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path: root/drivers/block/drbd/drbd_bitmap.c
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Diffstat (limited to 'drivers/block/drbd/drbd_bitmap.c')
-rw-r--r--drivers/block/drbd/drbd_bitmap.c294
1 files changed, 147 insertions, 147 deletions
diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index 49d25cf2f973..001bf43dfc8f 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -113,20 +113,20 @@ struct drbd_bitmap {
};
#define bm_print_lock_info(m) __bm_print_lock_info(m, __func__)
-static void __bm_print_lock_info(struct drbd_device *mdev, const char *func)
+static void __bm_print_lock_info(struct drbd_device *device, const char *func)
{
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
if (!__ratelimit(&drbd_ratelimit_state))
return;
dev_err(DEV, "FIXME %s in %s, bitmap locked for '%s' by %s\n",
- drbd_task_to_thread_name(mdev->tconn, current),
+ drbd_task_to_thread_name(device->tconn, current),
func, b->bm_why ?: "?",
- drbd_task_to_thread_name(mdev->tconn, b->bm_task));
+ drbd_task_to_thread_name(device->tconn, b->bm_task));
}
-void drbd_bm_lock(struct drbd_device *mdev, char *why, enum bm_flag flags)
+void drbd_bm_lock(struct drbd_device *device, char *why, enum bm_flag flags)
{
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
int trylock_failed;
if (!b) {
@@ -138,9 +138,9 @@ void drbd_bm_lock(struct drbd_device *mdev, char *why, enum bm_flag flags)
if (trylock_failed) {
dev_warn(DEV, "%s going to '%s' but bitmap already locked for '%s' by %s\n",
- drbd_task_to_thread_name(mdev->tconn, current),
+ drbd_task_to_thread_name(device->tconn, current),
why, b->bm_why ?: "?",
- drbd_task_to_thread_name(mdev->tconn, b->bm_task));
+ drbd_task_to_thread_name(device->tconn, b->bm_task));
mutex_lock(&b->bm_change);
}
if (BM_LOCKED_MASK & b->bm_flags)
@@ -151,15 +151,15 @@ void drbd_bm_lock(struct drbd_device *mdev, char *why, enum bm_flag flags)
b->bm_task = current;
}
-void drbd_bm_unlock(struct drbd_device *mdev)
+void drbd_bm_unlock(struct drbd_device *device)
{
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
if (!b) {
dev_err(DEV, "FIXME no bitmap in drbd_bm_unlock!?\n");
return;
}
- if (!(BM_LOCKED_MASK & mdev->bitmap->bm_flags))
+ if (!(BM_LOCKED_MASK & device->bitmap->bm_flags))
dev_err(DEV, "FIXME bitmap not locked in bm_unlock\n");
b->bm_flags &= ~BM_LOCKED_MASK;
@@ -211,19 +211,19 @@ static unsigned long bm_page_to_idx(struct page *page)
/* As is very unlikely that the same page is under IO from more than one
* context, we can get away with a bit per page and one wait queue per bitmap.
*/
-static void bm_page_lock_io(struct drbd_device *mdev, int page_nr)
+static void bm_page_lock_io(struct drbd_device *device, int page_nr)
{
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
void *addr = &page_private(b->bm_pages[page_nr]);
wait_event(b->bm_io_wait, !test_and_set_bit(BM_PAGE_IO_LOCK, addr));
}
-static void bm_page_unlock_io(struct drbd_device *mdev, int page_nr)
+static void bm_page_unlock_io(struct drbd_device *device, int page_nr)
{
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
void *addr = &page_private(b->bm_pages[page_nr]);
clear_bit_unlock(BM_PAGE_IO_LOCK, addr);
- wake_up(&mdev->bitmap->bm_io_wait);
+ wake_up(&device->bitmap->bm_io_wait);
}
/* set _before_ submit_io, so it may be reset due to being changed
@@ -242,22 +242,22 @@ static void bm_set_page_need_writeout(struct page *page)
/**
* drbd_bm_mark_for_writeout() - mark a page with a "hint" to be considered for writeout
- * @mdev: DRBD device.
+ * @device: DRBD device.
* @page_nr: the bitmap page to mark with the "hint" flag
*
* From within an activity log transaction, we mark a few pages with these
* hints, then call drbd_bm_write_hinted(), which will only write out changed
* pages which are flagged with this mark.
*/
-void drbd_bm_mark_for_writeout(struct drbd_device *mdev, int page_nr)
+void drbd_bm_mark_for_writeout(struct drbd_device *device, int page_nr)
{
struct page *page;
- if (page_nr >= mdev->bitmap->bm_number_of_pages) {
+ if (page_nr >= device->bitmap->bm_number_of_pages) {
dev_warn(DEV, "BAD: page_nr: %u, number_of_pages: %u\n",
- page_nr, (int)mdev->bitmap->bm_number_of_pages);
+ page_nr, (int)device->bitmap->bm_number_of_pages);
return;
}
- page = mdev->bitmap->bm_pages[page_nr];
+ page = device->bitmap->bm_pages[page_nr];
set_bit(BM_PAGE_HINT_WRITEOUT, &page_private(page));
}
@@ -340,7 +340,7 @@ static void bm_unmap(unsigned long *p_addr)
/*
* actually most functions herein should take a struct drbd_bitmap*, not a
- * struct drbd_device*, but for the debug macros I like to have the mdev around
+ * struct drbd_device*, but for the debug macros I like to have the device around
* to be able to report device specific.
