/*
 *   Copyright (C) Tino Reichardt, 2012
 *
 *   This program is free software;  you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 *   the GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program;  if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/blkdev.h>

#include "jfs_incore.h"
#include "jfs_superblock.h"
#include "jfs_discard.h"
#include "jfs_dmap.h"
#include "jfs_debug.h"


/*
 * NAME:	jfs_issue_discard()
 *
 * FUNCTION:	TRIM the specified block range on device, if supported
 *
 * PARAMETERS:
 *	ip	- pointer to in-core inode
 *	blkno	- starting block number to be trimmed (0..N)
 *	nblocks	- number of blocks to be trimmed
 *
 * RETURN VALUES:
 *	none
 *
 * serialization: IREAD_LOCK(ipbmap) held on entry/exit;
 */
void jfs_issue_discard(struct inode *ip, u64 blkno, u64 nblocks)
{
	struct super_block *sb = ip->i_sb;
	int r = 0;

	r = sb_issue_discard(sb, blkno, nblocks, GFP_NOFS, 0);
	if (unlikely(r != 0)) {
		jfs_err("JFS: sb_issue_discard(%p, %llu, %llu, GFP_NOFS, 0) = %d => failed!",
			sb, (unsigned long long)blkno,
			(unsigned long long)nblocks, r);
	}

	jfs_info("JFS: sb_issue_discard(%p, %llu, %llu, GFP_NOFS, 0) = %d",
		sb, (unsigned long long)blkno,
		(unsigned long long)nblocks, r);

	return;
}

/*
 * NAME:	jfs_ioc_trim()
 *
 * FUNCTION:	attempt to discard (TRIM) all free blocks from the
 *              filesystem.
 *
 * PARAMETERS:
 *	ip	- pointer to in-core inode;
 *	range	- the range, given by user space
 *
 * RETURN VALUES:
 *	0	- success
 *	-EIO	- i/o error
 */
int jfs_ioc_trim(struct inode *ip, struct fstrim_range *range)
{
	struct inode *ipbmap = JFS_SBI(ip->i_sb)->ipbmap;
	struct bmap *bmp = JFS_SBI(ip->i_sb)->bmap;
	struct super_block *sb = ipbmap->i_sb;
	int agno, agno_end;
	u64 start, end, minlen;
	u64 trimmed = 0;

	/**
	 * convert byte values to block size of filesystem:
	 * start:	First Byte to trim
	 * len:		number of Bytes to trim from start
	 * minlen:	minimum extent length in Bytes
	 */
	start = range->start >> sb->s_blocksize_bits;
	end = start + (range->len >> sb->s_blocksize_bits) - 1;
	minlen = range->minlen >> sb->s_blocksize_bits;
	if (minlen == 0)
		minlen = 1;

	if (minlen > bmp->db_agsize ||
	    start >= bmp->db_mapsize ||
	    range->len < sb->s_blocksize)
		return -EINVAL;

	if (end >= bmp->db_mapsize)
		end = bmp->db_mapsize - 1;

	/**
	 * we trim all ag's within the range
	 */
	agno = BLKTOAG(start, JFS_SBI(ip->i_sb));
	agno_end = BLKTOAG(end, JFS_SBI(ip->i_sb));
	while (agno <= agno_end) {
		trimmed += dbDiscardAG(ip, agno, minlen);
		agno++;
	}
	range->len = trimmed << sb->s_blocksize_bits;

	return 0;
}
content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='1a0bee6c1e788218fd1d141db320db970aace7f0'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Sergei Shtylyov &lt;sergei.shtylyov@cogentembedded.com&gt;</td><td class='right'>2017-01-29 15:07:34 +0300</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-01-30 22:05:43 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/sched/act_meta_skbtcindex.c?id=1a0bee6c1e788218fd1d141db320db970aace7f0'>1a0bee6c1e788218fd1d141db320db970aace7f0</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/sched/act_meta_skbtcindex.c?id=1a0bee6c1e788218fd1d141db320db970aace7f0'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=1a0bee6c1e788218fd1d141db320db970aace7f0'>46c4116bc8ef4a7df718516a648597d9e21c15f1</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/sched/act_meta_skbtcindex.c?id=1a0bee6c1e788218fd1d141db320db970aace7f0'>net/sched/act_meta_skbtcindex.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/sched/act_meta_skbtcindex.c?id=63c190429020a9701b42887ac22c28f287f1762f'>63c190429020a9701b42887ac22c28f287f1762f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/sched/act_meta_skbtcindex.c?id=1a0bee6c1e788218fd1d141db320db970aace7f0&amp;id2=63c190429020a9701b42887ac22c28f287f1762f'>diff</a>)</td></tr></table>
<div class='commit-subject'>sh_eth: rename EESIPR bits</div><div class='commit-msg'>Since the  commit  b0ca2a21f769 ("sh_eth: Add support of SH7763 to sh_eth")
the *enum* declaring the EESIPR bits (interrupt mask) went out of sync with
the *enum* declaring the EESR bits (interrupt status) WRT  bit naming  and
formatting. I'd like to restore the consistency by using EESIPR as the bit
name prefix, renaming the *enum* to EESIPR_BIT, and (finally) renaming the
bits according to the available  Renesas SH77{34|63} manuals; additionally,
reconstruct  couple names using  the EESR bit declaration above...

Signed-off-by: Sergei Shtylyov &lt;sergei.shtylyov@cogentembedded.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=1a0bee6c1e788218fd1d141db320db970aace7f0'>Diffstat</a> (limited to 'net/sched/act_meta_skbtcindex.c')</div><table summary='diffstat' class='diffstat'>