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2012-04-27Btrfs: avoid deadlocks from GFP_KERNEL allocations during btrfs_real_readdirChris Mason1-29/+1
Btrfs has an optimization where it will preallocate dentries during readdir to fill in enough information to open the inode without an extra lookup. But, we're calling d_alloc, which is doing GFP_KERNEL allocations, and that leads to deadlocks because our readdir code has tree locks held. For now, disable this optimization. We'll fix the gfp mask in the next merge window. Signed-off-by: Chris Mason <[email protected]>
2012-04-27spi/spi-bfin5xx: Fix flush of last bit after each spi transferScott Jiang1-1/+4
This patch ensures that the last bit of a transfer gets correctly flushed out of the register. Signed-off-by: Scott Jiang <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-04-27spi/spi-bfin5xx: fix reversed if condition in interrupt modeScott Jiang1-4/+4
This condition is used to determine 8 bits or 16 and 32 bits transfer. Obviously it is reversed. Signed-off-by: Scott Jiang <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-04-27spi/spi_bfin_sport: drop bits_per_word from client dataScott Jiang1-6/+8
Since the member was dropped from the common Blackfin header, we need to stop using it in the SPORT driver too. Signed-off-by: Mike Frysinger <[email protected]> Signed-off-by: Scott Jiang <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-04-27spi/bfin_spi: drop bits_per_word from client dataScott Jiang1-1/+0
No other SPI controller has this field, and SPI clients should be setting this up in their own drivers. So drop it from the Blackfin controller to keep people from using it. Signed-off-by: Mike Frysinger <[email protected]> Signed-off-by: Scott Jiang <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-04-27spi/spi-bfin-sport: move word length setup to transfer handlerScott Jiang1-4/+3
Each transfer may have its own bits per word. Signed-off-by: Scott Jiang <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-04-27spi/bfin5xx: rename config macro name for bfin5xx spi controller driverScott Jiang2-2/+2
This controller is only for blackfin 5xx soc, so rename it to BFIN5XX Signed-off-by: Scott Jiang <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-04-27NFS: Remove unused function nfs_lookup_with_sec()Bryan Schumaker1-62/+0
This fixes a compiler warning. Signed-off-by: Bryan Schumaker <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-04-27NFS: Honor the authflavor set in the clone mount dataBryan Schumaker4-7/+8
The authflavor is set in an nfs_clone_mount structure and passed to the xdev_mount() functions where it was promptly ignored. Instead, use it to initialize an rpc_clnt for the cloned server. Signed-off-by: Bryan Schumaker <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-04-27NFS: Fix following referral mount points with different securityBryan Schumaker5-26/+72
I create a new proc_lookup_mountpoint() to use when submounting an NFS v4 share. This function returns an rpc_clnt to use for performing an fs_locations() call on a referral's mountpoint. Signed-off-by: Bryan Schumaker <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-04-27NFS: Do secinfo as part of lookupBryan Schumaker5-20/+103
Whenever lookup sees wrongsec do a secinfo and retry the lookup to find attributes of the file or directory, such as "is this a referral mountpoint?". This also allows me to remove handling -NFS4ERR_WRONSEC as part of getattr xdr decoding. Signed-off-by: Bryan Schumaker <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-04-27NFS: Handle exceptions coming out of nfs4_proc_fs_locations()Bryan Schumaker1-1/+14
We don't want to return -NFS4ERR_WRONGSEC to the VFS because it could cause the kernel to oops. Signed-off-by: Bryan Schumaker <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-04-27NFS: Fix SECINFO_NO_NAMEBryan Schumaker1-5/+19
I was using the same decoder function for SECINFO and SECINFO_NO_NAME, so it was returning an error when it tried to decode an OP_SECINFO_NO_NAME header as OP_SECINFO. Signed-off-by: Bryan Schumaker <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-04-27SUNRPC: traverse clients tree on PipeFS eventStanislav Kinsbursky1-4/+25
v2: recursion was replaced by loop If client is a clone, then it's parent can not be in the list. But parent's Pipefs dentries have to be created and destroyed. Note: event skip helper for clients introduced Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-04-27SUNRPC: set per-net PipeFS superblock before notificationStanislav Kinsbursky1-1/+2
There can be a case, when on MOUNT event RPC client (after it's dentries were created) is not longer hold by anyone except notification callback. I.e. on release this client will be destoroyed. And it's dentries have to be destroyed as well. Which in turn requires per-net PipeFS superblock to be set. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-04-27SUNRPC: skip clients with program without PipeFS entriesStanislav Kinsbursky1-2/+2
1) This is sane. 2) Otherwise there will be soft lockup: do { rpc_get_client_for_event (clnt->cl_dentry == NULL ==> choose) __rpc_pipefs_event (clnt->cl_program->pipe_dir_name == NULL ==> return) } while (1) Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-04-27SUNRPC: skip dead but not buried clients on PipeFS eventsStanislav Kinsbursky1-1/+2