*/
@@ -436,11 +436,11 @@ static struct page **bm_realloc_pages(struct drbd_bitmap *b, unsigned long want)
/*
* called on driver init only. TODO call when a device is created.
- * allocates the drbd_bitmap, and stores it in mdev->bitmap.
+ * allocates the drbd_bitmap, and stores it in device->bitmap.
*/
-int drbd_bm_init(struct drbd_device *mdev)
+int drbd_bm_init(struct drbd_device *device)
{
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
WARN_ON(b != NULL);
b = kzalloc(sizeof(struct drbd_bitmap), GFP_KERNEL);
if (!b)
@@ -449,28 +449,28 @@ int drbd_bm_init(struct drbd_device *mdev)
mutex_init(&b->bm_change);
init_waitqueue_head(&b->bm_io_wait);
- mdev->bitmap = b;
+ device->bitmap = b;
return 0;
}
-sector_t drbd_bm_capacity(struct drbd_device *mdev)
+sector_t drbd_bm_capacity(struct drbd_device *device)
{
- if (!expect(mdev->bitmap))
+ if (!expect(device->bitmap))
return 0;
- return mdev->bitmap->bm_dev_capacity;
+ return device->bitmap->bm_dev_capacity;
}
/* called on driver unload. TODO: call when a device is destroyed.
*/
-void drbd_bm_cleanup(struct drbd_device *mdev)
+void drbd_bm_cleanup(struct drbd_device *device)
{
- if (!expect(mdev->bitmap))
+ if (!expect(device->bitmap))
return;
- bm_free_pages(mdev->bitmap->bm_pages, mdev->bitmap->bm_number_of_pages);
- bm_vk_free(mdev->bitmap->bm_pages, (BM_P_VMALLOCED & mdev->bitmap->bm_flags));
- kfree(mdev->bitmap);
- mdev->bitmap = NULL;
+ bm_free_pages(device->bitmap->bm_pages, device->bitmap->bm_number_of_pages);
+ bm_vk_free(device->bitmap->bm_pages, (BM_P_VMALLOCED & device->bitmap->bm_flags));
+ kfree(device->bitmap);
+ device->bitmap = NULL;
}
/*
@@ -631,9 +631,9 @@ static u64 drbd_md_on_disk_bits(struct drbd_backing_dev *ldev)
* In case this is actually a resize, we copy the old bitmap into the new one.
* Otherwise, the bitmap is initialized to all bits set.
*/
-int drbd_bm_resize(struct drbd_device *mdev, sector_t capacity, int set_new_bits)
+int drbd_bm_resize(struct drbd_device *device, sector_t capacity, int set_new_bits)
{
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
unsigned long bits, words, owords, obits;
unsigned long want, have, onpages; /* number of pages */
struct page **npages, **opages = NULL;
@@ -643,7 +643,7 @@ int drbd_bm_resize(struct drbd_device *mdev, sector_t capacity, int set_new_bits
if (!expect(b))
return -ENOMEM;
- drbd_bm_lock(mdev, "resize", BM_LOCKED_MASK);
+ drbd_bm_lock(device, "resize", BM_LOCKED_MASK);
dev_info(DEV, "drbd_bm_resize called with capacity == %llu\n",
(unsigned long long)capacity);
@@ -678,9 +678,9 @@ int drbd_bm_resize(struct drbd_device *mdev, sector_t capacity, int set_new_bits
*/
words = ALIGN(bits, 64) >> LN2_BPL;
- if (get_ldev(mdev)) {
- u64 bits_on_disk = drbd_md_on_disk_bits(mdev->ldev);
- put_ldev(mdev);
+ if (get_ldev(device)) {
+ u64 bits_on_disk = drbd_md_on_disk_bits(device->ldev);
+ put_ldev(device);
if (bits > bits_on_disk) {
dev_info(DEV, "bits = %lu\n", bits);
dev_info(DEV, "bits_on_disk = %llu\n", bits_on_disk);
@@ -695,7 +695,7 @@ int drbd_bm_resize(struct drbd_device *mdev, sector_t capacity, int set_new_bits
D_ASSERT(b->bm_pages != NULL);
npages = b->bm_pages;
} else {
- if (drbd_insert_fault(mdev, DRBD_FAULT_BM_ALLOC))
+ if (drbd_insert_fault(device, DRBD_FAULT_BM_ALLOC))
npages = NULL;
else
npages = bm_realloc_pages(b, want);
@@ -745,7 +745,7 @@ int drbd_bm_resize(struct drbd_device *mdev, sector_t capacity, int set_new_bits
dev_info(DEV, "resync bitmap: bits=%lu words=%lu pages=%lu\n", bits, words, want);
out:
- drbd_bm_unlock(mdev);
+ drbd_bm_unlock(device);
return err;
}
@@ -757,9 +757,9 @@ int drbd_bm_resize(struct drbd_device *mdev, sector_t capacity, int set_new_bits
*
* maybe bm_set should be atomic_t ?
