return ERR_PTR(-ENOMEM);
ITERATE_RDEV(mddev, rdev, tmp) {
- if (! rdev->in_sync || rdev->faulty)
+ if (! test_bit(In_sync, &rdev->flags)
+ || test_bit(Faulty, &rdev->flags))
continue;
target = (rdev->sb_offset << 1) + offset + index * (PAGE_SIZE/512);
struct list_head *tmp;
ITERATE_RDEV(mddev, rdev, tmp)
- if (rdev->in_sync && !rdev->faulty)
+ if (test_bit(In_sync, &rdev->flags)
+ && !test_bit(Faulty, &rdev->flags))
md_super_write(mddev, rdev,
(rdev->sb_offset<<1) + offset
+ page->index * (PAGE_SIZE/512),
page);
if (wait)
- wait_event(mddev->sb_wait, atomic_read(&mddev->pending_writes)==0);
+ md_super_wait(mddev);
return 0;
}
if (bitmap->file == NULL)
return write_sb_page(bitmap->mddev, bitmap->offset, page, wait);
+ flush_dcache_page(page); /* make sure visible to anyone reading the file */
+
if (wait)
lock_page(page);
else {
}
}
- ret = page->mapping->a_ops->prepare_write(NULL, page, 0, PAGE_SIZE);
+ ret = page->mapping->a_ops->prepare_write(bitmap->file, page, 0, PAGE_SIZE);
if (!ret)
- ret = page->mapping->a_ops->commit_write(NULL, page, 0,
+ ret = page->mapping->a_ops->commit_write(bitmap->file, page, 0,
PAGE_SIZE);
if (ret) {
unlock_page(page);
/* add to list to be waited for by daemon */
struct page_list *item = mempool_alloc(bitmap->write_pool, GFP_NOIO);
item->page = page;
- page_cache_get(page);
+ get_page(page);
spin_lock(&bitmap->write_lock);
list_add(&item->list, &bitmap->complete_pages);
spin_unlock(&bitmap->write_lock);
struct inode *inode = file->f_mapping->host;
struct page *page = NULL;
loff_t isize = i_size_read(inode);
- unsigned long end_index = isize >> PAGE_CACHE_SHIFT;
+ unsigned long end_index = isize >> PAGE_SHIFT;
- PRINTK("read bitmap file (%dB @ %Lu)\n", (int)PAGE_CACHE_SIZE,
- (unsigned long long)index << PAGE_CACHE_SHIFT);
+ PRINTK("read bitmap file (%dB @ %Lu)\n", (int)PAGE_SIZE,
+ (unsigned long long)index << PAGE_SHIFT);
page = read_cache_page(inode->i_mapping, index,
(filler_t *)inode->i_mapping->a_ops->readpage, file);
goto out;
wait_on_page_locked(page);
if (!PageUptodate(page) || PageError(page)) {
- page_cache_release(page);
+ put_page(page);
page = ERR_PTR(-EIO);
goto out;
}
if (index > end_index) /* we have read beyond EOF */
*bytes_read = 0;
else if (index == end_index) /* possible short read */
- *bytes_read = isize & ~PAGE_CACHE_MASK;
+ *bytes_read = isize & ~PAGE_MASK;
else
- *bytes_read = PAGE_CACHE_SIZE; /* got a full page */
+ *bytes_read = PAGE_SIZE; /* got a full page */
out:
if (IS_ERR(page))
printk(KERN_ALERT "md: bitmap read error: (%dB @ %Lu): %ld\n",
- (int)PAGE_CACHE_SIZE,
- (unsigned long long)index << PAGE_CACHE_SHIFT,
+ (int)PAGE_SIZE,
+ (unsigned long long)index << PAGE_SHIFT,
PTR_ERR(page));
return page;
}
return 0;
}
spin_unlock_irqrestore(&bitmap->lock, flags);
- sb = (bitmap_super_t *)kmap(bitmap->sb_page);
+ sb = (bitmap_super_t *)kmap_atomic(bitmap->sb_page, KM_USER0);
sb->events = cpu_to_le64(bitmap->mddev->events);
if (!bitmap->mddev->degraded)
