mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-25 18:15:11 +07:00
cf085a1b5d
Just fix the typos checkpatch notices... Signed-off-by: Joe Perches <joe@perches.com> Reviewed-by: Bill O'Donnell <billodo@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
139 lines
3.2 KiB
C
139 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*/
|
|
#include "xfs.h"
|
|
#include <linux/backing-dev.h>
|
|
#include "xfs_message.h"
|
|
#include "xfs_trace.h"
|
|
|
|
void *
|
|
kmem_alloc(size_t size, xfs_km_flags_t flags)
|
|
{
|
|
int retries = 0;
|
|
gfp_t lflags = kmem_flags_convert(flags);
|
|
void *ptr;
|
|
|
|
trace_kmem_alloc(size, flags, _RET_IP_);
|
|
|
|
do {
|
|
ptr = kmalloc(size, lflags);
|
|
if (ptr || (flags & KM_MAYFAIL))
|
|
return ptr;
|
|
if (!(++retries % 100))
|
|
xfs_err(NULL,
|
|
"%s(%u) possible memory allocation deadlock size %u in %s (mode:0x%x)",
|
|
current->comm, current->pid,
|
|
(unsigned int)size, __func__, lflags);
|
|
congestion_wait(BLK_RW_ASYNC, HZ/50);
|
|
} while (1);
|
|
}
|
|
|
|
|
|
/*
|
|
* __vmalloc() will allocate data pages and auxiliary structures (e.g.
|
|
* pagetables) with GFP_KERNEL, yet we may be under GFP_NOFS context here. Hence
|
|
* we need to tell memory reclaim that we are in such a context via
|
|
* PF_MEMALLOC_NOFS to prevent memory reclaim re-entering the filesystem here
|
|
* and potentially deadlocking.
|
|
*/
|
|
static void *
|
|
__kmem_vmalloc(size_t size, xfs_km_flags_t flags)
|
|
{
|
|
unsigned nofs_flag = 0;
|
|
void *ptr;
|
|
gfp_t lflags = kmem_flags_convert(flags);
|
|
|
|
if (flags & KM_NOFS)
|
|
nofs_flag = memalloc_nofs_save();
|
|
|
|
ptr = __vmalloc(size, lflags, PAGE_KERNEL);
|
|
|
|
if (flags & KM_NOFS)
|
|
memalloc_nofs_restore(nofs_flag);
|
|
|
|
return ptr;
|
|
}
|
|
|
|
/*
|
|
* Same as kmem_alloc_large, except we guarantee the buffer returned is aligned
|
|
* to the @align_mask. We only guarantee alignment up to page size, we'll clamp
|
|
* alignment at page size if it is larger. vmalloc always returns a PAGE_SIZE
|
|
* aligned region.
|
|
*/
|
|
void *
|
|
kmem_alloc_io(size_t size, int align_mask, xfs_km_flags_t flags)
|
|
{
|
|
void *ptr;
|
|
|
|
trace_kmem_alloc_io(size, flags, _RET_IP_);
|
|
|
|
if (WARN_ON_ONCE(align_mask >= PAGE_SIZE))
|
|
align_mask = PAGE_SIZE - 1;
|
|
|
|
ptr = kmem_alloc(size, flags | KM_MAYFAIL);
|
|
if (ptr) {
|
|
if (!((uintptr_t)ptr & align_mask))
|
|
return ptr;
|
|
kfree(ptr);
|
|
}
|
|
return __kmem_vmalloc(size, flags);
|
|
}
|
|
|
|
void *
|
|
kmem_alloc_large(size_t size, xfs_km_flags_t flags)
|
|
{
|
|
void *ptr;
|
|
|
|
trace_kmem_alloc_large(size, flags, _RET_IP_);
|
|
|
|
ptr = kmem_alloc(size, flags | KM_MAYFAIL);
|
|
if (ptr)
|
|
return ptr;
|
|
return __kmem_vmalloc(size, flags);
|
|
}
|
|
|
|
void *
|
|
kmem_realloc(const void *old, size_t newsize, xfs_km_flags_t flags)
|
|
{
|
|
int retries = 0;
|
|
gfp_t lflags = kmem_flags_convert(flags);
|
|
void *ptr;
|
|
|
|
trace_kmem_realloc(newsize, flags, _RET_IP_);
|
|
|
|
do {
|
|
ptr = krealloc(old, newsize, lflags);
|
|
if (ptr || (flags & KM_MAYFAIL))
|
|
return ptr;
|
|
if (!(++retries % 100))
|
|
xfs_err(NULL,
|
|
"%s(%u) possible memory allocation deadlock size %zu in %s (mode:0x%x)",
|
|
current->comm, current->pid,
|
|
newsize, __func__, lflags);
|
|
congestion_wait(BLK_RW_ASYNC, HZ/50);
|
|
} while (1);
|
|
}
|
|
|
|
void *
|
|
kmem_zone_alloc(kmem_zone_t *zone, xfs_km_flags_t flags)
|
|
{
|
|
int retries = 0;
|
|
gfp_t lflags = kmem_flags_convert(flags);
|
|
void *ptr;
|
|
|
|
trace_kmem_zone_alloc(kmem_cache_size(zone), flags, _RET_IP_);
|
|
do {
|
|
ptr = kmem_cache_alloc(zone, lflags);
|
|
if (ptr || (flags & KM_MAYFAIL))
|
|
return ptr;
|
|
if (!(++retries % 100))
|
|
xfs_err(NULL,
|
|
"%s(%u) possible memory allocation deadlock in %s (mode:0x%x)",
|
|
current->comm, current->pid,
|
|
__func__, lflags);
|
|
congestion_wait(BLK_RW_ASYNC, HZ/50);
|
|
} while (1);
|
|
}
|