*/
-unsigned long _drbd_bm_total_weight(struct drbd_device *mdev)
+unsigned long _drbd_bm_total_weight(struct drbd_device *device)
{
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
unsigned long s;
unsigned long flags;
@@ -775,20 +775,20 @@ unsigned long _drbd_bm_total_weight(struct drbd_device *mdev)
return s;
}
-unsigned long drbd_bm_total_weight(struct drbd_device *mdev)
+unsigned long drbd_bm_total_weight(struct drbd_device *device)
{
unsigned long s;
/* if I don't have a disk, I don't know about out-of-sync status */
- if (!get_ldev_if_state(mdev, D_NEGOTIATING))
+ if (!get_ldev_if_state(device, D_NEGOTIATING))
return 0;
- s = _drbd_bm_total_weight(mdev);
- put_ldev(mdev);
+ s = _drbd_bm_total_weight(device);
+ put_ldev(device);
return s;
}
-size_t drbd_bm_words(struct drbd_device *mdev)
+size_t drbd_bm_words(struct drbd_device *device)
{
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
if (!expect(b))
return 0;
if (!expect(b->bm_pages))
@@ -797,9 +797,9 @@ size_t drbd_bm_words(struct drbd_device *mdev)
return b->bm_words;
}
-unsigned long drbd_bm_bits(struct drbd_device *mdev)
+unsigned long drbd_bm_bits(struct drbd_device *device)
{
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
if (!expect(b))
return 0;
@@ -811,10 +811,10 @@ unsigned long drbd_bm_bits(struct drbd_device *mdev)
* bitmap must be locked by drbd_bm_lock.
* currently only used from receive_bitmap.
*/
-void drbd_bm_merge_lel(struct drbd_device *mdev, size_t offset, size_t number,
+void drbd_bm_merge_lel(struct drbd_device *device, size_t offset, size_t number,
unsigned long *buffer)
{
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
unsigned long *p_addr, *bm;
unsigned long word, bits;
unsigned int idx;
@@ -860,10 +860,10 @@ void drbd_bm_merge_lel(struct drbd_device *mdev, size_t offset, size_t number,
/* copy number words from the bitmap starting at offset into the buffer.
* buffer[i] will be little endian unsigned long.
*/
-void drbd_bm_get_lel(struct drbd_device *mdev, size_t offset, size_t number,
+void drbd_bm_get_lel(struct drbd_device *device, size_t offset, size_t number,
unsigned long *buffer)
{
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
unsigned long *p_addr, *bm;
size_t end, do_now;
@@ -897,9 +897,9 @@ void drbd_bm_get_lel(struct drbd_device *mdev, size_t offset, size_t number,
}
/* set all bits in the bitmap */
-void drbd_bm_set_all(struct drbd_device *mdev)
+void drbd_bm_set_all(struct drbd_device *device)
{
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
if (!expect(b))
return;
if (!expect(b->bm_pages))
@@ -913,9 +913,9 @@ void drbd_bm_set_all(struct drbd_device *mdev)
}
/* clear all bits in the bitmap */
-void drbd_bm_clear_all(struct drbd_device *mdev)
+void drbd_bm_clear_all(struct drbd_device *device)
{
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
if (!expect(b))
return;
if (!expect(b->bm_pages))
@@ -928,7 +928,7 @@ void drbd_bm_clear_all(struct drbd_device *mdev)
}
struct bm_aio_ctx {
- struct drbd_device *mdev;
+ struct drbd_device *device;
atomic_t in_flight;
unsigned int done;
unsigned flags;
@@ -943,7 +943,7 @@ static void bm_aio_ctx_destroy(struct kref *kref)
{
struct bm_aio_ctx *ctx = container_of(kref, struct bm_aio_ctx, kref);
- put_ldev(ctx->mdev);
+ put_ldev(ctx->device);
kfree(ctx);
}
@@ -951,8 +951,8 @@ static void bm_aio_ctx_destroy(struct kref *kref)
static void bm_async_io_complete(struct bio *bio, int error)
{
struct bm_aio_ctx *ctx = bio->bi_private;
- struct drbd_device *mdev = ctx->mdev;
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_device *device = ctx->device;
+ struct drbd_bitmap *b = device->bitmap;
unsigned int idx = bm_page_to_idx(bio->bi_io_vec[0].bv_page);
int uptodate = bio_flagged(bio, BIO_UPTODATE);
@@ -983,7 +983,7 @@ static void bm_async_io_complete(struct bio *bio, int error)
