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2010.10.06:11:36:27
Nobel z fizyki za przełomowy materiał (wideo)
Szybsze komputery i przejrzyste ekrany dotykowe mogą pojawić się na rynku dzięki grafenowi. Jest to supermocny, cienki materiał odkryty w roku 2004. Wczoraj nagrodę Nobla z fizyki otrzymali Andriej Gejm i Konstantin Nowosiołow za przełomowe eksperymenty związane z grafenem.

 

188121504757_564060007014Jan Blunck
I think it is wrong to unconditionally take the lock before calling atomic_dec_and_test() in _atomic_dec_and_lock(). This will deadlock in situation where it is known that the counter will now reach

 
172422834033_500160007621Jan Blunck
Creates the proper struct union_mount when mounting something into a union. If the topmost filesystem isnt capable of handling the white-out filetype it could only be mount read-only. Signed-off-by:

 
165029104105_551460007077Jan Blunck
From: Valerie Aurora (Henson) <vaurora@xxxxxxxxxx Add support for fallthru entries to tmpfs. Signed-off-by: Valerie Aurora (Henson) <vaurora@xxxxxxxxxx --- fs/dcache.c | 4 ++- fs/libfs

 
104026124271_561160007213Jan Blunck
Honor the S_OPAQUE flag in the union path lookup. Signed-off-by: Jan Blunck <jblunck@xxxxxxx Signed-off-by: Valerie Aurora (Henson) <vaurora@xxxxxxxxxx --- fs/namei.c | 17 ++++++++++++++-

 
133928424919_539660007843Jan Blunck
Add per mountpoint flag for Union Mount support. You need additional patches to util-linux for that to work - see: git://git.kernel.org/pub/scm/utils/util-linux-ng/val/util-linux-ng.git Signed-off-

 
108725724994_584560007851Jan Blunck
This patch changes real_lookup() into returning a struct path. Signed-off-by: Jan Blunck <jblunck@xxxxxxx Signed-off-by: Valerie Aurora (Henson) <vaurora@xxxxxxxxxx --- fs/namei.c | 82 ++

 
185929364133_589360007028Jan Blunck
Simply white-out a given directory entry. This functionality is usually used in the sense of unlink. Therefore the given dentry can still be in-use and contains an in-use inode. The filesystems inode

 
151425884938_561960007717Jan Blunck
Add some additional checks when mounting something into an union. Signed-off-by: Jan Blunck <jblunck@xxxxxxx Signed-off-by: Miklos Szeredi <mszeredi@xxxxxxx Signed-off-by: Valerie Aurora (He

 
169721424328_596860007168Jan Blunck
From: Valerie Aurora (Henson) <vaurora@xxxxxxxxxx Define the fallthru dcache flag and file system op. Signed-off-by: Valerie Aurora (Henson) <vaurora@xxxxxxxxxx --- include/linux/dcache.h

 
118120924010_509960007702Jan Blunck
From: Valerie Aurora (Henson) <vaurora@xxxxxxxxxx Define the fallthru dcache flag and file system op. Signed-off-by: Valerie Aurora (Henson) <vaurora@xxxxxxxxxx --- include/linux/dcache.h

 
194325774273_593760007485Jan Blunck
This patch adds support for whiteouts to tmpfs. Signed-off-by: Jan Blunck <jblunck@xxxxxxx Signed-off-by: David Woodhouse <dwmw2@xxxxxxxxxxxxx Signed-off-by: Valerie Aurora (Henson) <vaur

 
178722804421_592160007358Jan Blunck
This patch adds support for whiteouts to tmpfs. Signed-off-by: Jan Blunck <jblunck@xxxxxxx Signed-off-by: David Woodhouse <dwmw2@xxxxxxxxxxxxx Signed-off-by: Valerie Aurora (Henson) <vaur

 
194926864947_588760007047Jan Blunck
The userspace isnt ready for handling another filetype. Therefore this patch lets readdir() and others skip over the whiteout directory entries they might find. Signed-off-by: Jan Blunck <j.blunc

 
160420014190_593360007944Jan Blunck
The userspace isnt ready for handling another filetype. Therefore this patch lets readdir() and others skip over the whiteout directory entries they might find. Signed-off-by: Jan Blunck <j.blunc

 
110121504035_511160007525Jan Blunck
Break early when somebody tries to rehash an already hashed dentry. Otherwise this leads to interesting corruptions in the dcache hash table later on. Signed-off-by: Jan Blunck <jblunck@xxxxxxx