These clients can't be safely dereferenced if their counter in 0. Signed-off-by: Stanislav Kinsbursky <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-04-27Avoid beyond bounds copy while caching ACLSachin Prabhu2-8/+6
When attempting to cache ACLs returned from the server, if the bitmap size + the ACL size is greater than a PAGE_SIZE but the ACL size itself is smaller than a PAGE_SIZE, we can read past the buffer page boundary. Signed-off-by: Sachin Prabhu <[email protected]> Reported-by: Jian Li <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2012-04-27spi/pl022: Allow request for higher frequency than maximum possibleViresh Kumar1-2/+8
Currently, if we request for frequency greater than maximum possible, spi driver returns error. For example, if the spi block src frequency is 333/4 MHz, i.e. 83.33.. MHz, maximum frequency programmable would be src/2. Which would come around 41.6... It is difficult to pass frequency in these figures. We normally try to program in round figures, like 42 MHz and it should get programmed to <= requested_frequency, i.e. 41.6... For this to happen, we must not return error even if requested freq is higher than max possible. But should program it to max possible. Reported-by: Vinit Kamalaksha Shenoy <[email protected]> Signed-off-by: Viresh Kumar <[email protected]> Acked-by: Linus Walleij <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-04-27Btrfs: Fix space checking during fs resizeDaniel J Blueman1-1/+1
Fix out-of-space checking, addressing a warning and potential resource leak when resizing the filesystem down while allocating blocks. Signed-off-by: Daniel J Blueman <[email protected]> Reviewed-by: Josef Bacik <[email protected]> Signed-off-by: Chris Mason <[email protected]>
2012-04-27Btrfs: fix block_rsv and space_info lock orderingStefan Behrens1-2/+2
may_commit_transaction() calls spin_lock(&space_info->lock); spin_lock(&delayed_rsv->lock); and update_global_block_rsv() calls spin_lock(&block_rsv->lock); spin_lock(&sinfo->lock); Lockdep complains about this at run time. Everywhere except in update_global_block_rsv(), the space_info lock is the outer lock, therefore the locking order in update_global_block_rsv() is changed. Signed-off-by: Stefan Behrens <[email protected]> Signed-off-by: Chris Mason <[email protected]>
2012-04-27Btrfs: Prevent root_list corruptionDaniel J Blueman1-0/+2
I was seeing root_list corruption on unmount during fs resize in 3.4-rc4; add correct locking to address this. Signed-off-by: Daniel J Blueman <[email protected]> Signed-off-by: Chris Mason <[email protected]>
2012-04-27Btrfs: fix repair code for RAID10Jan Schmidt1-1/+2
btrfs_map_block sets mirror_num, so that the repair code knows eventually which device gave us the read error. For RAID10, mirror_num must be 1 or 2. Before this fix mirror_num was incorrectly related to our stripe index. Signed-off-by: Jan Schmidt <[email protected]> Signed-off-by: Chris Mason <[email protected]>
2012-04-27Btrfs: do not start delalloc inodes during syncJosef Bacik1-1/+0
btrfs_start_delalloc_inodes will just walk the list of delalloc inodes and start writing them out, but it doesn't splice the list or anything so as long as somebody is doing work on the box you could end up in this section _forever_. So just remove it, it's not needed anyway since sync will start writeback on all inodes anyway, all we need to do is wait for ordered extents and then we can commit the transaction. In my horrible torture test sync goes from taking 4 minutes to about 1.5 minutes. Thanks, Signed-off-by: Josef Bacik <[email protected]> Signed-off-by: Chris Mason <[email protected]>
2012-04-27spi/bcm63xx: set master driver mode_bits.Florian Fainelli1-0/+1
We were not properly advertising the MODE bits supported by this driver, fix that. Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-04-27spi/bcm63xx: don't use the stopping stateFlorian Fainelli1-11/+2
We do not need to use a flag to indicate if the master driver is stopping it is sufficient to perform spi master unregistering in the platform driver's remove function. Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-04-27spi/bcm63xx: convert to the pump message infrastructureFlorian Fainelli1-60/+89
This patch converts the bcm63xx SPI driver to use the SPI infrastructure pump message queue. Since we were previously sleeping in the SPI driver's transfer() function (which is not allowed) this is now fixed as well. To complete that conversion a certain number of changes have been made: - the transfer len is split into multiple hardware transfers in case its size is bigger than the hardware FIFO size - the FIFO refill is no longer done in the interrupt context, which was a bad idea leading to quick interrupt handler re-entrancy Tested-by: Tanguy Bouzeloc <[email protected]> Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-04-27Avoid reading past buffer when calling GETACLSachin Prabhu2-13/+21