dynamic_dev_dbg(DEV, "bitmap page idx %u completed\n", idx);
}
- bm_page_unlock_io(mdev, idx);
+ bm_page_unlock_io(device, idx);
if (ctx->flags & BM_AIO_COPY_PAGES)
mempool_free(bio->bi_io_vec[0].bv_page, drbd_md_io_page_pool);
@@ -992,7 +992,7 @@ static void bm_async_io_complete(struct bio *bio, int error)
if (atomic_dec_and_test(&ctx->in_flight)) {
ctx->done = 1;
- wake_up(&mdev->misc_wait);
+ wake_up(&device->misc_wait);
kref_put(&ctx->kref, &bm_aio_ctx_destroy);
}
}
@@ -1000,23 +1000,23 @@ static void bm_async_io_complete(struct bio *bio, int error)
static void bm_page_io_async(struct bm_aio_ctx *ctx, int page_nr, int rw) __must_hold(local)
{
struct bio *bio = bio_alloc_drbd(GFP_NOIO);
- struct drbd_device *mdev = ctx->mdev;
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_device *device = ctx->device;
+ struct drbd_bitmap *b = device->bitmap;
struct page *page;
unsigned int len;
sector_t on_disk_sector =
- mdev->ldev->md.md_offset + mdev->ldev->md.bm_offset;
+ device->ldev->md.md_offset + device->ldev->md.bm_offset;
on_disk_sector += ((sector_t)page_nr) << (PAGE_SHIFT-9);
/* this might happen with very small
* flexible external meta data device,
* or with PAGE_SIZE > 4k */
len = min_t(unsigned int, PAGE_SIZE,
- (drbd_md_last_sector(mdev->ldev) - on_disk_sector + 1)<<9);
+ (drbd_md_last_sector(device->ldev) - on_disk_sector + 1)<<9);
/* serialize IO on this page */
- bm_page_lock_io(mdev, page_nr);
+ bm_page_lock_io(device, page_nr);
/* before memcpy and submit,
* so it can be redirtied any time */
bm_set_page_unchanged(b->bm_pages[page_nr]);
@@ -1027,7 +1027,7 @@ static void bm_page_io_async(struct bm_aio_ctx *ctx, int page_nr, int rw) __must
bm_store_page_idx(page, page_nr);
} else
page = b->bm_pages[page_nr];
- bio->bi_bdev = mdev->ldev->md_bdev;
+ bio->bi_bdev = device->ldev->md_bdev;
bio->bi_iter.bi_sector = on_disk_sector;
/* bio_add_page of a single page to an empty bio will always succeed,
* according to api. Do we want to assert that? */
@@ -1035,24 +1035,24 @@ static void bm_page_io_async(struct bm_aio_ctx *ctx, int page_nr, int rw) __must
bio->bi_private = ctx;
bio->bi_end_io = bm_async_io_complete;
- if (drbd_insert_fault(mdev, (rw & WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD)) {
+ if (drbd_insert_fault(device, (rw & WRITE) ? DRBD_FAULT_MD_WR : DRBD_FAULT_MD_RD)) {
bio->bi_rw |= rw;
bio_endio(bio, -EIO);
} else {
submit_bio(rw, bio);
/* this should not count as user activity and cause the
* resync to throttle -- see drbd_rs_should_slow_down(). */
- atomic_add(len >> 9, &mdev->rs_sect_ev);
+ atomic_add(len >> 9, &device->rs_sect_ev);
}
}
/*
* bm_rw: read/write the whole bitmap from/to its on disk location.
*/
-static int bm_rw(struct drbd_device *mdev, int rw, unsigned flags, unsigned lazy_writeout_upper_idx) __must_hold(local)
+static int bm_rw(struct drbd_device *device, int rw, unsigned flags, unsigned lazy_writeout_upper_idx) __must_hold(local)
{
struct bm_aio_ctx *ctx;
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
int num_pages, i, count = 0;
unsigned long now;
char ppb[10];
@@ -1072,7 +1072,7 @@ static int bm_rw(struct drbd_device *mdev, int rw, unsigned flags, unsigned lazy
return -ENOMEM;
*ctx = (struct bm_aio_ctx) {
- .mdev = mdev,
+ .device = device,
.in_flight = ATOMIC_INIT(1),
.done = 0,
.flags = flags,
@@ -1080,7 +1080,7 @@ static int bm_rw(struct drbd_device *mdev, int rw, unsigned flags, unsigned lazy
.kref = { ATOMIC_INIT(2) },
};
- if (!get_ldev_if_state(mdev, D_ATTACHING)) { /* put is in bm_aio_ctx_destroy() */
+ if (!get_ldev_if_state(device, D_ATTACHING)) { /* put is in bm_aio_ctx_destroy() */
dev_err(DEV, "ASSERT FAILED: get_ldev_if_state() == 1 in bm_rw()\n");
kfree(ctx);
return -ENODEV;
@@ -1132,7 +1132,7 @@ static int bm_rw(struct drbd_device *mdev, int rw, unsigned flags, unsigned lazy
* "in_flight reached zero, all done" event.
