#include <linux/ceph/ceph_debug.h>

#include <linux/err.h>
#include <linux/sched.h>
#include <linux/types.h>
#include <linux/vmalloc.h>

#include <linux/ceph/messenger.h>
#include <linux/ceph/msgpool.h>

static void *msgpool_alloc(gfp_t gfp_mask, void *arg)
{
	struct ceph_msgpool *pool = arg;
	struct ceph_msg *msg;

	msg = ceph_msg_new(pool->type, pool->front_len, gfp_mask, true);
	if (!msg) {
		dout("msgpool_alloc %s failed\n", pool->name);
	} else {
		dout("msgpool_alloc %s %p\n", pool->name, msg);
		msg->pool = pool;
	}
	return msg;
}

static void msgpool_free(void *element, void *arg)
{
	struct ceph_msgpool *pool = arg;
	struct ceph_msg *msg = element;

	dout("msgpool_release %s %p\n", pool->name, msg);
	msg->pool = NULL;
	ceph_msg_put(msg);
}

int ceph_msgpool_init(struct ceph_msgpool *pool, int type,
		      int front_len, int size, bool blocking, const char *name)
{
	dout("msgpool %s init\n", name);
	pool->type = type;
	pool->front_len = front_len;
	pool->pool = mempool_create(size, msgpool_alloc, msgpool_free, pool);
	if (!pool->pool)
		return -ENOMEM;
	pool->name = name;
	return 0;
}

void ceph_msgpool_destroy(struct ceph_msgpool *pool)
{
	dout("msgpool %s destroy\n", pool->name);
	mempool_destroy(pool->pool);
}

struct ceph_msg *ceph_msgpool_get(struct ceph_msgpool *pool,
				  int front_len)
{
	struct ceph_msg *msg;

	if (front_len > pool->front_len) {
		dout("msgpool_get %s need front %d, pool size is %d\n",
		       pool->name, front_len, pool->front_len);
		WARN_ON(1);

		/* try to alloc a fresh message */
		return ceph_msg_new(pool->type, front_len, GFP_NOFS, false);
	}

	msg = mempool_alloc(pool->pool, GFP_NOFS);
	dout("msgpool_get %s %p\n", pool->name, msg);
	return msg;
}

void ceph_msgpool_put(struct ceph_msgpool *pool, struct ceph_msg *msg)
{
	dout("msgpool_put %s %p\n", pool->name, msg);

	/* reset msg front_len; user may have changed it */
	msg->front.iov_len = pool->front_len;
	msg->hdr.front_len = cpu_to_le32(pool->front_len);

	kref_init(&msg->kref);  /* retake single ref */
	mempool_free(msg, pool->pool);
}
f</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/ceph'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/ceph?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>ceph</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='3efa70d78f218e4c9276b0bac0545e5184c1c47b'/><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>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-02-07 16:29:30 -0500</td></tr>
<tr><th>committer</th><td>David S. Miller &lt;davem@davemloft.net&gt;</td><td class='right'>2017-02-07 16:29:30 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ceph?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>3efa70d78f218e4c9276b0bac0545e5184c1c47b</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/ceph?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>f4abe2f05e173023d2a262afd4aebb1e89fe6985</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/ceph?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>net/ceph</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ceph?id=76e0e70e6452b971a69cc9794ff4a6715c11f7f2'>76e0e70e6452b971a69cc9794ff4a6715c11f7f2</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/ceph?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b&amp;id2=76e0e70e6452b971a69cc9794ff4a6715c11f7f2'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ceph?id=926af6273fc683cd98cd0ce7bf0d04a02eed6742'>926af6273fc683cd98cd0ce7bf0d04a02eed6742</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/ceph?id=3efa70d78f218e4c9276b0bac0545e5184c1c47b&amp;id2=926af6273fc683cd98cd0ce7bf0d04a02eed6742'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net</div><div class='commit-msg'>The conflict was an interaction between a bug fix in the
netvsc driver in 'net' and an optimization of the RX path
in 'net-next'.

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=3efa70d78f218e4c9276b0bac0545e5184c1c47b'>Diffstat</a> (limited to 'net/ceph')</div><table summary='diffstat' class='diffstat'>