heap->arr[i]->lnum;
+ c->lsave[prandom_u32() % c->lsave_cnt] = heap->arr[i]->lnum;
heap = &c->lpt_heap[LPROPS_FREE - 1];
for (i = 0; i < heap->cnt; i++)
- c->lsave[random32() % c->lsave_cnt] = heap->arr[i]->lnum;
+ c->lsave[prandom_u32() % c->lsave_cnt] = heap->arr[i]->lnum;

return 1;
}
diff --git a/fs/ubifs/tnc_commit.c b/fs/ubifs/tnc_commit.c
index 523bbad..52a6559 100644
--- a/fs/ubifs/tnc_commit.c
+++ b/fs/ubifs/tnc_commit.c
@@ -683,7 +683,7 @@ static int alloc_idx_lebs(struct ubifs_info *c, int cnt)
c->ilebs[c->ileb_cnt++] = lnum;
dbg_cmt("LEB %d", lnum);
}
- if (dbg_is_chk_index(c) && !(random32() & 7))
+ if (dbg_is_chk_index(c) && !(prandom_u32() & 7))
return -ENOSPC;
return 0;
}
--
1.7.11.7


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