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2010-03-16ALSA: hda: Use LPIB and 6stack-dig for eMachines T5212Daniel T Chen
BugLink: https://bugs.launchpad.net/bugs/538895 The OR has verified that both position_fix=1 and model=6stack-dig are necessary to have capture function properly. (The existing 3stack-6ch model quirk seems to be incorrect.) Reported-by: Reuben Bailey <reuben.e.bailey@gmail.com> Tested-by: Reuben Bailey <reuben.e.bailey@gmail.com> Cc: <stable@kernel.org> Signed-off-by: Daniel T Chen <crimsun@ubuntu.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-03-16md: deal with merge_bvec_fn in component devices better.NeilBrown
If a component device has a merge_bvec_fn then as we never call it we must ensure we never need to. Currently this is done by setting max_sector to 1 PAGE, however this does not stop a bio being created with several sub-page iovecs that would violate the merge_bvec_fn. So instead set max_segments to 1 and set the segment boundary to the same as a page boundary to ensure there is only ever one single-page segment of IO requested at a time. This can particularly be an issue when 'xen' is used as it is known to submit multiple small buffers in a single bio. Signed-off-by: NeilBrown <neilb@suse.de> Cc: stable@kernel.org
2010-03-16x86: Handle legacy PIC interrupts on all the cpu'sSuresh Siddha
Ingo Molnar reported that with the recent changes of not statically blocking IRQ0_VECTOR..IRQ15_VECTOR's on all the cpu's, broke an AMD platform (with Nvidia chipset) boot when "noapic" boot option is used. On this platform, legacy PIC interrupts are getting delivered to all the cpu's instead of just the boot cpu. Thus not initializing the vector to irq mapping for the legacy irq's resulted in not handling certain interrupts causing boot hang. Fix this by initializing the vector to irq mapping on all the logical cpu's, if the legacy IRQ is handled by the legacy PIC. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> [ -v2: io-apic-enabled improvement ] Acked-by: Yinghai Lu <yinghai@kernel.org> Cc: Eric W. Biederman <ebiederm@xmission.com> LKML-Reference: <1268692386.3296.43.camel@sbs-t61.sc.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-03-15bridge: Move NULL mdb check into br_mdb_ip_getHerbert Xu
Since all callers of br_mdb_ip_get need to check whether the hash table is NULL, this patch moves the check into the function. This fixes the two callers (query/leave handler) that didn't check it. Reported-by: Michael Braun <michael-dev@fami-braun.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15ISDN: Add PCI ID for HFC-2S/4S Beronet Card PCIeLars Ellenberg
A few subdevice IDs seem to have been dropped when hfc_multi was included upstream, just compare the list at http://www.openvox.cn/viewvc/misdn/trunk/hfc_multi.c?revision=75&view=annotate#l175 with the IDs in drivers/isdn/hardware/mISDN/hfcmulti.c Added PCIe 2 Port card and LED settings (same as PCI) Do not use <linux/pci_ids.h> /KKe Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15Merge branch 'master' of /home/davem/src/GIT/linux-2.6/David S. Miller
2010-03-15ARM: SAMSUNG: Fixup commit 4e6d488af37980d224cbf298224db6173673f362Ben Dooks
Commit 4e6d488af37980d224cbf298224db6173673f362 either missed out the following machine files or somehow managed to clash between merges. Fixup the three files missing the second parameter to addruart macro to allow them to build. Fixes the following warnings in arch/arm/kernel/debug.c: arch/arm/kernel/debug.S: Assembler messages: arch/arm/kernel/debug.S:167: Error: too many positional arguments arch/arm/kernel/debug.S:183: Error: too many positional arguments Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-03-15net-2.6 [Bug-Fix][dccp]: fix oops caused after failed initialisationGerrit Renker
dccp: fix panic caused by failed initialisation This fixes a kernel panic reported thanks to Andre Noll: if DCCP is compiled into the kernel and any out of the initialisation steps in net/dccp/proto.c:dccp_init() fail, a subsequent attempt to create a SOCK_DCCP socket will panic, since inet{,6}_create() are not prevented from creating DCCP sockets. This patch fixes the problem by propagating a failure in dccp_init() to dccp_v{4,6}_init_net(), and from there to dccp_v{4,6}_init(), so that the DCCP protocol is not made available if its initialisation fails. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15myri: remove dead codeDan Carpenter
We can never reach the return statement. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15gigaset: prune use of tty_buffer_request_roomTilman Schmidt
