xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drbd: Rename "mdev" to "device"

Browse Source 
sed -i -e 's:mdev:device:g'

Signed-off-by: Andreas Gruenbacher <agruen@linbit.com>
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
This commit is contained in:
Andreas Gruenbacher
2011-07-03 13:26:43 +02:00
committed by Philipp Reisner
parent 5476169793
commit b30ab7913b
13 changed files with 3387 additions and 3387 deletions
Download Patch File Download Diff File Expand all files Collapse all files

294
drivers/block/drbd/drbd_bitmap.c
View File

@@ -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);