Bug noticed in commit bf118a342f10dafe44b14451a1392c3254629a1f When calling GETACL, if the size of the bitmap array, the length attribute and the acl returned by the server is greater than the allocated buffer(args.acl_len), we can Oops with a General Protection fault at _copy_from_pages() when we attempt to read past the pages allocated. This patch allocates an extra PAGE for the bitmap and checks to see that the bitmap + attribute_length + ACLs don't exceed the buffer space allocated to it. Signed-off-by: Sachin Prabhu <[email protected]> Reported-by: Jian Li <[email protected]> [Trond: Fixed a size_t vs unsigned int printk() warning] Signed-off-by: Trond Myklebust <[email protected]>
2012-04-27spi/spi-ep93xx.c: use dma_transfer_direction instead of dma_data_directionH Hartley Sweeten1-14/+10
A new enum indicating the dma channel direction was introduced by: commit 49920bc66984a512f4bcc7735a61642cd0e4d6f2 dmaengine: add new enum dma_transfer_direction The following commit changed spi-ep93xx to use the new enum: commit a485df4b4404379786c4bdd258bc528b2617449d spi, serial: move to dma_transfer_direction In doing so a sparse warning was introduced: warning: mixing different enum types int enum dma_data_direction versus int enum dma_transfer_direction This is produced because the 'dir' passed in ep93xx_spi_dma_prepare is an enum dma_data_direction and is being used to set the dma_slave_config 'direction' which is now an enum dma_transfer_direction. Fix this by converting spi-ep93xx to use the new enum type in all places. Signed-off-by: H Hartley Sweeten <[email protected]> Acked-by: Mika Westerberg <[email protected]> Acked-by: Vinod Koul <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-04-27spi: fix spi.h kernel-doc warningRandy Dunlap1-1/+1
Fix kernel-doc warning in spi.h (copy/paste): Warning(include/linux/spi/spi.h:365): No description found for parameter 'unprepare_transfer_hardware' Signed-off-by: Randy Dunlap <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-04-27spi/pl022: Fix calculate_effective_freq()Viresh Kumar1-6/+17
calculate_effective_freq() was still not optimized and there were cases when it returned without error and with values of cpsr and scr as zero. Also, the variable named found is not used well. This patch targets to optimize and correct this routine. Tested for SPEAr. Signed-off-by: Viresh Kumar <[email protected]> Tested-by: Vinit Kamalaksha Shenoy <[email protected]> Acked-by: Linus Walleij <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-04-27Merge branch 'v3.4-samsung-fixes-3' of ↵Olof Johansson10-39/+78
git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes * 'v3.4-samsung-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: ARM: SAMSUNG: add missing MMC_CAP2_BROKEN_VOLTAGE capability ARM: EXYNOS: Fix compilation error when CONFIG_OF is not defined ARM: EXYNOS: Fix resource on dev-dwmci.c ARM: S3C24XX: Fix build warning for S3C2410_PM ARM: mini2440_defconfig: Fix build error ARM: EXYNOS: Fix incorrect initialization of GIC ARM: EXYNOS: use 'exynos4-sdhci' as device name for sdhci controllers
2012-04-27tcp: clean up use of jiffies in tcp_rcv_rtt_measure()Neal Cardwell1-1/+1
Clean up a reference to jiffies in tcp_rcv_rtt_measure() that should instead reference tcp_time_stamp. Since the result of the subtraction is passed into a function taking u32, this should not change any behavior (and indeed the generated assembly does not change on x86_64). However, it seems worth cleaning this up for consistency and clarity (and perhaps to avoid bugs if this is copied and pasted somewhere else). Signed-off-by: Neal Cardwell <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2012-04-27Merge branch 'fixes' of git://github.com/hzhuang1/linux into fixesOlof Johansson6-6/+55
* 'fixes' of git://github.com/hzhuang1/linux: ARM: PXA2xx: MFP: fix potential direction bug ARM: PXA2xx: MFP: fix bug with MFP_LPM_KEEP_OUTPUT arm/sa1100: fix sa1100-rtc memory resource ARM: pxa: fix gpio wakeup setting
2012-04-27MIPS: Remove get_current_pgd().David Daney1-6/+0
It is unused in the tree. Signed-off-by: David Daney <[email protected]> Cc: [email protected] Patchwork: https://patchwork.linux-mips.org/patch/3557/ Signed-off-by: Ralf Baechle <[email protected]>
2012-04-27Merge tag 'fixes-for-v3.4-rc5' of ↵Greg Kroah-Hartman7-8/+21
git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus usb: fixes for v3.4-rc cycle A few more fixes for v3.4-rc cycle. It includes a couple of fixes to the ordering of the methods in udc-core.c. Without these two patches, we will have issues when either unregistering a gadget driver (triggered with dummy_hcd only) or issuing a device-initiated disconnect through sysfs. There's also a fix on dummy_hcd to not call ->pullup() from udc_stop() because udc-core.c already handles that. A fix to MUSB as promised, to kill the compile warnings regarding deprecated interfaces. We are essentially dropping the __deprecated flag because it doesn't look like we will ever be able to live without it when we consider the amount of silicon issues we find on different MUSB instantiations. A couple of other fixes are also available, one adding the missing transceiver events to gpio_vbus and another adding a missing unregister call to MUSB's davinci glue layer.