Calling tty_buffer_request_room() before tty_insert_flip_string() is unnecessary, costs CPU and for big buffers can mess up the multi-page allocation avoidance. Signed-off-by: Tilman Schmidt <tilman@imap.cc> Acked-by: Karsten Keil <keil@b1-systems.de> CC: Alan Cox <alan@lxorguk.ukuu.org.uk>, stable@kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15gigaset: correct clearing of at_state strings on RINGTilman Schmidt
In RING handling, clear the table of received parameter strings in a loop like everywhere else, instead of by enumeration which had already gotten out of sync. Impact: minor bugfix Signed-off-by: Tilman Schmidt <tilman@imap.cc> Acked-by: Karsten Keil <keil@b1-systems.de> CC: stable@kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15gigaset: avoid registering CAPI driver more than onceTilman Schmidt
Registering/unregistering the Gigaset CAPI driver when a device is connected/disconnected causes an Oops when disconnecting two Gigaset devices in a row, because the same capi_driver structure gets unregistered twice. Fix by making driver registration/unregistration a separate operation (empty in the ISDN4Linux case) called when the main module is loaded/unloaded. Impact: bugfix Signed-off-by: Tilman Schmidt <tilman@imap.cc> Acked-by: Karsten Keil <keil@b1-systems.de> CC: stable@kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15obsolete config in kernel source: HSO_AUTOPMChristoph Egger
CONFIG_HSO_AUTOPM is set by KConfig / set in the Kernel source, makefiles and won't be ever set this way, therefor simply removing the protected code. Signed-off-by: Christoph Egger <siccegge@stud.informatik.uni-erlangen.de> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15obsolete config in kernel source: USE_INTERNAL_TIMERChristoph Egger
CONFIG_USE_INTERNAL_TIMER seems to be the remainings of some experiment. It is explicitely #undef-ed as not working, only referenced from one source file and rather aged. Hereby cleaning it from the kernel tree. Signed-off-by: Christoph Egger <siccegge@stud.informatik.uni-erlangen.de> Acked-by: Roel Kluin <roel.kluin@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15atm: use for_each_set_bit()Akinobu Mita
Replace open-coded loop with for_each_set_bit(). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Chas Williams <chas@cmf.nrl.navy.mil> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15phonet: use for_each_set_bit()Akinobu Mita
Replace open-coded loop with for_each_set_bit(). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15timestamping: fix example buildRandy Dunlap
Fix Makefiles so that Documentation/networking/timestamping/timestamping.c will build when using the CONFIG_BUILD_DOCSRC kconfig option. (timestamping.c does not build currently with its simple Makefile.) Also fix printf format warnings. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Patrick Ohly <patrick.ohly@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15ARM: SAMSUNG: Fix build error from stale define in <plat/uncompress.h>Ben Dooks
The decleration of error() as static in the platform specific uncompress code in arch/arm/plat-samsung/include/plat/uncomopress.h causes the build of the uncompressor to break. Remove it, as it is no longer needed. arch/arm/boot/compressed/decompress.o: In function `gunzip': /var/tmp/kernel-orig/arch/arm/boot/compressed/../../../../lib/decompress_inflate.c:67: undefined reference to `error' /var/tmp/kernel-orig/arch/arm/boot/compressed/../../../../lib/decompress_inflate.c:73: undefined reference to `error' /var/tmp/kernel-orig/arch/arm/boot/compressed/../../../../lib/decompress_inflate.c:80: undefined reference to `error' /var/tmp/kernel-orig/arch/arm/boot/compressed/../../../../lib/decompress_inflate.c:95: undefined reference to `error' /var/tmp/kernel-orig/arch/arm/boot/compressed/../../../../lib/decompress_inflate.c:152: undefined reference to `error' Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-03-15drivers/net: drop redundant memsetJulia Lawall
The region set by the call to memset is immediately overwritten by the subsequent call to memcpy. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression e1,e2,e3,e4; @@ - memset(e1,e2,e3); memcpy(e1,e4,e3); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15i4l: change magic numbers in Eicon DIVA ISDN driver to symbolic namesIan Munsie
Replace references to the '20' magic number found throughout the Eicon ISDN driver for the length of the station_id field in the T30_INFO struct with the T30_MAX_STATION_ID_LENGTH symbolic constant. Signed-off-by: Ian Munsie <imunsie@au.ibm.com> Cc: Armin Schindler <mac@melware.de> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: Stoyan Gaydarov <sgayda2@uiuc.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15i4l: silence compiler warnings for array access in Eicon DIVA ISDN driverIan Munsie
