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authorSage Weil <sage@newdream.net>2010-06-10 17:21:36 -0400
committerSage Weil <sage@newdream.net>2010-08-01 23:11:39 -0400
commitca81f3f6bd759f90a4b940cddda1f8bc61a7725a (patch)
tree77b0f3a45d48303246f26e85b3945916f388805a /fs/ceph/messenger.c
parent3b454c4945c756686e91d77eeefac80cb5d21baf (diff)
ceph: skip if no auth cap in flush_snaps
If we have a capsnap but no auth cap (e.g. because it is migrating to another mds), bail out and do nothing for now. Do NOT remove the capsnap from the flush list. Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph/messenger.c')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-20 22:45:10 -0400
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/*
 * Copyright 2004-2009 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later.
 */

#include <linux/gfp.h>
#include <linux/swap.h>
#include <linux/bootmem.h>
#include <linux/uaccess.h>
#include <asm/bfin-global.h>
#include <asm/pda.h>
#include <asm/cplbinit.h>
#include <asm/early_printk.h>
#include "blackfin_sram.h"

/*
 * ZERO_PAGE is a special page that is used for zero-initialized data and COW.
 * Let the bss do its zero-init magic so we don't have to do it ourselves.
 */
char empty_zero_page[PAGE_SIZE] __attribute__((aligned(PAGE_SIZE)));
EXPORT_SYMBOL(empty_zero_page);

#ifndef CONFIG_EXCEPTION_L1_SCRATCH
#if defined CONFIG_SYSCALL_TAB_L1
__attribute__((l1_data))
#endif
static unsigned long exception_stack[NR_CPUS][1024];
#endif

struct blackfin_pda cpu_pda[NR_CPUS];
EXPORT_SYMBOL(cpu_pda);

/*
 * paging_init() continues the virtual memory environment setup which
 * was begun by the code in arch/head.S.
 * The parameters are pointers to where to stick the starting and ending
 * addresses  of available kernel virtual memory.
 */
void __init paging_init(void)
{
	/*
	 * make sure start_mem is page aligned, otherwise bootmem and
	 * page_alloc get different views of the world
	 */
	unsigned long end_mem = memory_end & PAGE_MASK;

	unsigned long zones_size[MAX_NR_ZONES] = {
		[0] = 0,
		[ZONE_DMA] = (end_mem - PAGE_OFFSET) >> PAGE_SHIFT,
		[ZONE_NORMAL] = 0,
#ifdef CONFIG_HIGHMEM
		[ZONE_HIGHMEM] = 0,
#endif
	};

	/* Set up SFC/DFC registers (user data space) */
	set_fs(KERNEL_DS);

	pr_debug("free_area_init -> start_mem is %#lx virtual_end is %#lx\n",
	        PAGE_ALIGN(memory_start), end_mem);
	free_area_init(zones_size);
}

asmlinkage void __init init_pda(void)
{
	unsigned int cpu = raw_smp_processor_id();

	early_shadow_stamp();

	/* Initialize the PDA fields holding references to other parts
	   of the memory. The content of such memory is still
	   undefined at the time of the call, we are only setting up
	   valid pointers to it. */
	memset(&cpu_pda[cpu], 0, sizeof(cpu_pda[cpu]));

	cpu_pda[0].next = &cpu_pda[1];
	cpu_pda[1].next = &cpu_pda[0];

#ifdef CONFIG_EXCEPTION_L1_SCRATCH
	cpu_pda[cpu].ex_stack = (unsigned long *)(L1_SCRATCH_START + \
					L1_SCRATCH_LENGTH);
#else
	cpu_pda[cpu].ex_stack = exception_stack[cpu + 1];
#endif

#ifdef CONFIG_SMP
	cpu_pda[cpu].imask = 0x1f;
#endif
}

void __init mem_init(void)
{
	unsigned int codek = 0, datak = 0, initk = 0;
	unsigned int reservedpages = 0, freepages = 0;
	unsigned long tmp;
	unsigned long start_mem = memory_start;
	unsigned long end_mem = memory_end;

	end_mem &= PAGE_MASK;
	high_memory = (void *)end_mem;

	start_mem = PAGE_ALIGN(start_mem);
	max_mapnr = num_physpages = MAP_NR(high_memory);
	printk(KERN_DEBUG "Kernel managed physical pages: %lu\n", num_physpages);

	/* This will put all memory onto the freelists. */
	totalram_pages = free_all_bootmem();

	reservedpages = 0;
	for (tmp = 0; tmp < max_mapnr; tmp++)
		if (PageReserved(pfn_to_page(tmp)))
			reservedpages++;
	freepages =  max_mapnr - reservedpages;

	/* do not count in kernel image between _rambase and _ramstart */
	reservedpages -= (_ramstart - _rambase) >> PAGE_SHIFT;
#if (defined(CONFIG_BFIN_EXTMEM_ICACHEABLE) && ANOMALY_05000263)
	reservedpages += (_ramend - memory_end - DMA_UNCACHED_REGION) >> PAGE_SHIFT;
#endif

	codek = (_etext - _stext) >> 10;
	initk = (__init_end - __init_begin) >> 10;
	datak = ((_ramstart - _rambase) >> 10) - codek - initk;

	printk(KERN_INFO
	     "Memory available: %luk/%luk RAM, "
		"(%uk init code, %uk kernel code, %uk data, %uk dma, %uk reserved)\n",
		(unsigned long) freepages << (PAGE_SHIFT-10), _ramend >> 10,
		initk, codek, datak, DMA_UNCACHED_REGION >> 10, (reservedpages << (PAGE_SHIFT-10)));
}

static void __init free_init_pages(const char *what, unsigned long begin, unsigned long end)
{
	unsigned long addr;