Revision 5befb98b30cce19bdf2221ea48c39f1fec5c4568 authored by Linus Torvalds on 24 August 2013, 18:33:21 UTC, committed by Linus Torvalds on 24 August 2013, 18:33:21 UTC
Pull SCSI fixes from James Bottomley:
 "This is a set of small bug fixes for lpfc and zfcp and a fix for a
  fairly nasty bug in sg where a process which cancels I/O completes in
  a kernel thread which would then try to write back to the now gone
  userspace and end up writing to a random kernel address instead"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  [SCSI] zfcp: remove access control tables interface (keep sysfs files)
  [SCSI] zfcp: fix schedule-inside-lock in scsi_device list loops
  [SCSI] zfcp: fix lock imbalance by reworking request queue locking
  [SCSI] sg: Fix user memory corruption when SG_IO is interrupted by a signal
  [SCSI] lpfc: Don't force CONFIG_GENERIC_CSUM on
2 parent s b0f55f2 + b5dc3c4
Raw File
show_mem.c
/*
 * Generic show_mem() implementation
 *
 * Copyright (C) 2008 Johannes Weiner <hannes@saeurebad.de>
 * All code subject to the GPL version 2.
 */

#include <linux/mm.h>
#include <linux/nmi.h>
#include <linux/quicklist.h>

void show_mem(unsigned int filter)
{
	pg_data_t *pgdat;
	unsigned long total = 0, reserved = 0, shared = 0,
		nonshared = 0, highmem = 0;

	printk("Mem-Info:\n");
	show_free_areas(filter);

	if (filter & SHOW_MEM_FILTER_PAGE_COUNT)
		return;

	for_each_online_pgdat(pgdat) {
		unsigned long i, flags;

		pgdat_resize_lock(pgdat, &flags);
		for (i = 0; i < pgdat->node_spanned_pages; i++) {
			struct page *page;
			unsigned long pfn = pgdat->node_start_pfn + i;

			if (unlikely(!(i % MAX_ORDER_NR_PAGES)))
				touch_nmi_watchdog();

			if (!pfn_valid(pfn))
				continue;

			page = pfn_to_page(pfn);

			if (PageHighMem(page))
				highmem++;

			if (PageReserved(page))
				reserved++;
			else if (page_count(page) == 1)
				nonshared++;
			else if (page_count(page) > 1)
				shared += page_count(page) - 1;

			total++;
		}
		pgdat_resize_unlock(pgdat, &flags);
	}

	printk("%lu pages RAM\n", total);
#ifdef CONFIG_HIGHMEM
	printk("%lu pages HighMem\n", highmem);
#endif
	printk("%lu pages reserved\n", reserved);
	printk("%lu pages shared\n", shared);
	printk("%lu pages non-shared\n", nonshared);
#ifdef CONFIG_QUICKLIST
	printk("%lu pages in pagetable cache\n",
		quicklist_total_size());
#endif
}
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