cregit-Linux how code gets into the kernel

Release 4.15 net/ceph/msgpool.c

Directory: net/ceph
// SPDX-License-Identifier: GPL-2.0
#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; }

Contributors

PersonTokensPropCommitsCommitProp
Sage Weil8097.56%685.71%
Yehuda Sadeh Weinraub22.44%114.29%
Total82100.00%7100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
Sage Weil50100.00%3100.00%
Total50100.00%3100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Sage Weil81100.00%6100.00%
Total81100.00%6100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Sage Weil26100.00%3100.00%
Total26100.00%3100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Sage Weil8897.78%787.50%
Yehuda Sadeh Weinraub22.22%112.50%
Total90100.00%8100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
Sage Weil6798.53%583.33%
Stephen Rothwell11.47%116.67%
Total68100.00%6100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Sage Weil40897.37%1066.67%
Yehuda Sadeh Weinraub61.43%213.33%
Ilya Dryomov30.72%16.67%
Greg Kroah-Hartman10.24%16.67%
Stephen Rothwell10.24%16.67%
Total419100.00%15100.00%
Directory: net/ceph
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