*/
if (!atomic_dec_and_test(&ctx->in_flight))
- wait_until_done_or_force_detached(mdev, mdev->ldev, &ctx->done);
+ wait_until_done_or_force_detached(device, device->ldev, &ctx->done);
else
kref_put(&ctx->kref, &bm_aio_ctx_destroy);
@@ -1144,7 +1144,7 @@ static int bm_rw(struct drbd_device *mdev, int rw, unsigned flags, unsigned lazy
if (ctx->error) {
dev_alert(DEV, "we had at least one MD IO ERROR during bitmap IO\n");
- drbd_chk_io_error(mdev, 1, DRBD_META_IO_ERROR);
+ drbd_chk_io_error(device, 1, DRBD_META_IO_ERROR);
err = -EIO; /* ctx->error ? */
}
@@ -1153,7 +1153,7 @@ static int bm_rw(struct drbd_device *mdev, int rw, unsigned flags, unsigned lazy
now = jiffies;
if (rw == WRITE) {
- drbd_md_flush(mdev);
+ drbd_md_flush(device);
} else /* rw == READ */ {
b->bm_set = bm_count_bits(b);
dev_info(DEV, "recounting of set bits took additional %lu jiffies\n",
@@ -1171,38 +1171,38 @@ static int bm_rw(struct drbd_device *mdev, int rw, unsigned flags, unsigned lazy
/**
* drbd_bm_read() - Read the whole bitmap from its on disk location.
- * @mdev: DRBD device.
+ * @device: DRBD device.
*/
-int drbd_bm_read(struct drbd_device *mdev) __must_hold(local)
+int drbd_bm_read(struct drbd_device *device) __must_hold(local)
{
- return bm_rw(mdev, READ, 0, 0);
+ return bm_rw(device, READ, 0, 0);
}
/**
* drbd_bm_write() - Write the whole bitmap to its on disk location.
- * @mdev: DRBD device.
+ * @device: DRBD device.
*
* Will only write pages that have changed since last IO.
*/
-int drbd_bm_write(struct drbd_device *mdev) __must_hold(local)
+int drbd_bm_write(struct drbd_device *device) __must_hold(local)
{
- return bm_rw(mdev, WRITE, 0, 0);
+ return bm_rw(device, WRITE, 0, 0);
}
/**
* drbd_bm_write_all() - Write the whole bitmap to its on disk location.
- * @mdev: DRBD device.
+ * @device: DRBD device.
*
* Will write all pages.
*/
-int drbd_bm_write_all(struct drbd_device *mdev) __must_hold(local)
+int drbd_bm_write_all(struct drbd_device *device) __must_hold(local)
{
- return bm_rw(mdev, WRITE, BM_WRITE_ALL_PAGES, 0);
+ return bm_rw(device, WRITE, BM_WRITE_ALL_PAGES, 0);
}
/**
* drbd_bm_write_copy_pages() - Write the whole bitmap to its on disk location.
- * @mdev: DRBD device.
+ * @device: DRBD device.
*
* Will only write pages that have changed since last IO.
* In contrast to drbd_bm_write(), this will copy the bitmap pages
@@ -1211,23 +1211,23 @@ int drbd_bm_write_all(struct drbd_device *mdev) __must_hold(local)
* verify is aborted due to a failed peer disk, while local IO continues, or
* pending resync acks are still being processed.
*/
-int drbd_bm_write_copy_pages(struct drbd_device *mdev) __must_hold(local)
+int drbd_bm_write_copy_pages(struct drbd_device *device) __must_hold(local)
{
- return bm_rw(mdev, WRITE, BM_AIO_COPY_PAGES, 0);
+ return bm_rw(device, WRITE, BM_AIO_COPY_PAGES, 0);
}
/**
* drbd_bm_write_hinted() - Write bitmap pages with "hint" marks, if they have changed.
- * @mdev: DRBD device.
+ * @device: DRBD device.
*/
-int drbd_bm_write_hinted(struct drbd_device *mdev) __must_hold(local)
+int drbd_bm_write_hinted(struct drbd_device *device) __must_hold(local)
{
- return bm_rw(mdev, WRITE, BM_AIO_WRITE_HINTED | BM_AIO_COPY_PAGES, 0);
+ return bm_rw(device, WRITE, BM_AIO_WRITE_HINTED | BM_AIO_COPY_PAGES, 0);
}
/**
* drbd_bm_write_page() - Writes a PAGE_SIZE aligned piece of bitmap
- * @mdev: DRBD device.
+ * @device: DRBD device.
