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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	stable@vger.kernel.org, Alexey Brodkin <abrodkin@synopsys.com>,
	Vineet Gupta <vgupta@synopsys.com>
Subject: [PATCH 4.14 11/44] ARC: Fix CONFIG_SWAP
Date: Mon, 23 Jul 2018 14:24:47 +0200	[thread overview]
Message-ID: <20180723122437.982266643@linuxfoundation.org> (raw)
In-Reply-To: <20180723122437.447870153@linuxfoundation.org>

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Alexey Brodkin <abrodkin@synopsys.com>

commit 6e3761145a9ba3ce267c330b6bff51cf6a057b06 upstream.

swap was broken on ARC due to silly copy-paste issue.

We encode offset from swapcache page in __swp_entry() as (off << 13) but
were not decoding back in __swp_offset() as (off >> 13) - it was still
(off << 13).

This finally fixes swap usage on ARC.

| # mkswap /dev/sda2
|
| # swapon -a -e /dev/sda2
| Adding 500728k swap on /dev/sda2.  Priority:-2 extents:1 across:500728k
|
| # free
|              total       used       free     shared    buffers     cached
| Mem:        765104      13456     751648       4736          8       4736
| -/+ buffers/cache:       8712     756392
| Swap:       500728          0     500728

Cc: stable@vger.kernel.org
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/arc/include/asm/pgtable.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arc/include/asm/pgtable.h
+++ b/arch/arc/include/asm/pgtable.h
@@ -379,7 +379,7 @@ void update_mmu_cache(struct vm_area_str
 
 /* Decode a PTE containing swap "identifier "into constituents */
 #define __swp_type(pte_lookalike)	(((pte_lookalike).val) & 0x1f)
-#define __swp_offset(pte_lookalike)	((pte_lookalike).val << 13)
+#define __swp_offset(pte_lookalike)	((pte_lookalike).val >> 13)
 
 /* NOPs, to keep generic kernel happy */
 #define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })



  parent reply	other threads:[~2018-07-23 12:28 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-23 12:24 [PATCH 4.14 00/44] 4.14.58-stable review Greg Kroah-Hartman
2018-07-23 12:24 ` [PATCH 4.14 01/44] scsi: sd_zbc: Fix variable type and bogus comment Greg Kroah-Hartman
2018-07-23 12:24 ` [PATCH 4.14 04/44] x86/events/intel/ds: Fix bts_interrupt_threshold alignment Greg Kroah-Hartman
2018-07-23 12:24 ` [PATCH 4.14 05/44] x86/MCE: Remove min interval polling limitation Greg Kroah-Hartman
2018-07-23 12:24   ` [4.14,05/44] " Greg Kroah-Hartman
2018-07-23 12:24 ` [PATCH 4.14 06/44] fat: fix memory allocation failure handling of match_strdup() Greg Kroah-Hartman
2018-07-23 12:24 ` [PATCH 4.14 07/44] ALSA: rawmidi: Change resized buffers atomically Greg Kroah-Hartman
2018-07-23 12:24 ` [PATCH 4.14 08/44] ALSA: hda/realtek - Add Panasonic CF-SZ6 headset jack quirk Greg Kroah-Hartman
2018-07-23 12:24 ` [PATCH 4.14 09/44] ALSA: hda: add mute led support for HP ProBook 455 G5 Greg Kroah-Hartman
2018-07-23 12:24 ` [PATCH 4.14 10/44] ARCv2: [plat-hsdk]: Save accl reg pair by default Greg Kroah-Hartman
2018-07-23 12:24 ` Greg Kroah-Hartman [this message]
2018-07-23 12:24 ` [PATCH 4.14 12/44] ARC: configs: Remove CONFIG_INITRAMFS_SOURCE from defconfigs Greg Kroah-Hartman
2018-07-23 12:24 ` [PATCH 4.14 13/44] ARC: mm: allow mprotect to make stack mappings executable Greg Kroah-Hartman
2018-07-23 12:24 ` [PATCH 4.14 14/44] mm: memcg: fix use after free in mem_cgroup_iter() Greg Kroah-Hartman
2018-07-23 12:24 ` [PATCH 4.14 15/44] mm/huge_memory.c: fix data loss when splitting a file pmd Greg Kroah-Hartman
2018-07-23 12:24 ` [PATCH 4.14 16/44] cpufreq: intel_pstate: Register when ACPI PCCH is present Greg Kroah-Hartman
2018-07-23 12:24 ` [PATCH 4.14 17/44] vfio/pci: Fix potential Spectre v1 Greg Kroah-Hartman
2018-07-23 12:24 ` [PATCH 4.14 18/44] vfio/spapr: Use IOMMU pageshift rather than pagesize Greg Kroah-Hartman
2018-07-23 12:24 ` [PATCH 4.14 19/44] stop_machine: Disable preemption when waking two stopper threads Greg Kroah-Hartman
2018-07-23 12:24 ` [PATCH 4.14 21/44] drm/nouveau: Use drm_connector_list_iter_* for iterating connectors Greg Kroah-Hartman
2018-07-23 12:24 ` [PATCH 4.14 22/44] drm/nouveau: Avoid looping through fake MST connectors Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 24/44] ipv4: Return EINVAL when ping_group_range sysctl doesnt map to user ns Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 25/44] ipv6: fix useless rol32 call on hash Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 26/44] ipv6: ila: select CONFIG_DST_CACHE Greg Kroah-Hartman
2018-07-23 12:25   ` Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 27/44] lib/rhashtable: consider param->min_size when setting initial table size Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 28/44] net: diag: Dont double-free TCP_NEW_SYN_RECV sockets in tcp_abort Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 29/44] net: Dont copy pfmemalloc flag in __copy_skb_header() Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 30/44] skbuff: Unconditionally copy pfmemalloc in __skb_clone() Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 31/44] net/ipv4: Set oif in fib_compute_spec_dst Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 32/44] net: phy: fix flag masking in __set_phy_supported Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 33/44] ptp: fix missing break in switch Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 35/44] tg3: Add higher cpu clock for 5762 Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 36/44] hv_netvsc: Fix napi reschedule while receive completion is busy Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 37/44] net/mlx4_en: Dont reuse RX page when XDP is set Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 38/44] net: systemport: Fix CRC forwarding check for SYSTEMPORT Lite Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 39/44] ipv6: make DAD fail with enhanced DAD when nonce length differs Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 40/44] net: usb: asix: replace mii_nway_restart in resume path Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 41/44] alpha: fix osf_wait4() breakage Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 42/44] cxl_getfile(): fix double-iput() on alloc_file() failures Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 43/44] powerpc/powernv: Fix save/restore of SPRG3 on entry/exit from stop (idle) Greg Kroah-Hartman
2018-07-23 12:25 ` [PATCH 4.14 44/44] xhci: Fix perceived dead host due to runtime suspend race with event handler Greg Kroah-Hartman
2018-07-24  7:44 ` [PATCH 4.14 00/44] 4.14.58-stable review Naresh Kamboju
2018-07-24 15:58 ` Guenter Roeck

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