2012-04-27x86/amd: Re-enable CPU topology extensions in case BIOS has disabled itAndreas Herrmann1-0/+18
BIOS will switch off the corresponding feature flag on family 15h models 10h-1fh non-desktop CPUs. The topology extension CPUID leafs are required to detect which cores belong to the same compute unit. (thread siblings mask is set accordingly and also correct information about L1i and L2 cache sharing depends on this). W/o this patch we wouldn't see which cores belong to the same compute unit and also cache sharing information for L1i and L2 would be incorrect on such systems. Signed-off-by: Andreas Herrmann <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2012-04-27MIPS: ath79: fix AR933X WMAC reset codeGabor Juhos1-1/+1
The current code puts the built-in WMAC device of the AR933X SoCs into reset instead of starting it. This causes a hard lock on AR933X based boards when the wireless driver tries to access the device. Signed-off-by: Gabor Juhos <[email protected]> Cc: [email protected] Cc: [email protected] Patchwork: https://patchwork.linux-mips.org/patch/3484/ Signed-off-by: Ralf Baechle <[email protected]>
2012-04-27i2c: mxs: disable QUEUE when sending is doneWolfram Sang1-2/+3
Since the last fixes to this driver ensure now the queue termination is done correctly, we can finally disable the queue after a transfer without problems. The gain is that it will only be reenabled after the next transfer is fully set up. Before, the queue was running all the time and if the setup of the next message was interrupted by another thread, an incomplete buffer could have been sent, padded with zeroes. Signed-off-by: Wolfram Sang <[email protected]>
2012-04-27usb: gadget: udc-core: fix incompatibility with dummy-hcdAlan Stern1-1/+1
This patch (as1548) fixes a recently-introduced incompatibility between the UDC core and the dummy-hcd driver. Commit 8ae8090c82eb407267001f75b3d256b3bd4ae691 (usb: gadget: udc-core: fix asymmetric calls in remove_driver) moved the usb_gadget_udc_stop() call in usb_gadget_remove_driver() below the usb_gadget_disconnect() call. As a result, usb_gadget_disconnect() gets called at a time when the gadget driver believes it has been unbound but dummy-hcd believes it has not. A nasty error ensues when dummy-hcd calls the gadget driver's disconnect method a second time. To fix the problem, this patch moves the gadget driver's unbind notification after the usb_gadget_disconnect() call. Now nothing happens between the two unbind notifications, so nothing goes wrong. Signed-off-by: Alan Stern <[email protected]> Tested-by: Alexander Shishkin <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2012-04-27usb: gadget: udc-core: fix wrong call orderFelipe Balbi1-1/+1
commit 6d258a4 (usb: gadget: udc-core: stop UDC on device-initiated disconnect) introduced another case of asymmetric calls when issuing a device-initiated disconnect. Fix it. Reported-by: Ben Hutchings <[email protected]> Signed-off-by: Felipe Balbi <[email protected]>
2012-04-27drm/radeon/kms: use frac fb div on APUsAlex Deucher1-0/+3
Seems to be more stable on certain monitors. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=48880 Signed-off-by: Alex Deucher <[email protected]> Cc: [email protected] Signed-off-by: Dave Airlie <[email protected]>
2012-04-27drm/radeon: add a missing entry to encoder_namesIlija Hadzic1-1/+2
An entry for INTERNAL_VCE encoder was missing. Add it. Signed-off-by: Ilija Hadzic <[email protected]> Reviewed-by: Alex Deucher <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
2012-04-27Merge branch 'drm-intel-fixes' of ↵Dave Airlie3-35/+36