* @idx: bitmap page index
*
* We don't want to special case on logical_block_size of the backend device,
@@ -1237,12 +1237,12 @@ int drbd_bm_write_hinted(struct drbd_device *mdev) __must_hold(local)
* In case this becomes an issue on systems with larger PAGE_SIZE,
* we may want to change this again to write 4k aligned 4k pieces.
*/
-int drbd_bm_write_page(struct drbd_device *mdev, unsigned int idx) __must_hold(local)
+int drbd_bm_write_page(struct drbd_device *device, unsigned int idx) __must_hold(local)
{
struct bm_aio_ctx *ctx;
int err;
- if (bm_test_page_unchanged(mdev->bitmap->bm_pages[idx])) {
+ if (bm_test_page_unchanged(device->bitmap->bm_pages[idx])) {
dynamic_dev_dbg(DEV, "skipped bm page write for idx %u\n", idx);
return 0;
}
@@ -1252,7 +1252,7 @@ int drbd_bm_write_page(struct drbd_device *mdev, unsigned int idx) __must_hold(l
return -ENOMEM;
*ctx = (struct bm_aio_ctx) {
- .mdev = mdev,
+ .device = device,
.in_flight = ATOMIC_INIT(1),
.done = 0,
.flags = BM_AIO_COPY_PAGES,
@@ -1260,21 +1260,21 @@ int drbd_bm_write_page(struct drbd_device *mdev, unsigned int idx) __must_hold(l
.kref = { ATOMIC_INIT(2) },
};
- if (!get_ldev_if_state(mdev, D_ATTACHING)) { /* put is in bm_aio_ctx_destroy() */
+ if (!get_ldev_if_state(device, D_ATTACHING)) { /* put is in bm_aio_ctx_destroy() */
dev_err(DEV, "ASSERT FAILED: get_ldev_if_state() == 1 in drbd_bm_write_page()\n");
kfree(ctx);
return -ENODEV;
}
bm_page_io_async(ctx, idx, WRITE_SYNC);
- wait_until_done_or_force_detached(mdev, mdev->ldev, &ctx->done);
+ wait_until_done_or_force_detached(device, device->ldev, &ctx->done);
if (ctx->error)
- drbd_chk_io_error(mdev, 1, DRBD_META_IO_ERROR);
+ drbd_chk_io_error(device, 1, DRBD_META_IO_ERROR);
/* that causes us to detach, so the in memory bitmap will be
* gone in a moment as well. */
- mdev->bm_writ_cnt++;
+ device->bm_writ_cnt++;
err = atomic_read(&ctx->in_flight) ? -EIO : ctx->error;
kref_put(&ctx->kref, &bm_aio_ctx_destroy);
return err;
@@ -1288,10 +1288,10 @@ int drbd_bm_write_page(struct drbd_device *mdev, unsigned int idx) __must_hold(l
*
* this returns a bit number, NOT a sector!
*/
-static unsigned long __bm_find_next(struct drbd_device *mdev, unsigned long bm_fo,
+static unsigned long __bm_find_next(struct drbd_device *device, unsigned long bm_fo,
const int find_zero_bit)
{
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
unsigned long *p_addr;
unsigned long bit_offset;
unsigned i;
@@ -1328,10 +1328,10 @@ static unsigned long __bm_find_next(struct drbd_device *mdev, unsigned long bm_f
return bm_fo;
}
-static unsigned long bm_find_next(struct drbd_device *mdev,
+static unsigned long bm_find_next(struct drbd_device *device,
unsigned long bm_fo, const int find_zero_bit)
{
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
unsigned long i = DRBD_END_OF_BITMAP;
if (!expect(b))
@@ -1341,39 +1341,39 @@ static unsigned long bm_find_next(struct drbd_device *mdev,
spin_lock_irq(&b->bm_lock);
if (BM_DONT_TEST & b->bm_flags)
- bm_print_lock_info(mdev);
+ bm_print_lock_info(device);
- i = __bm_find_next(mdev, bm_fo, find_zero_bit);
+ i = __bm_find_next(device, bm_fo, find_zero_bit);
spin_unlock_irq(&b->bm_lock);
return i;
}
-unsigned long drbd_bm_find_next(struct drbd_device *mdev, unsigned long bm_fo)
+unsigned long drbd_bm_find_next(struct drbd_device *device, unsigned long bm_fo)
{
- return bm_find_next(mdev, bm_fo, 0);
+ return bm_find_next(device, bm_fo, 0);
}
#if 0
/* not yet needed for anything. */
-unsigned long drbd_bm_find_next_zero(struct drbd_device *mdev, unsigned long bm_fo)
+unsigned long drbd_bm_find_next_zero(struct drbd_device *device, unsigned long bm_fo)
{
- return bm_find_next(mdev, bm_fo, 1);
+ return bm_find_next(device, bm_fo, 1);
}
#endif
/* does not spin_lock_irqsave.