When compiling this driver, the compiler throws the following warnings: drivers/isdn/hardware/eicon/message.c:8426: warning: array subscript is above array bounds drivers/isdn/hardware/eicon/message.c:8427: warning: array subscript is above array bounds drivers/isdn/hardware/eicon/message.c:8434: warning: array subscript is above array bounds drivers/isdn/hardware/eicon/message.c:8435: warning: array subscript is above array bounds drivers/isdn/hardware/eicon/message.c:8436: warning: array subscript is above array bounds drivers/isdn/hardware/eicon/message.c:8447: warning: array subscript is above array bounds This arises from the particular semantics the driver is using to write to the nlc array (static byte[256]). The array has a length in byte 0 followed by a T30_INFO struct starting at byte 1. The T30_INFO struct has a number of variable length strings after the station_id entry, which cannot be explicitly defined in the struct and the driver accesses them with an array index to station_id beyond the length of station_id. This patch merely changes the semantics that the driver uses to access the entries after the station_id entry to use the original 256 byte nlc array taking the offset and length of the station_id entry to calculate where to write in the array, thereby silencing the warning. Signed-off-by: Ian Munsie <imunsie@au.ibm.com> Cc: Armin Schindler <mac@melware.de> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: Stoyan Gaydarov <sgayda2@uiuc.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15isdn: misplaced parenthesis in pof_handle_data()Roel Kluin
The parenthesis was misplaced. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Karsten Keil <isdn@linux-pingi.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15bnx2x: change smp_mb() comment to conform the trueStanislaw Gruszka
Access to fp->tx_bp_prod is protected by __netif_tx_lock, smp_mb() is not needed for that. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15bnx2x: remove not necessary compiler barrierStanislaw Gruszka
Access to fp->tx_bd_prod is protected by __netif_tx_lock, so we do not need any barrier for that. Update of fp->tx_bd_cons in bnx2x_tx_int() is not protected by lock, but barrier() nor smb_mb() in bnx2x_tx_avail() not guarantee we will see values that is written on other cpu. Ordering issues between netif_tx_stop_queue(), netif_tx_queue_stopped(), fp->tx_bd_cons = bd_cons and bnx2x_tx_avail() are already handled by smp_mb() in bnx2x_tx_int() and bnx2x_start_xmit(). Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15bnx2x: use smp_mb() to keep ordering of read write operationsStanislaw Gruszka
Since we want to keep ordering of write to fp->bd_tx_cons and netif_tx_queue_stopped(txq), what is read of txq->state, we have to use general memory barrier. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15be2net: fix mccq create for big endian architecturesAjit Khaparde
The request to create an mccq was being dispatched without doing a byte swap of num_pages. This byte swap is necessary for Big Endian systems like PPC. Not having this fix leads mccq create to fail on BE ASICs running newer version of firmware, thereby causing driver initialization failure. Signed-off-by: Ajit Khaparde <ajitk@serverengines.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15TI DaVinci EMAC: Convert to dev_pm_opschaithrika@ti.com
Migrate from the legacy PM hooks to use dev_pm_ops structure. Signed-off-by: Chaithrika U S <chaithrika@ti.com> Acked-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15net: davinci emac: use dma_{map, unmap}_single API for cache coherencySekhar Nori
The davinci emac driver uses some ARM specific DMA APIs for cache coherency which have been removed from kernel with the 2.6.34 merge. Modify the driver to use the dma_{map, unmap}_single() APIs defined in dma-mapping.h Without this fix, the driver fails to compile on Linus's tree. Tested on DM365 and OMAP-L138 EVMs. Signed-off-by: Sekhar Nori <nsekhar@ti.com> Acked-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15ARM: SAMSUNG: Add suspend/resume support for S3C PWM driverVasily Khoruzhick
Reset period_ns and duty_ns values in suspend handler to avoid skip of configuration if same values passed to pwm_config; Restore invertion bit in resume handler. Without this patch PWM works incorrectly after resume from suspend. Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-03-15ARM: S3C2440: Fix s3c2440 cpufreq compilation post move.Vasily Khoruzhick
