/*
 * QNX4 file system, Linux implementation.
 *
 * Version : 0.2.1
 *
 * Using parts of the xiafs filesystem.
 *
 * History :
 *
 * 28-05-1998 by Richard Frowijn : first release.
 * 20-06-1998 by Frank Denis : basic optimisations.
 * 25-06-1998 by Frank Denis : qnx4_is_free, qnx4_set_bitmap, qnx4_bmap .
 * 28-06-1998 by Frank Denis : qnx4_free_inode (to be fixed) .
 */

#include <linux/buffer_head.h>
#include <linux/bitops.h>
#include "qnx4.h"

unsigned long qnx4_count_free_blocks(struct super_block *sb)
{
	int start = le32_to_cpu(qnx4_sb(sb)->BitMap->di_first_xtnt.xtnt_blk) - 1;
	int total = 0;
	int total_free = 0;
	int offset = 0;
	int size = le32_to_cpu(qnx4_sb(sb)->BitMap->di_size);
	struct buffer_head *bh;

	while (total < size) {
		int bytes = min(size - total, QNX4_BLOCK_SIZE);

		if ((bh = sb_bread(sb, start + offset)) == NULL) {
			printk(KERN_ERR "qnx4: I/O error in counting free blocks\n");
			break;
		}
		total_free += bytes * BITS_PER_BYTE -
				memweight(bh->b_data, bytes);
		brelse(bh);
		total += bytes;
		offset++;
	}

	return total_free;
}
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<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
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<tr><th>author</th><td>Gerd Hoffmann &lt;kraxel@redhat.com&gt;</td><td class='right'>2016-05-31 08:50:47 +0200</td></tr>
<tr><th>committer</th><td>Gerd Hoffmann &lt;kraxel@redhat.com&gt;</td><td class='right'>2016-06-07 10:33:12 +0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=e7cf0963f816fa44190caaf51aeffaa614c340c6'>e7cf0963f816fa44190caaf51aeffaa614c340c6</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=e7cf0963f816fa44190caaf51aeffaa614c340c6'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=e7cf0963f816fa44190caaf51aeffaa614c340c6'>c3cd394a59ecd254f0b4f01cf4dc5e9177cbaddf</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=d3767d49f16b619c1943ce003e1f74817414aeb0'>d3767d49f16b619c1943ce003e1f74817414aeb0</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=e7cf0963f816fa44190caaf51aeffaa614c340c6&amp;id2=d3767d49f16b619c1943ce003e1f74817414aeb0'>diff</a>)</td></tr></table>
<div class='commit-subject'>virtio-gpu: add atomic_commit function</div><div class='commit-msg'>Do modesets first, then call drm_atomic_helper_commit_planes with
active_only = true.  That way the outputs doesn't get disabled
temporarly on atomic commits.

Signed-off-by: Gerd Hoffmann &lt;kraxel@redhat.com&gt;
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