* you must take drbd_bm_lock() first */
-unsigned long _drbd_bm_find_next(struct drbd_device *mdev, unsigned long bm_fo)
+unsigned long _drbd_bm_find_next(struct drbd_device *device, unsigned long bm_fo)
{
- /* WARN_ON(!(BM_DONT_SET & mdev->b->bm_flags)); */
- return __bm_find_next(mdev, bm_fo, 0);
+ /* WARN_ON(!(BM_DONT_SET & device->b->bm_flags)); */
+ return __bm_find_next(device, bm_fo, 0);
}
-unsigned long _drbd_bm_find_next_zero(struct drbd_device *mdev, unsigned long bm_fo)
+unsigned long _drbd_bm_find_next_zero(struct drbd_device *device, unsigned long bm_fo)
{
- /* WARN_ON(!(BM_DONT_SET & mdev->b->bm_flags)); */
- return __bm_find_next(mdev, bm_fo, 1);
+ /* WARN_ON(!(BM_DONT_SET & device->b->bm_flags)); */
+ return __bm_find_next(device, bm_fo, 1);
}
/* returns number of bits actually changed.
@@ -1382,10 +1382,10 @@ unsigned long _drbd_bm_find_next_zero(struct drbd_device *mdev, unsigned long bm
* wants bitnr, not sector.
* expected to be called for only a few bits (e - s about BITS_PER_LONG).
* Must hold bitmap lock already. */
-static int __bm_change_bits_to(struct drbd_device *mdev, const unsigned long s,
+static int __bm_change_bits_to(struct drbd_device *device, const unsigned long s,
unsigned long e, int val)
{
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
unsigned long *p_addr = NULL;
unsigned long bitnr;
unsigned int last_page_nr = -1U;
@@ -1431,11 +1431,11 @@ static int __bm_change_bits_to(struct drbd_device *mdev, const unsigned long s,
* for val != 0, we change 0 -> 1, return code positive
* for val == 0, we change 1 -> 0, return code negative
* wants bitnr, not sector */
-static int bm_change_bits_to(struct drbd_device *mdev, const unsigned long s,
+static int bm_change_bits_to(struct drbd_device *device, const unsigned long s,
const unsigned long e, int val)
{
unsigned long flags;
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
int c = 0;
if (!expect(b))
@@ -1445,24 +1445,24 @@ static int bm_change_bits_to(struct drbd_device *mdev, const unsigned long s,
spin_lock_irqsave(&b->bm_lock, flags);
if ((val ? BM_DONT_SET : BM_DONT_CLEAR) & b->bm_flags)
- bm_print_lock_info(mdev);
+ bm_print_lock_info(device);
- c = __bm_change_bits_to(mdev, s, e, val);
+ c = __bm_change_bits_to(device, s, e, val);
spin_unlock_irqrestore(&b->bm_lock, flags);
return c;
}
/* returns number of bits changed 0 -> 1 */
-int drbd_bm_set_bits(struct drbd_device *mdev, const unsigned long s, const unsigned long e)
+int drbd_bm_set_bits(struct drbd_device *device, const unsigned long s, const unsigned long e)
{
- return bm_change_bits_to(mdev, s, e, 1);
+ return bm_change_bits_to(device, s, e, 1);
}
/* returns number of bits changed 1 -> 0 */
-int drbd_bm_clear_bits(struct drbd_device *mdev, const unsigned long s, const unsigned long e)
+int drbd_bm_clear_bits(struct drbd_device *device, const unsigned long s, const unsigned long e)
{
- return -bm_change_bits_to(mdev, s, e, 0);
+ return -bm_change_bits_to(device, s, e, 0);
}
/* sets all bits in full words,
@@ -1494,7 +1494,7 @@ static inline void bm_set_full_words_within_one_page(struct drbd_bitmap *b,
* You must first drbd_bm_lock().
* Can be called to set the whole bitmap in one go.
* Sets bits from s to e _inclusive_. */
-void _drbd_bm_set_bits(struct drbd_device *mdev, const unsigned long s, const unsigned long e)
+void _drbd_bm_set_bits(struct drbd_device *device, const unsigned long s, const unsigned long e)
{
/* First set_bit from the first bit (s)
* up to the next long boundary (sl),
@@ -1504,7 +1504,7 @@ void _drbd_bm_set_bits(struct drbd_device *mdev, const unsigned long s, const un
* Do not use memset, because we must account for changes,
* so we need to loop over the words with hweight() anyways.