Fix compilation issue by moving s3c2440-cpufreq.c into mach-s3c2440 directory Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-03-15e100: Fix ring parameter change handling regression.David S. Miller
When the PCI pool changes were added to fix resume failures: commit 98468efddb101f8a29af974101c17ba513b07be1 e100: Use pci pool to work around GFP_ATOMIC order 5 memory allocation failu and commit 70abc8cb90e679d8519721e2761d8366a18212a6 e100: Fix broken cbs accounting due to missing memset. This introduced a problem that can happen if the TX ring size is increased. We need to size the PCI pool using cbs->max instead of the default cbs->count value. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-15ARM: Fix RiscPC decompressor build errorsRussell King
arch/arm/boot/compressed/decompress.o: In function `do_decompress': decompress.c:(.text+0x26e8): undefined reference to `error' decompress.c:(.text+0x2760): undefined reference to `error' decompress.c:(.text+0x27d8): undefined reference to `error' decompress.c:(.text+0x2824): undefined reference to `error' decompress.c:(.text+0x28f0): undefined reference to `error' Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-03-15NFS: ensure bdi_unregister is called on mount failure.NeilBrown
bdi_unregister is called by nfs_put_super which is only called by generic_shutdown_super if ->s_root is not NULL. So if we error out in a circumstance where we called nfs_bdi_register (i.e. server != NULL) but have not set s_root, then we need to call bdi_unregister explicitly in nfs_get_sb and various other *_get_sb() functions. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-03-15ARM: Fix sorting of platform group config options and includesRussell King
... and document the sorting criteria to help future additions. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-03-15ARM: 5991/1: Fix regression in restore_user_regs macroAnders Grafström
ARMv5T and earlier require that a ldm {}^ instruction is not followed by an instruction that accesses banked registers. This patch restores the nop that was lost in commit b86040a59feb255a8193173caa4d5199464433d5. Signed-off-by: Anders Grafström <grfstrm@users.sourceforge.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-03-15cifs: trivial white spaceDan Carpenter
I fixed the indent level. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-03-15Btrfs: fix gfp flags masking in the compression codeNick Piggin
GFP_FS must be masked out, NOFS can't be or'd in. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-03-15Btrfs: don't look at bio flags after submit_bioChris Mason
After callling submit_bio, the bio can be freed at any time. The btrfs submission thread helper was checking the bio flags too late, which might not give the correct answer. When CONFIG_DEBUG_PAGE_ALLOC is turned on, it can lead to oopsen. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-03-15btrfs: using btrfs_stack_device_id() get devidXiao Guangrong
We can use btrfs_stack_device_id() to get dev_item->devid Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-03-15btrfs: use memparseAkinobu Mita
Use memparse() instead of its own private implementation. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Chris Mason <chris.mason@oracle.com> Cc: linux-btrfs@vger.kernel.org Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-03-15Btrfs: add a "df" ioctl for btrfsJosef Bacik
df is a very loaded question in btrfs. This gives us a way to get the per-space usage information so we can tell exactly what is in use where. This will help us figure out ENOSPC problems, and help users better understand where their disk space is going. Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-03-15Btrfs: cache the extent state everywhere we possibly can V2Josef Bacik
This patch just goes through and fixes everybody that does lock_extent() blah unlock_extent() to use lock_extent_bits() blah unlock_extent_cached() and pass around a extent_state so we only have to do the searches once per function. This gives me about a 3 mb/s boots on my random write test. I have not converted some things, like the relocation and ioctl's, since they aren't heavily used and the relocation stuff is in the middle of being re-written. I also changed the clear_extent_bit() to only unset the cached state if we are clearing EXTENT_LOCKED and related stuff, so we can do things like this lock_extent_bits() clear delalloc bits unlock_extent_cached() without losing our cached state. I tested this thoroughly and turned on LEAK_DEBUG to make sure we weren't leaking extent states, everything worked out fine. Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-03-15Btrfs: cache ordered extent when completing ioJosef Bacik