sb->events_cleared = cpu_to_le64(bitmap->mddev->events);
- kunmap(bitmap->sb_page);
+ kunmap_atomic(sb, KM_USER0);
return write_page(bitmap, bitmap->sb_page, 1);
}
if (!bitmap || !bitmap->sb_page)
return;
- sb = (bitmap_super_t *)kmap(bitmap->sb_page);
+ sb = (bitmap_super_t *)kmap_atomic(bitmap->sb_page, KM_USER0);
printk(KERN_DEBUG "%s: bitmap file superblock:\n", bmname(bitmap));
printk(KERN_DEBUG " magic: %08x\n", le32_to_cpu(sb->magic));
printk(KERN_DEBUG " version: %d\n", le32_to_cpu(sb->version));
printk(KERN_DEBUG " sync size: %llu KB\n",
(unsigned long long)le64_to_cpu(sb->sync_size)/2);
printk(KERN_DEBUG "max write behind: %d\n", le32_to_cpu(sb->write_behind));
- kunmap(bitmap->sb_page);
+ kunmap_atomic(sb, KM_USER0);
}
/* read the superblock from the bitmap file and initialize some bitmap fields */
return err;
}
- sb = (bitmap_super_t *)kmap(bitmap->sb_page);
+ sb = (bitmap_super_t *)kmap_atomic(bitmap->sb_page, KM_USER0);
if (bytes_read < sizeof(*sb)) { /* short read */
printk(KERN_INFO "%s: bitmap file superblock truncated\n",
/* verify that the bitmap-specific fields are valid */
if (sb->magic != cpu_to_le32(BITMAP_MAGIC))
reason = "bad magic";
- else if (sb->version != cpu_to_le32(BITMAP_MAJOR))
+ else if (le32_to_cpu(sb->version) < BITMAP_MAJOR_LO ||
+ le32_to_cpu(sb->version) > BITMAP_MAJOR_HI)
reason = "unrecognized superblock version";
- else if (chunksize < 512 || chunksize > (1024 * 1024 * 4))
- reason = "bitmap chunksize out of range (512B - 4MB)";
+ else if (chunksize < PAGE_SIZE)
+ reason = "bitmap chunksize too small";
else if ((1 << ffz(~chunksize)) != chunksize)
reason = "bitmap chunksize not a power of 2";
- else if (daemon_sleep < 1 || daemon_sleep > 15)
- reason = "daemon sleep period out of range (1-15s)";
+ else if (daemon_sleep < 1 || daemon_sleep > MAX_SCHEDULE_TIMEOUT / HZ)
+ reason = "daemon sleep period out of range";
else if (write_behind > COUNTER_MAX)
reason = "write-behind limit out of range (0 - 16383)";
if (reason) {
bitmap->daemon_lastrun = jiffies;
bitmap->max_write_behind = write_behind;
bitmap->flags |= sb->state;
+ if (le32_to_cpu(sb->version) == BITMAP_MAJOR_HOSTENDIAN)
+ bitmap->flags |= BITMAP_HOSTENDIAN;
bitmap->events_cleared = le64_to_cpu(sb->events_cleared);
if (sb->state & BITMAP_STALE)
bitmap->events_cleared = bitmap->mddev->events;
err = 0;
out:
- kunmap(bitmap->sb_page);
+ kunmap_atomic(sb, KM_USER0);
if (err)
bitmap_print_sb(bitmap);
return err;
spin_unlock_irqrestore(&bitmap->lock, flags);
return;
}
- page_cache_get(bitmap->sb_page);
+ get_page(bitmap->sb_page);
spin_unlock_irqrestore(&bitmap->lock, flags);
- sb = (bitmap_super_t *)kmap(bitmap->sb_page);
+ sb = (bitmap_super_t *)kmap_atomic(bitmap->sb_page, KM_USER0);
switch (op) {
case MASK_SET: sb->state |= bits;
break;
break;
default: BUG();
}
- kunmap(bitmap->sb_page);
- page_cache_release(bitmap->sb_page);
+ kunmap_atomic(sb, KM_USER0);
+ put_page(bitmap->sb_page);
}
/*
while (pages--)
