mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 18:14:07 +08:00
0b61f8a407
Remove the verbose license text from XFS files and replace them with SPDX tags. This does not change the license of any of the code, merely refers to the common, up-to-date license files in LICENSES/ This change was mostly scripted. fs/xfs/Makefile and fs/xfs/libxfs/xfs_fs.h were modified by hand, the rest were detected and modified by the following command: for f in `git grep -l "GNU General" fs/xfs/` ; do echo $f cat $f | awk -f hdr.awk > $f.new mv -f $f.new $f done And the hdr.awk script that did the modification (including detecting the difference between GPL-2.0 and GPL-2.0+ licenses) is as follows: $ cat hdr.awk BEGIN { hdr = 1.0 tag = "GPL-2.0" str = "" } /^ \* This program is free software/ { hdr = 2.0; next } /any later version./ { tag = "GPL-2.0+" next } /^ \*\// { if (hdr > 0.0) { print "// SPDX-License-Identifier: " tag print str print $0 str="" hdr = 0.0 next } print $0 next } /^ \* / { if (hdr > 1.0) next if (hdr > 0.0) { if (str != "") str = str "\n" str = str $0 next } print $0 next } /^ \*/ { if (hdr > 0.0) next print $0 next } // { if (hdr > 0.0) { if (str != "") str = str "\n" str = str $0 next } print $0 } END { } $ Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
105 lines
2.5 KiB
C
105 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*/
|
|
#include <linux/mm.h>
|
|
#include <linux/sched/mm.h>
|
|
#include <linux/highmem.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/swap.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/backing-dev.h>
|
|
#include "kmem.h"
|
|
#include "xfs_message.h"
|
|
|
|
void *
|
|
kmem_alloc(size_t size, xfs_km_flags_t flags)
|
|
{
|
|
int retries = 0;
|
|
gfp_t lflags = kmem_flags_convert(flags);
|
|
void *ptr;
|
|
|
|
do {
|
|
ptr = kmalloc(size, lflags);
|
|
if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP)))
|
|
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);
|
|
}
|
|
|
|
void *
|
|
kmem_alloc_large(size_t size, xfs_km_flags_t flags)
|
|
{
|
|
unsigned nofs_flag = 0;
|
|
void *ptr;
|
|
gfp_t lflags;
|
|
|
|
ptr = kmem_alloc(size, flags | KM_MAYFAIL);
|
|
if (ptr)
|
|
return ptr;
|
|
|
|
/*
|
|
* __vmalloc() will allocate data pages and auxillary 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.
|
|
*/
|
|
if (flags & KM_NOFS)
|
|
nofs_flag = memalloc_nofs_save();
|
|
|
|
lflags = kmem_flags_convert(flags);
|
|
ptr = __vmalloc(size, lflags, PAGE_KERNEL);
|
|
|
|
if (flags & KM_NOFS)
|
|
memalloc_nofs_restore(nofs_flag);
|
|
|
|
return ptr;
|
|
}
|
|
|
|
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;
|
|
|
|
do {
|
|
ptr = krealloc(old, newsize, lflags);
|
|
if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP)))
|
|
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;
|
|
|
|
do {
|
|
ptr = kmem_cache_alloc(zone, lflags);
|
|
if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP)))
|
|
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);
|
|
}
|