*/
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
unsigned long sl = ALIGN(s,BITS_PER_LONG);
unsigned long el = (e+1) & ~((unsigned long)BITS_PER_LONG-1);
int first_page;
@@ -1516,7 +1516,7 @@ void _drbd_bm_set_bits(struct drbd_device *mdev, const unsigned long s, const un
if (e - s <= 3*BITS_PER_LONG) {
/* don't bother; el and sl may even be wrong. */
spin_lock_irq(&b->bm_lock);
- __bm_change_bits_to(mdev, s, e, 1);
+ __bm_change_bits_to(device, s, e, 1);
spin_unlock_irq(&b->bm_lock);
return;
}
@@ -1527,7 +1527,7 @@ void _drbd_bm_set_bits(struct drbd_device *mdev, const unsigned long s, const un
/* bits filling the current long */
if (sl)
- __bm_change_bits_to(mdev, s, sl-1, 1);
+ __bm_change_bits_to(device, s, sl-1, 1);
first_page = sl >> (3 + PAGE_SHIFT);
last_page = el >> (3 + PAGE_SHIFT);
@@ -1539,7 +1539,7 @@ void _drbd_bm_set_bits(struct drbd_device *mdev, const unsigned long s, const un
/* first and full pages, unless first page == last page */
for (page_nr = first_page; page_nr < last_page; page_nr++) {
- bm_set_full_words_within_one_page(mdev->bitmap, page_nr, first_word, last_word);
+ bm_set_full_words_within_one_page(device->bitmap, page_nr, first_word, last_word);
spin_unlock_irq(&b->bm_lock);
cond_resched();
first_word = 0;
@@ -1555,7 +1555,7 @@ void _drbd_bm_set_bits(struct drbd_device *mdev, const unsigned long s, const un
* as we did not allocate it, it is not present in bitmap->bm_pages.
*/
if (last_word)
- bm_set_full_words_within_one_page(mdev->bitmap, last_page, first_word, last_word);
+ bm_set_full_words_within_one_page(device->bitmap, last_page, first_word, last_word);
/* possibly trailing bits.
* example: (e & 63) == 63, el will be e+1.
@@ -1563,7 +1563,7 @@ void _drbd_bm_set_bits(struct drbd_device *mdev, const unsigned long s, const un
* it would trigger an assert in __bm_change_bits_to()
*/
if (el <= e)
- __bm_change_bits_to(mdev, el, e, 1);
+ __bm_change_bits_to(device, el, e, 1);
spin_unlock_irq(&b->bm_lock);
}
@@ -1574,10 +1574,10 @@ void _drbd_bm_set_bits(struct drbd_device *mdev, const unsigned long s, const un
* 0 ... bit not set
* -1 ... first out of bounds access, stop testing for bits!
*/
-int drbd_bm_test_bit(struct drbd_device *mdev, const unsigned long bitnr)
+int drbd_bm_test_bit(struct drbd_device *device, const unsigned long bitnr)
{
unsigned long flags;
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
unsigned long *p_addr;
int i;
@@ -1588,7 +1588,7 @@ int drbd_bm_test_bit(struct drbd_device *mdev, const unsigned long bitnr)
spin_lock_irqsave(&b->bm_lock, flags);
if (BM_DONT_TEST & b->bm_flags)
- bm_print_lock_info(mdev);
+ bm_print_lock_info(device);
if (bitnr < b->bm_bits) {
p_addr = bm_map_pidx(b, bm_bit_to_page_idx(b, bitnr));
i = test_bit_le(bitnr & BITS_PER_PAGE_MASK, p_addr) ? 1 : 0;
@@ -1605,10 +1605,10 @@ int drbd_bm_test_bit(struct drbd_device *mdev, const unsigned long bitnr)
}
/* returns number of bits set in the range [s, e] */
-int drbd_bm_count_bits(struct drbd_device *mdev, const unsigned long s, const unsigned long e)
+int drbd_bm_count_bits(struct drbd_device *device, const unsigned long s, const unsigned long e)
{
unsigned long flags;
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
unsigned long *p_addr = NULL;
unsigned long bitnr;
unsigned int page_nr = -1U;
@@ -1625,7 +1625,7 @@ int drbd_bm_count_bits(struct drbd_device *mdev, const unsigned long s, const un
spin_lock_irqsave(&b->bm_lock, flags);
if (BM_DONT_TEST & b->bm_flags)
- bm_print_lock_info(mdev);
+ bm_print_lock_info(device);
for (bitnr = s; bitnr <= e; bitnr++) {
unsigned int idx = bm_bit_to_page_idx(b, bitnr);
if (page_nr != idx) {
@@ -1660,9 +1660,9 @@ int drbd_bm_count_bits(struct drbd_device *mdev, const unsigned long s, const un
* reference count of some bitmap extent element from some lru instead...
*
*/
-int drbd_bm_e_weight(struct drbd_device *mdev, unsigned long enr)
+int drbd_bm_e_weight(struct drbd_device *device, unsigned long enr)
{
- struct drbd_bitmap *b = mdev->bitmap;
+ struct drbd_bitmap *b = device->bitmap;
int count, s, e;
unsigned long flags;
unsigned long *p_addr, *bm;
@@ -1674,7 +1674,7 @@ int drbd_bm_e_weight(struct drbd_device *mdev, unsigned long enr)
spin_lock_irqsave(&b->bm_lock, flags);
if (BM_DONT_TEST & b->bm_flags)
- bm_print_lock_info(mdev);
+ bm_print_lock_info(device);
s = S2W(enr);
e = min((size_t)S2W(enr+1), b->bm_words);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 13:18:04 +0000