diff options
Diffstat (limited to 'drivers/md/md-bitmap.c')
| -rw-r--r-- | drivers/md/md-bitmap.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c index b10c51988c8e..200c5d0f08bf 100644 --- a/drivers/md/md-bitmap.c +++ b/drivers/md/md-bitmap.c @@ -357,11 +357,12 @@ static int read_page(struct file *file, unsigned long index, struct inode *inode = file_inode(file); struct buffer_head *bh; sector_t block, blk_cur; + unsigned long blocksize = i_blocksize(inode); pr_debug("read bitmap file (%dB @ %llu)\n", (int)PAGE_SIZE, (unsigned long long)index << PAGE_SHIFT); - bh = alloc_page_buffers(page, 1<<inode->i_blkbits, false); + bh = alloc_page_buffers(page, blocksize, false); if (!bh) { ret = -ENOMEM; goto out; @@ -383,10 +384,10 @@ static int read_page(struct file *file, unsigned long index, bh->b_blocknr = block; bh->b_bdev = inode->i_sb->s_bdev; - if (count < (1<<inode->i_blkbits)) + if (count < blocksize) count = 0; else - count -= (1<<inode->i_blkbits); + count -= blocksize; bh->b_end_io = end_bitmap_write; bh->b_private = bitmap; @@ -605,8 +606,8 @@ re_read: if (bitmap->cluster_slot >= 0) { sector_t bm_blocks = bitmap->mddev->resync_max_sectors; - sector_div(bm_blocks, - bitmap->mddev->bitmap_info.chunksize >> 9); + bm_blocks = DIV_ROUND_UP_SECTOR_T(bm_blocks, + (bitmap->mddev->bitmap_info.chunksize >> 9)); /* bits to bytes */ bm_blocks = ((bm_blocks+7) >> 3) + sizeof(bitmap_super_t); /* to 4k blocks */ @@ -1367,7 +1368,7 @@ __acquires(bitmap->lock) if (bitmap->bp[page].hijacked || bitmap->bp[page].map == NULL) csize = ((sector_t)1) << (bitmap->chunkshift + - PAGE_COUNTER_SHIFT - 1); + PAGE_COUNTER_SHIFT); else csize = ((sector_t)1) << bitmap->chunkshift; *blocks = csize - (offset & (csize - 1)); @@ -1949,6 +1950,7 @@ out: } EXPORT_SYMBOL_GPL(md_bitmap_load); +/* caller need to free returned bitmap with md_bitmap_free() */ struct bitmap *get_bitmap_from_slot(struct mddev *mddev, int slot) { int rv = 0; @@ -2012,6 +2014,7 @@ int md_bitmap_copy_from_slot(struct mddev *mddev, int slot, md_bitmap_unplug(mddev->bitmap); *low = lo; *high = hi; + md_bitmap_free(bitmap); return rv; } @@ -2615,4 +2618,3 @@ struct attribute_group md_bitmap_group = { .name = "bitmap", .attrs = md_bitmap_attrs, }; - |