 
181421934101_508660007522Jan Blunck
Break early when somebody tries to rehash an already hashed dentry. Otherwise this leads to interesting corruptions in the dcache hash table later on. Signed-off-by: Jan Blunck <jblunck@xxxxxxx

 
157229174802_599360007974Arnd Bergmann
Jan Blunck: +Rename across different levels of the union is implemented as a copy-up +operation for regular files. Rename of directories simply returns EXDEV, the +same as if we tried to renam

 
135127864660_529760007965Arnd Bergmann
Jan Blunck: +Rename across different levels of the union is implemented as a copy-up +operation for regular files. Rename of directories simply returns EXDEV, the +same as if we tried to renam

 
134522774967_553560007936Valerie Aurora
Arnd Bergmann: Right, but that is consistent with how the kernel would treat a rename from one mount point to another, and tools like mv can handle this in user space. Yes, that is the descri

 
147923104085_551560007335Valerie Aurora
Arnd Bergmann: Right, but that is consistent with how the kernel would treat a rename from one mount point to another, and tools like mv can handle this in user space. Yes, that is the descri

 
103922354528_514060007658Valerie Aurora
Valerie Aurora: Ah, we did implement that in an earlier version. I dont know if we dropped the patch by accident or on purpose, but the original version is below. We will either put this fea

 
166328954574_546460007411Valerie Aurora
Valerie Aurora: Ah, we did implement that in an earlier version. I dont know if we dropped the patch by accident or on purpose, but the original version is below. We will either put this fea

 
143822384197_509760007870Valerie Aurora
On May 18, 2009 16:40 -0400, Valerie Aurora wrote: @@ -705,8 +707,9 @@ struct ext2_dir_entry_2 { #define EXT2_FT_FIFO 5 #define EXT2_FT_SOCK 6 #define EXT2_FT_SYMLINK 7 +#define EXT2

 
106228824147_502860007356Valerie Aurora
On May 18, 2009 16:40 -0400, Valerie Aurora wrote: @@ -705,8 +707,9 @@ struct ext2_dir_entry_2 { #define EXT2_FT_FIFO 5 #define EXT2_FT_SOCK 6 #define EXT2_FT_SYMLINK 7 +#define EXT2

 
196428964667_504960007089Jan Blunck
On Mon, 18 May 2009, Jan Blunck wrote: Here is another post of the VFS based union mount implementation. Traditionally the mount operation is opaque, which means that the content of the moun

 
138524494324_591360007647Jan Blunck
On Mon, 18 May 2009, Jan Blunck wrote: Here is another post of the VFS based union mount implementation. Traditionally the mount operation is opaque, which means that the content of the moun

 
157122524541_514460007428Jan Blunck
On Tue, 19 May 2009, Jan Blunck wrote: The directory in the topmost filesystem is created during lookup. The contents of the directory isnt copied up presistently at that point in time. Therefo

 
155621544666_575360007202Jan Blunck
On Tue, 19 May 2009, Jan Blunck wrote: The directory in the topmost filesystem is created during lookup. The contents of the directory isnt copied up presistently at that point in time. Therefo

 
162323144083_577060007500Jan Blunck
On Tuesday 19 May 2009, Jan Blunck wrote: So this means that the topmost branch always needs to be writable, right?  It isnt possible to make a union of two iso9660 filesystems, for

 
112523064396_579360007806Jan Blunck
On Tuesday 19 May 2009, Jan Blunck wrote: So this means that the topmost branch always needs to be writable, right?  It isnt possible to make a union of two iso9660 filesystems, for

 
188227414254_520660007845Jan Blunck
On Tuesday 19 May 2009, Jan Blunck wrote: On Tue, May 19, Arnd Bergmann wrote: This would work, but youd have to do this for each file system if you want to be able to use it as the top of

 
185322244096_539360007812Miklos Szeredi
On Tue, May 19, 2009 at 11:48:00AM +0200, Miklos Szeredi wrote: On Mon, 18 May 2009, Jan Blunck wrote: Here is another post of the VFS based union mount implementation. Traditionally t

 
182129254966_548760007217Miklos Szeredi
On Wed, May 20, 2009 at 11:05:27AM +0200, Miklos Szeredi wrote: On Tue, 19 May 2009, Valerie Aurora wrote: As Jan said, readdir() of read-only unioned file systems works with a tmpfs top la