if (map[pages]->index != 0) /* 0 is sb_page, release it below */
- page_cache_release(map[pages]);
+ put_page(map[pages]);
kfree(map);
kfree(attr);
- if (sb_page)
- page_cache_release(sb_page);
+ safe_put_page(sb_page);
}
static void bitmap_stop_daemon(struct bitmap *bitmap);
while ((item = dequeue_page(bitmap))) {
/* don't bother to wait */
- page_cache_release(item->page);
+ put_page(item->page);
mempool_free(item, bitmap->write_pool);
}
/* make sure the page stays cached until it gets written out */
if (! (get_page_attr(bitmap, page) & BITMAP_PAGE_DIRTY))
- page_cache_get(page);
+ get_page(page);
/* set the bit */
kaddr = kmap_atomic(page, KM_USER0);
- set_bit(bit, kaddr);
+ if (bitmap->flags & BITMAP_HOSTENDIAN)
+ set_bit(bit, kaddr);
+ else
+ ext2_set_bit(bit, kaddr);
kunmap_atomic(kaddr, KM_USER0);
PRINTK("set file bit %lu page %lu\n", bit, page->index);
wake_up_process(bitmap->writeback_daemon->tsk));
spin_unlock_irq(&bitmap->write_lock);
} else
- wait_event(bitmap->mddev->sb_wait,
- atomic_read(&bitmap->mddev->pending_writes)==0);
+ md_super_wait(bitmap->mddev);
}
return 0;
}
unsigned long bytes, offset, dummy;
int outofdate;
int ret = -ENOSPC;
+ void *paddr;
chunks = bitmap->chunks;
file = bitmap->file;
if (!bitmap->filemap)
goto out;
- bitmap->filemap_attr = kmalloc(sizeof(long) * num_pages, GFP_KERNEL);
+ bitmap->filemap_attr = kzalloc(sizeof(long) * num_pages, GFP_KERNEL);
if (!bitmap->filemap_attr)
goto out;
- memset(bitmap->filemap_attr, 0, sizeof(long) * num_pages);
-
oldindex = ~0L;
for (i = 0; i < chunks; i++) {
+ int b;
index = file_page_index(i);
bit = file_page_offset(i);
if (index != oldindex) { /* this is a new page, read it in */
/* unmap the old page, we're done with it */
- if (oldpage != NULL)
- kunmap(oldpage);
if (index == 0) {
/*
* if we're here then the superblock page
oldindex = index;
oldpage = page;
- kmap(page);
if (outofdate) {
/*
* if bitmap is out of date, dirty the
* whole page and write it out
*/
- memset(page_address(page) + offset, 0xff,
+ paddr = kmap_atomic(page, KM_USER0);
+ memset(paddr + offset, 0xff,
PAGE_SIZE - offset);
+ kunmap_atomic(paddr, KM_USER0);
ret = write_page(bitmap, page, 1);
if (ret) {
- kunmap(page);
/* release, page not in filemap yet */
- page_cache_release(page);
+ put_page(page);
goto out;
}
}
bitmap->filemap[bitmap->file_pages++] = page;
}
- if (test_bit(bit, page_address(page))) {
+ paddr = kmap_atomic(page, KM_USER0);
+ if (bitmap->flags & BITMAP_HOSTENDIAN)
+ b = test_bit(bit, paddr);
+ else
+ b = ext2_test_bit(bit, paddr);
+ kunmap_atomic(paddr, KM_USER0);
+ if (b) {
/* if the disk bit is set, set the memory bit */
bitmap_set_memory_bits(bitmap, i << CHUNK_BLOCK_SHIFT(bitmap),
((i+1) << (CHUNK_BLOCK_SHIFT(bitmap)) >= start)
ret = 0;
bitmap_mask_state(bitmap, BITMAP_STALE, MASK_UNSET);
- if (page) /* unmap the last page */
- kunmap(page);
-
if (bit_cnt) { /* Kick recovery if any bits were set */
set_bit(MD_RECOVERY_NEEDED, &bitmap->mddev->recovery);
