fs/xfs/kmem.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * Copyright (c) 2000-2005 Silicon Graphics, Inc.
0004  * All Rights Reserved.
0005  */
0006 #include "xfs.h"
0007 #include "xfs_message.h"
0008 #include "xfs_trace.h"
0009
0010 void *
0011 kmem_alloc(size_t size, xfs_km_flags_t flags)
0012 {
0013     int retries = 0;
0014     gfp_t   lflags = kmem_flags_convert(flags);
0015     void    *ptr;
0016
0017     trace_kmem_alloc(size, flags, _RET_IP_);
0018
0019     do {
0020         ptr = kmalloc(size, lflags);
0021         if (ptr || (flags & KM_MAYFAIL))
0022             return ptr;
0023         if (!(++retries % 100))
0024             xfs_err(NULL,
0025     "%s(%u) possible memory allocation deadlock size %u in %s (mode:0x%x)",
0026                 current->comm, current->pid,
0027                 (unsigned int)size, __func__, lflags);
0028         memalloc_retry_wait(lflags);
0029     } while (1);
0030 }