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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-26 14:51:14 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-26 14:51:14 -0800 |
commit | a6590b9f01dca2d45a38b8387f59812c44f68a2f (patch) | |
tree | cabc65bb93d92763538d04cdfba1e62eaffc8a76 | |
parent | 1085db4aa68ce960f8c987a67a104ba834022fef (diff) | |
parent | 8afd500cb52a5d00bab4525dd5a560d199f979b9 (diff) | |
download | kernel_goldelico_gta04-a6590b9f01dca2d45a38b8387f59812c44f68a2f.zip kernel_goldelico_gta04-a6590b9f01dca2d45a38b8387f59812c44f68a2f.tar.gz kernel_goldelico_gta04-a6590b9f01dca2d45a38b8387f59812c44f68a2f.tar.bz2 |
Merge tag 'upstream-3.9-rc1' of git://git.infradead.org/linux-ubifs
Pull ubifs updates from Artem Bityutskiy:
"It's been quite silent and we have only a couple of bug-fixes for the
orphans handling code plus one cosmetic change."
* tag 'upstream-3.9-rc1' of git://git.infradead.org/linux-ubifs:
UBIFS: fix double free of ubifs_orphan objects
UBIFS: fix use of freed ubifs_orphan objects
UBIFS: rename random32() to prandom_u32()
-rw-r--r-- | fs/ubifs/debug.c | 8 | ||||
-rw-r--r-- | fs/ubifs/lpt_commit.c | 14 | ||||
-rw-r--r-- | fs/ubifs/orphan.c | 12 | ||||
-rw-r--r-- | fs/ubifs/tnc_commit.c | 2 | ||||
-rw-r--r-- | fs/ubifs/ubifs.h | 6 |
5 files changed, 27 insertions, 15 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/orphan.c b/fs/ubifs/orphan.c index 769701c..ba32da3 100644 --- a/fs/ubifs/orphan.c +++ b/fs/ubifs/orphan.c @@ -126,13 +126,14 @@ void ubifs_delete_orphan(struct ubifs_info *c, ino_t inum) else if (inum > o->inum) p = p->rb_right; else { - if (o->dnext) { + if (o->del) { spin_unlock(&c->orphan_lock); dbg_gen("deleted twice ino %lu", (unsigned long)inum); return; } - if (o->cnext) { + if (o->cmt) { + o->del = 1; o->dnext = c->orph_dnext; c->orph_dnext = o; spin_unlock(&c->orphan_lock); @@ -172,7 +173,9 @@ int ubifs_orphan_start_commit(struct ubifs_info *c) last = &c->orph_cnext; list_for_each_entry(orphan, &c->orph_new, new_list) { ubifs_assert(orphan->new); + ubifs_assert(!orphan->cmt); orphan->new = 0; + orphan->cmt = 1; *last = orphan; last = &orphan->cnext; } @@ -299,7 +302,9 @@ static int write_orph_node(struct ubifs_info *c, int atomic) cnext = c->orph_cnext; for (i = 0; i < cnt; i++) { orphan = cnext; + ubifs_assert(orphan->cmt); orph->inos[i] = cpu_to_le64(orphan->inum); + orphan->cmt = 0; cnext = orphan->cnext; orphan->cnext = NULL; } @@ -378,6 +383,7 @@ static int consolidate(struct ubifs_info *c) list_for_each_entry(orphan, &c->orph_list, list) { if (orphan->new) continue; + orphan->cmt = 1; *last = orphan; last = &orphan->cnext; cnt += 1; @@ -442,6 +448,7 @@ static void erase_deleted(struct ubifs_info *c) orphan = dnext; dnext = orphan->dnext; ubifs_assert(!orphan->new); + ubifs_assert(orphan->del); rb_erase(&orphan->rb, &c->orph_tree); list_del(&orphan->list); c->tot_orphans -= 1; @@ -531,6 +538,7 @@ static int insert_dead_orphan(struct ubifs_info *c, ino_t inum) rb_link_node(&orphan->rb, parent, p); rb_insert_color(&orphan->rb, &c->orph_tree); list_add_tail(&orphan->list, &c->orph_list); + orphan->del = 1; orphan->dnext = c->orph_dnext; c->orph_dnext = orphan; dbg_mnt("ino %lu, new %d, tot %d", (unsigned long)inum, 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; } diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index d133c27..b2babce 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -904,6 +904,8 @@ struct ubifs_budget_req { * @dnext: next orphan to delete * @inum: inode number * @new: %1 => added since the last commit, otherwise %0 + * @cmt: %1 => commit pending, otherwise %0 + * @del: %1 => delete pending, otherwise %0 */ struct ubifs_orphan { struct rb_node rb; @@ -912,7 +914,9 @@ struct ubifs_orphan { struct ubifs_orphan *cnext; struct ubifs_orphan *dnext; ino_t inum; - int new; + unsigned new:1; + unsigned cmt:1; + unsigned del:1; }; /** |