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drbd: send_bitmap_rle_or_plain: Get rid of ugly and useless enum

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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 2010-12-11 18:51:50 +01:00 committed by Philipp Reisner
parent 78fcbdae22
commit f70af118e3
1 changed files with 21 additions and 12 deletions
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33
drivers/block/drbd/drbd_main.c
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@ -2140,9 +2140,15 @@ int fill_bitmap_rle_bits(struct drbd_conf *mdev,
return len;
}
enum { OK, FAILED, DONE }
/**
* send_bitmap_rle_or_plain
*
* Return 0 when done, 1 when another iteration is needed, and a negative error
* code upon failure.
*/
static int
send_bitmap_rle_or_plain(struct drbd_conf *mdev,
struct p_header80 *h, struct bm_xfer_ctx *c)
struct p_header80 *h, struct bm_xfer_ctx *c)
{
struct p_compressed_bm *p = (void*)h;
unsigned long num_words;
@ -2152,7 +2158,7 @@ send_bitmap_rle_or_plain(struct drbd_conf *mdev,
len = fill_bitmap_rle_bits(mdev, p, c);
if (len < 0)
return FAILED;
return -EIO;
if (len) {
DCBP_set_code(p, RLE_VLI_Bits);
@ -2182,11 +2188,14 @@ send_bitmap_rle_or_plain(struct drbd_conf *mdev,
if (c->bit_offset > c->bm_bits)
c->bit_offset = c->bm_bits;
}
ok = ok ? ((len == 0) ? DONE : OK) : FAILED;
if (ok == DONE)
INFO_bm_xfer_stats(mdev, "send", c);
return ok;
if (ok) {
if (len == 0) {
INFO_bm_xfer_stats(mdev, "send", c);
return 0;
} else
return 1;
}
return -EIO;
}
/* See the comment at receive_bitmap() */
@ -2194,7 +2203,7 @@ int _drbd_send_bitmap(struct drbd_conf *mdev)
{
struct bm_xfer_ctx c;
struct p_header80 *p;
int ret;
int err;
ERR_IF(!mdev->bitmap) return false;
@ -2229,11 +2238,11 @@ int _drbd_send_bitmap(struct drbd_conf *mdev)
};
do {
ret = send_bitmap_rle_or_plain(mdev, p, &c);
} while (ret == OK);
err = send_bitmap_rle_or_plain(mdev, p, &c);
} while (err > 0);
free_page((unsigned long) p);
return (ret == DONE);
return err == 0;
}
int drbd_send_bitmap(struct drbd_conf *mdev)