 
169023004532_577460007875Jan Blunck
On Tuesday 19 May 2009, Jan Blunck wrote: On Tue, May 19, Arnd Bergmann wrote: This would work, but youd have to do this for each file system if you want to be able to use it as the top of

 
127421954181_567060007537Valerie Aurora
On Mon, 18 May 2009, Jan Blunck wrote: Here is another post of the VFS based union mount implementation. Is there any chance this will support NFS? I can union-mount tmpfs over nfs mounted fs, bu

 
147528704277_573060007931Miklos Szeredi
On Tue, May 19, 2009 at 11:48:00AM +0200, Miklos Szeredi wrote: On Mon, 18 May 2009, Jan Blunck wrote: Here is another post of the VFS based union mount implementation. Traditionally t

 
157429294155_567160007524Valerie Aurora
On Mon, 08 Jun 2009, Valerie Aurora wrote: On Thu, May 21, 2009 at 02:54:19PM +0200, Jan Rekorajski wrote: On Mon, 18 May 2009, Jan Blunck wrote: Here is another post of the VFS bas

 
148221424448_544860007125Miklos Szeredi
On Wed, May 20, 2009 at 11:05:27AM +0200, Miklos Szeredi wrote: On Tue, 19 May 2009, Valerie Aurora wrote: As Jan said, readdir() of read-only unioned file systems works with a tmpfs top la

 
166623204425_519760007494Valerie Aurora
On Mon, 18 May 2009, Jan Blunck wrote: Here is another post of the VFS based union mount implementation. Is there any chance this will support NFS? I can union-mount tmpfs over nfs mounted fs, bu

 
107123684690_525260007677Valerie Aurora
On Mon, 08 Jun 2009, Valerie Aurora wrote: On Tue, Jun 09, 2009 at 12:44:06AM +0200, Jan Rekorajski wrote: On Mon, 08 Jun 2009, Valerie Aurora wrote: Youll get -EBUSY on the second

 
178925144547_506660007622Valerie Aurora
On Mon, 08 Jun 2009, Valerie Aurora wrote: On Thu, May 21, 2009 at 02:54:19PM +0200, Jan Rekorajski wrote: On Mon, 18 May 2009, Jan Blunck wrote: Here is another post of the VFS bas

 
199828184550_515260007872Valerie Aurora
On Mon, 2009-05-18 at 18:08 +0200, Jan Blunck wrote: Here is another post of the VFS based union mount implementation. Awesome work, this may just get us out of a tight spot with our LiveCD. A

 
167729714014_512560007645Valerie Aurora
On Mon, 08 Jun 2009, Valerie Aurora wrote: On Tue, Jun 09, 2009 at 12:44:06AM +0200, Jan Rekorajski wrote: On Mon, 08 Jun 2009, Valerie Aurora wrote: Youll get -EBUSY on the second

 
125020844966_567660007059Jens Axboe
Hi, This is the fourth version of this patchset. Chances since v3: - Dropped a prep patch, it has been included in mainline since. - Add a work-to-do list to the bdi. This is struct bdi_work. Each

 
117023524427_586060007466Jens Axboe
btrfs puts dirty inodes on there, so it must register a thread to handle them. Also fixes failure to check bdi_init() return value, and bad inherit of - capabilities flags from the default bdi. Sign

 
153723934980_508360007223Valerie Aurora
On Mon, 2009-05-18 at 18:08 +0200, Jan Blunck wrote: Here is another post of the VFS based union mount implementation. Awesome work, this may just get us out of a tight spot with our LiveCD. A

 
170624574040_525560007529Jens Axboe
Also a debugging aid. We want to catch dirty inodes being added to backing devices that dont do writeback. Signed-off-by: Jens Axboe <jens.axboe@xxxxxxxxxx --- fs/fs-writeback.c |

 
112722864500_514260007919Jens Axboe
Hi, This is the fourth version of this patchset. Chances since v3: - Dropped a prep patch, it has been included in mainline since. - Add a work-to-do list to the bdi. This is struct bdi_work. Each

 
178826624002_575360007284Jens Axboe
Not meant for inclusion, just to monitor what is going on while testing this stuff. Signed-off-by: Jens Axboe <jens.axboe@xxxxxxxxxx --- mm/backing-dev.c | 43 ++++++++++++++++++++++++++++++++

 
181325074636_524060007240Jens Axboe
btrfs puts dirty inodes on there, so it must register a thread to handle them. Also fixes failure to check bdi_init() return value, and bad inherit of - capabilities flags from the default bdi. Sign