When finishing io we run btrfs_dec_test_ordered_pending, and then immediately run btrfs_lookup_ordered_extent, but btrfs_dec_test_ordered_pending does that already, so we're searching twice when we don't have to. This patch lets us pass a btrfs_ordered_extent in to btrfs_dec_test_ordered_pending so if we do complete io on that ordered extent we can just use the one we found then instead of having to do another btrfs_lookup_ordered_extent. This made my fio job with the other patch go from 24 mb/s to 29 mb/s. Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-03-15Btrfs: cache extent state in find_delalloc_rangeJosef Bacik
This patch makes us cache the extent state we find in find_delalloc_range since we'll have to lock the extent later on in the function. This will keep us from re-searching for the rang when we try to lock the extent. Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-03-15Btrfs: change the ordered tree to use a spinlock instead of a mutexJosef Bacik
The ordered tree used to need a mutex, but currently all we use it for is to protect the rb_tree, and a spin_lock is just fine for that. Using a spin_lock instead makes dbench run a little faster, 58 mb/s instead of 51 mb/s, and have less latency, 3445.138 ms instead of 3820.633 ms. Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-03-15Btrfs: finish read pages in the order they are submittedChris Mason
The endio is done at reverse order of bio vectors. That means for a sequential read, the page first submitted will finish last in a bio. Considering we will do checksum (making cache hot) for every page, this does introduce delay (and chance to squeeze cache used soon) for pages submitted at the begining. I don't observe obvious performance difference with below patch at my simple test, but seems more natural to finish read in the order they are submitted. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-03-15btrfs: fix btrfs_mkdir goto for no free objectidsMiao Xie
btrfs_mkdir() must jump to the place of ending transaction after btrfs_find_free_objectid() failed. Or this transaction can't end. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-03-15Btrfs: flush data on snapshot creationSage Weil
Flush any delalloc extents when we create a snapshot, so that recently written file data is always included in the snapshot. A later commit will add the ability to snapshot without the flush, but most people expect flushing. Signed-off-by: Sage Weil <sage@newdream.net> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-03-15Btrfs: make df be a little bit more understandableJosef Bacik
The way we report df usage is way confusing for everybody, including some other utilities (bacula for one). So this patch makes df a little bit more understandable. First we make used actually count the total amount of used space in all space info's. This will give us a real view of how much disk space is in use. Second, for blocks available, only count data space. This makes things like bacula work because it says 0 when you can no longer write anymore data to the disk. I think this is a nice compromise, since you will end up with something like the following [root@alpha ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup-lv_root 148G 30G 111G 21% / /dev/sda1 194M 116M 68M 64% /boot tmpfs 985M 12K 985M 1% /dev/shm /dev/mapper/VolGroup-LogVol02 145G 140G 0 100% /mnt/btrfs-test Compare this with btrfsctl -i output [root@alpha btrfs-progs-unstable]# ./btrfsctl -i /mnt/btrfs-test/ Metadata, DUP: total=4.62GB, used=2.46GB System, DUP: total=8.00MB, used=24.00KB Data: total=134.80GB, used=134.80GB Metadata: total=8.00MB, used=0.00 System: total=4.00MB, used=0.00 operation complete This way we show that there is no more data space to be used, but we have another 5GB of space left for metadata. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-03-15btrfs: Update existing btrfs_device for renaming deviceTARUISI Hiroaki
When we scan devices in a multi-device filesystem, we memorize the original name. If the device gets a new name, later scans don't update the in-kernel structures related to it, and we're not able to mount the filesystem. This patch updates device name during scaning. Signed-off-by: TARUISI Hiroaki <taruishi.hiroak@jp.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
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