Hello,
At all other places, j_list_lock is being held when b_transaction is
being modified. But at one place in transaction.c, this lock is not
held. Also, the journal-head.h file which defines journal_head
structure says that b_transaction should be protected by two locks -
j_list_lock and jbd_lo
On Fri, Aug 03, 2007 at 01:59:53PM +0200, Michael Kerrisk wrote:
> >
> > There is a typo above. We have "file system" repeated twice in above
> > sentence. Second one should be "file".
> >
>
> Thanks for catching that.
>
> Okay -- it seems that this page is pretty much ready for publication,
>
Hi Michael,
On Mon, Jul 30, 2007 at 09:44:10PM +0200, Michael Kerrisk wrote:
> Amit, David,
>
> I've edited the previous version of the page, adding David's license, and
> integrating Amit's comments. I've also added a few new FIXMES. ("FIXME
> Amit" again.)
Ok, Thanks!
> Could you please re
Hi Michael,
On Mon, Jul 30, 2007 at 09:43:08PM +0200, Michael Kerrisk wrote:
> Hello Amit.
>
> > On Mon, Jul 23, 2007 at 08:09:45AM +0200, Michael Kerrisk wrote:
> >> Amit,
> >>
> >> I've taken the page that you sent and made various minor formatting and
> >> wording fixes. I've also added vario
Hi Michael,
On Mon, Jul 23, 2007 at 08:09:45AM +0200, Michael Kerrisk wrote:
> Amit,
>
> I've taken the page that you sent and made various minor formatting and
> wording fixes. I've also added various FIXMEs to the page. Some of these
> ("FIXME .") are things that I need to check up later. So
On Sat, Jul 14, 2007 at 10:23:42AM +0200, Michael Kerrisk wrote:
> [CC += [EMAIL PROTECTED]
>
> Amit,
Hi Michael,
> Thanks for this page. I will endeavour to review it in
> the coming days. In the meantime, the better address to CC
> me on fot man pages stuff is [EMAIL PROTECTED]
Sure.
BTW
From: Amit Arora <[EMAIL PROTECTED]>
Change on-disk format for extent to represent uninitialized/initialized extents
This change was suggested by Andreas Dilger.
This patch changes the EXT_MAX_LEN value and extent code which marks/checks
uninitialized extents. With this change it will be possibl
From: Amit Arora <[EMAIL PROTECTED]>
write support for preallocated blocks
This patch adds write support to the uninitialized extents that get
created when a preallocation is done using fallocate(). It takes care of
splitting the extents into multiple (upto three) extents and merging the
new spl
From: Amit Arora <[EMAIL PROTECTED]>
fallocate support in ext4
This patch implements ->fallocate() inode operation in ext4. With this
patch users of ext4 file systems will be able to use fallocate() system
call for persistent preallocation. Current implementation only supports
preallocation for r
From: Amit Arora <[EMAIL PROTECTED]>
sys_fallocate() implementation on i386, x86_64 and powerpc
fallocate() is a new system call being proposed here which will allow
applications to preallocate space to any file(s) in a file system.
Each file system implementation that wants to use this feature w
Following is the modified version of the manpage originally submitted by
David Chinner. Please use `nroff -man fallocate.2 | less` to view.
Following changed from TAKE7:
* Removed FALLOC_ALLOCATE and FALLOCATE_RESV_SPACE modes.
* Described only single flag for mode, i.e. FALLOC_FL_KEEP_SIZE.
* s/z
This is the latest fallocate patchset and is based on 2.6.22.
* Following are the changes from TAKE7:
1) Updated the man page.
2) Merged "revalidate write permissions" patch with the main falloc patch.
3) Added linux/falloc.h and moved FALLOC_FL_KEEP_SIZE flag to it.
Also removed the two modes
On Fri, Jul 13, 2007 at 02:21:37PM +0100, Christoph Hellwig wrote:
> On Fri, Jul 13, 2007 at 06:18:47PM +0530, Amit K. Arora wrote:
> > From: David P. Quigley <[EMAIL PROTECTED]>
> >
> > Revalidate the write permissions for fallocate(2), in case security policy
&g
On Sat, Jul 14, 2007 at 12:06:51AM +1000, David Chinner wrote:
> On Fri, Jul 13, 2007 at 06:16:01PM +0530, Amit K. Arora wrote:
> > Following is the modified version of the manpage originally submitted by
> > David Chinner. Please use `nroff -man fallocate.2 | less` to view.
> &g
On Fri, Jul 13, 2007 at 02:21:19PM +0100, Christoph Hellwig wrote:
> On Fri, Jul 13, 2007 at 06:17:55PM +0530, Amit K. Arora wrote:
> > /*
> > + * sys_fallocate - preallocate blocks or free preallocated blocks
> > + * @fd: the file descriptor
> > + * @mode: mod
From: Amit Arora <[EMAIL PROTECTED]>
Change on-disk format for extent to represent uninitialized/initialized extents
This change was suggested by Andreas Dilger.
This patch changes the EXT_MAX_LEN value and extent code which marks/checks
uninitialized extents. With this change it will be possibl
From: Amit Arora <[EMAIL PROTECTED]>
write support for preallocated blocks
This patch adds write support to the uninitialized extents that get
created when a preallocation is done using fallocate(). It takes care of
splitting the extents into multiple (upto three) extents and merging the
new spl
From: Amit Arora <[EMAIL PROTECTED]>
fallocate support in ext4
This patch implements ->fallocate() inode operation in ext4. With this
patch users of ext4 file systems will be able to use fallocate() system
call for persistent preallocation. Current implementation only supports
preallocation for r
From: David P. Quigley <[EMAIL PROTECTED]>
Revalidate the write permissions for fallocate(2), in case security policy has
changed since the files were opened.