git://people.freedesktop.org/~danvet/drm-intel into drm-fixes From Daniel Vetter - VGA load-detect fix. This bug seems to be as old as the load-detect code (2.6.30), but needs stupid userspace (upowerd trying to detect connectors on dpms-off outputs) to actually kill the machine. And obviously a machine without VGA-hotplug, otherwise we don't do load detect. - 2 interger overflow fixes for unpriviledged ioctls from Xi Wang. - Fix SDVO regression for low-res (pixelclock < 100MHz) digital outputs, introduce in 2.6.36. * 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel: drm/i915: handle input/output sdvo timings separately in mode_set drm/i915: fix integer overflow in i915_gem_do_execbuffer() drm/i915: fix integer overflow in i915_gem_execbuffer2() drm/i915: fixup load-detect on enabled, but not active pipe
2012-04-27Merge branch 'exynos-drm-fixes' of ↵Dave Airlie1-25/+5
git://git.infradead.org/users/kmpark/linux-2.6-samsung into drm-fixes From Inki Dae: this patch set fixes gem allocation and mapping issue between user space and physical memory region. * 'exynos-drm-fixes' of git://git.infradead.org/users/kmpark/linux-2.6-samsung: drm/exynos: added missed vm area region mapping type. drm/exynos: fixed exynos_drm_gem_map_pages bug. drm/exynos: fixed duplicatd memory allocation bug.
2012-04-27ARM: PXA2xx: MFP: fix potential direction bugIgor Grinberg1-0/+9
Pins configured as input and have MFP_LPM_DRIVE_* flag set, can have a wrong output value for some period of time (spike) during the suspend sequence. This can happen because the direction of the pins (GPDR) is set by software and the output level is set by hardware (PGSR) at a later stage. Fix the above potential bug by setting the output levels first. Also save the actual levels of the pins before the suspend and restore them after the resume, but before the direction settings take place, so the same bug as described above will not happen in the resume sequence. Reported-by: Paul Parsons <[email protected]> Signed-off-by: Igor Grinberg <[email protected]> Tested-by: Paul Parsons <[email protected]> Signed-off-by: Haojian Zhuang <[email protected]>
2012-04-27ARM: PXA2xx: MFP: fix bug with MFP_LPM_KEEP_OUTPUTIgor Grinberg2-2/+17
Pins that have MFP_LPM_KEEP_OUTPUT set and are configured for output must retain the output state in low power mode. Currently, the pin direction configuration is overrided with values in gpdr_lpm[] array and do not obey the MFP_LPM_KEEP_OUTPUT setting. Fix the above bug and add some documentation to clarify the MFP_LPM_KEEP_OUTPUT setting purpose. Reported-by: Paul Parsons <[email protected]> Signed-off-by: Igor Grinberg <[email protected]> Tested-by: Paul Parsons <[email protected]> Signed-off-by: Haojian Zhuang <[email protected]>
2012-04-27arm/sa1100: fix sa1100-rtc memory resourceDmitry Artamonow1-1/+1
DEFINE_RES_MEM() takes the size of resource as a second argument, not the end address. Passing end address leads to following error in runtime during device registration: sa1100-rtc: failed to claim resource 0 Fix it. Signed-off-by: Dmitry Artamonow <[email protected]> Signed-off-by: Haojian Zhuang <[email protected]>
2012-04-27ARM: pxa: fix gpio wakeup settingRobert Jarzmik3-3/+28
In 3.3, gpio wakeup setting was broken. The call enable_irq_wake() didn't set up the PXA gpio registers (PWER, ...) anymore. Fix it at least for pxa27x. The driver doesn't seem to be used in pxa25x (weird ...), and the fix doesn't extend to pxa3xx and pxa95x (which don't have a gpio_set_wake() available). Signed-off-by: Robert Jarzmik <[email protected]> Signed-off-by: Haojian Zhuang <[email protected]>
2012-04-26xen/acpi: Workaround broken BIOSes exporting non-existing C-states.Konrad Rzeszutek Wilk1-1/+4
We did a similar check for the P-states but did not do it for the C-states. What we want to do is ignore cases where the DSDT has definition for sixteen CPUs, but the machine only has eight CPUs and we get: xen-acpi-processor: (CX): Hypervisor error (-22) for ACPI CPU14 Reported-by: Tobias Geiger <[email protected]> Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>