md_wakeup_thread(bitmap->mddev->thread);
int err = 0;
int blocks;
int attr;
+ void *paddr;
if (bitmap == NULL)
return 0;
/* skip this page unless it's marked as needing cleaning */
if (!((attr=get_page_attr(bitmap, page)) & BITMAP_PAGE_CLEAN)) {
if (attr & BITMAP_PAGE_NEEDWRITE) {
- page_cache_get(page);
+ get_page(page);
clear_page_attr(bitmap, page, BITMAP_PAGE_NEEDWRITE);
}
spin_unlock_irqrestore(&bitmap->lock, flags);
default:
bitmap_file_kick(bitmap);
}
- page_cache_release(page);
+ put_page(page);
}
continue;
}
/* grab the new page, sync and release the old */
- page_cache_get(page);
+ get_page(page);
if (lastpage != NULL) {
if (get_page_attr(bitmap, lastpage) & BITMAP_PAGE_NEEDWRITE) {
clear_page_attr(bitmap, lastpage, BITMAP_PAGE_NEEDWRITE);
set_page_attr(bitmap, lastpage, BITMAP_PAGE_NEEDWRITE);
spin_unlock_irqrestore(&bitmap->lock, flags);
}
- kunmap(lastpage);
- page_cache_release(lastpage);
+ put_page(lastpage);
if (err)
bitmap_file_kick(bitmap);
} else
spin_unlock_irqrestore(&bitmap->lock, flags);
lastpage = page;
- kmap(page);
/*
printk("bitmap clean at page %lu\n", j);
*/
-1);
/* clear the bit */
- clear_bit(file_page_offset(j), page_address(page));
+ paddr = kmap_atomic(page, KM_USER0);
+ if (bitmap->flags & BITMAP_HOSTENDIAN)
+ clear_bit(file_page_offset(j), paddr);
+ else
+ ext2_clear_bit(file_page_offset(j), paddr);
+ kunmap_atomic(paddr, KM_USER0);
}
}
spin_unlock_irqrestore(&bitmap->lock, flags);
/* now sync the final page */
if (lastpage != NULL) {
- kunmap(lastpage);
spin_lock_irqsave(&bitmap->lock, flags);
if (get_page_attr(bitmap, lastpage) &BITMAP_PAGE_NEEDWRITE) {
clear_page_attr(bitmap, lastpage, BITMAP_PAGE_NEEDWRITE);
spin_unlock_irqrestore(&bitmap->lock, flags);
}
- page_cache_release(lastpage);
+ put_page(lastpage);
}
return err;
PRINTK("finished page writeback: %p\n", page);
err = PageError(page);
- page_cache_release(page);
+ put_page(page);
if (err) {
printk(KERN_WARNING "%s: bitmap file writeback "
"failed (page %lu): %d\n",
return;
mddev->bitmap = NULL; /* disconnect from the md device */
+ if (mddev->thread)
+ mddev->thread->timeout = MAX_SCHEDULE_TIMEOUT;
bitmap_free(bitmap);
}
BUG_ON(file && mddev->bitmap_offset);
- bitmap = kmalloc(sizeof(*bitmap), GFP_KERNEL);
+ bitmap = kzalloc(sizeof(*bitmap), GFP_KERNEL);
if (!bitmap)
return -ENOMEM;
- memset(bitmap, 0, sizeof(*bitmap));
-
spin_lock_init(&bitmap->lock);
bitmap->mddev = mddev;
#ifdef INJECT_FATAL_FAULT_1
bitmap->bp = NULL;
#else
- bitmap->bp = kmalloc(pages * sizeof(*bitmap->bp), GFP_KERNEL);
+ bitmap->bp = kzalloc(pages * sizeof(*bitmap->bp), GFP_KERNEL);
#endif
err = -ENOMEM;
if (!bitmap->bp)
goto error;
- memset(bitmap->bp, 0, pages * sizeof(*bitmap->bp));
bitmap->flags |= BITMAP_ACTIVE;
if (IS_ERR(bitmap->writeback_daemon))
return PTR_ERR(bitmap->writeback_daemon);
+ mddev->thread->timeout = bitmap->daemon_sleep * HZ;
+
return bitmap_update_sb(bitmap);
error:
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff