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drbd: drbd_bm_ALe_set_all(): Remove unused function

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Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Andreas Gruenbacher 2011-12-30 00:28:23 +01:00 • committed by Philipp Reisner
parent 69b6a3b159
commit 1a3cde4406
2 changed files with 0 additions and 48 deletions
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46
drivers/block/drbd/drbd_bitmap.c
View file

@ -1661,49 +1661,3 @@ int drbd_bm_e_weight(struct drbd_conf *mdev, unsigned long enr)
spin_unlock_irqrestore(&b->bm_lock, flags); spin_unlock_irqrestore(&b->bm_lock, flags);
return count; return count;
} }
/* Set all bits covered by the AL-extent al_enr.
* Returns number of bits changed. */
unsigned long drbd_bm_ALe_set_all(struct drbd_conf *mdev, unsigned long al_enr)
{
struct drbd_bitmap *b = mdev->bitmap;
unsigned long *p_addr, *bm;
unsigned long weight;
unsigned long s, e;
int count, i, do_now;
if (!expect(b))
return 0;
if (!expect(b->bm_pages))
return 0;
spin_lock_irq(&b->bm_lock);
if (BM_DONT_SET & b->bm_flags)
bm_print_lock_info(mdev);
weight = b->bm_set;
s = al_enr * BM_WORDS_PER_AL_EXT;
e = min_t(size_t, s + BM_WORDS_PER_AL_EXT, b->bm_words);
/* assert that s and e are on the same page */
D_ASSERT((e-1) >> (PAGE_SHIFT - LN2_BPL + 3)
== s >> (PAGE_SHIFT - LN2_BPL + 3));
count = 0;
if (s < b->bm_words) {
i = do_now = e-s;
p_addr = bm_map_pidx(b, bm_word_to_page_idx(b, s));
bm = p_addr + MLPP(s);
while (i--) {
count += hweight_long(*bm);
*bm = -1UL;
bm++;
}
bm_unmap(p_addr);
b->bm_set += do_now*BITS_PER_LONG - count;
if (e == b->bm_words)
b->bm_set -= bm_clear_surplus(b);
} else {
dev_err(DEV, "start offset (%lu) too large in drbd_bm_ALe_set_all\n", s);
}
weight = b->bm_set - weight;
spin_unlock_irq(&b->bm_lock);
return weight;
}

2
drivers/block/drbd/drbd_int.h
View file

@ -1310,8 +1310,6 @@ extern int drbd_bm_read(struct drbd_conf *mdev) __must_hold(local);
extern void drbd_bm_mark_for_writeout(struct drbd_conf *mdev, int page_nr); extern void drbd_bm_mark_for_writeout(struct drbd_conf *mdev, int page_nr);
extern int drbd_bm_write(struct drbd_conf *mdev) __must_hold(local); extern int drbd_bm_write(struct drbd_conf *mdev) __must_hold(local);
extern int drbd_bm_write_hinted(struct drbd_conf *mdev) __must_hold(local); extern int drbd_bm_write_hinted(struct drbd_conf *mdev) __must_hold(local);
extern unsigned long drbd_bm_ALe_set_all(struct drbd_conf *mdev,
unsigned long al_enr);
extern size_t drbd_bm_words(struct drbd_conf *mdev); extern size_t drbd_bm_words(struct drbd_conf *mdev);
extern unsigned long drbd_bm_bits(struct drbd_conf *mdev); extern unsigned long drbd_bm_bits(struct drbd_conf *mdev);
extern sector_t drbd_bm_capacity(struct drbd_conf *mdev); extern sector_t drbd_bm_capacity(struct drbd_conf *mdev);