Acked-by: James Morris <[EMAIL PROTECTED]>
Signed-off-by: David P. Quigley <[EMAIL PROTECTED]>
---
fs/open.c |3 +++
1 files changed
From: Amit Arora <[EMAIL PROTECTED]>
sys_fallocate() implementation on i386, x86_64 and powerpc
fallocate() is a new system call being proposed here which will allow
applications to preallocate space to any file(s) in a file system.
Each file system implementation that wants to use this feature w
Following is the modified version of the manpage originally submitted by
David Chinner. Please use `nroff -man fallocate.2 | less` to view.
This includes changes suggested by Heikki Orsila and Barry Naujok.
.TH fallocate 2
.SH NAME
fallocate \- allocate or remove file space
.SH SYNOPSIS
.nf
.B #
This is the latest fallocate patchset and is based on 2.6.22.
* Following are the changes from TAKE6:
1) We now just have two modes (and no deallocation modes).
2) Updated the man page
3) Added a new patch submitted by David P. Quigley (Patch 3/6).
4) Used EXT_INIT_MAX_LEN instead of 0x8000 in Pa
On Thu, Jul 12, 2007 at 11:13:34PM +1000, David Chinner wrote:
> On Thu, Jul 12, 2007 at 12:58:13PM +0530, Suparna Bhattacharya wrote:
> >
> > Why don't we just merge the interface for preallocation (essentially
> > enough to satisfy posix_fallocate() and the simple XFS requirement for
> > space
On Thu, Jul 12, 2007 at 08:56:30AM -0400, David Patrick Quigley wrote:
> From: David P. Quigley <[EMAIL PROTECTED]>
>
> Revalidate the write permissions for fallocate(2), in case security policy has
> changed since the files were opened.
Thanks for your patch! Will include it in the patchset.
--
On Thu, Jul 12, 2007 at 12:58:13PM +0530, Suparna Bhattacharya wrote:
> On Wed, Jul 11, 2007 at 10:03:12AM +0100, Christoph Hellwig wrote:
> > On Tue, Jul 03, 2007 at 05:16:50PM +0530, Amit K. Arora wrote:
> > > Well, if you see the modes proposed using above flags :
&g
On Wed, Jul 11, 2007 at 12:37:01AM +0300, Heikki Orsila wrote:
> On Wed, Jul 11, 2007 at 01:48:20AM +0530, Amit K. Arora wrote:
> > .BI "int syscall(int, int fd, int mode, loff_t offset, loff_t len);
>
> Correction: "int syscall(int fd, int mode, ...)",
Here
On Wed, Jul 11, 2007 at 12:10:34PM +1000, Stephen Rothwell wrote:
> On Wed, 11 Jul 2007 01:50:00 +0530 "Amit K. Arora" <[EMAIL PROTECTED]> wrote:
> >
> > --- linux-2.6.22.orig/arch/x86_64/ia32/sys_ia32.c
> > +++ linux-2.6.22/arch/x86_64/ia32/sys_ia32.c
>
From: Amit Arora <[EMAIL PROTECTED]>
Change on-disk format for extent to represent uninitialized/initialized extents
This change was suggested by Andreas Dilger as part of the following
post:
http://www.mail-archive.com/[EMAIL PROTECTED]/msg02445.html
This patch changes the EXT_MAX_LEN value and
From: Amit Arora <[EMAIL PROTECTED]>
Support new values of mode in ext4.
This patch supports new mode values/flags in ext4. With this patch ext4
will be able to support FALLOC_ALLOCATE and FALLOC_RESV_SPACE modes. Supporting
FALLOC_DEALLOCATE and FALLOC_UNRESV_SPACE fallocate modes in ext4 is a wo
From: Amit Arora <[EMAIL PROTECTED]>
write support for preallocated blocks
This patch adds write support to the uninitialized extents that get
created when a preallocation is done using fallocate(). It takes care of
splitting the extents into multiple (upto three) extents and merging the
new spl
From: Amit Arora <[EMAIL PROTECTED]>
fallocate support in ext4
This patch implements ->fallocate() inode operation in ext4. With this
patch users of ext4 file systems will be able to use fallocate() system
call for persistent preallocation. Current implementation only supports
preallocation for r
From: Amit Arora <[EMAIL PROTECTED]>
Implement new flags and values for mode argument.
This patch implements the new flags and values for the "mode" argument
of the fallocate system call. It is based on the discussion between
Andreas Dilger and David Chinner on the man page proposed (by the later
From: Amit Arora <[EMAIL PROTECTED]>
sys_fallocate() implementation on i386, x86_64 and powerpc
fallocate() is a new system call being proposed here which will allow
applications to preallocate space to any file(s) in a file system.
Each file system implementation that wants to use this feature w
Following is the modified version of the manpage originally submitted by
David Chinner. Please use `nroff -man fallocate.2 | less` to view.
.TH fallocate 2
.SH NAME
fallocate \- allocate or remove file space
.SH SYNOPSIS
.nf
.B #include
.PP
.BI "int syscall(int, int fd, int mode, loff_t offset,
This is the latest fallocate patchset and is rebased to 2.6.22.
Following are the changes from TAKE5:
1) Rebased to 2.6.22
2) Added compat wrapper for x86_64
3) Dropped s390 and ia64 patches, since the platform maintaners can
add the support for fallocate once it is in mainline.
4) Added a chan
On Tue, Jul 03, 2007 at 11:31:07AM +0100, Christoph Hellwig wrote:
> On Tue, Jul 03, 2007 at 03:38:48PM +0530, Amit K. Arora wrote:
> > > FA_FL_DEALLOC 0x01 /* deallocate unwritten extent (default
> > > allocate) */
> > > FA_FL_KEEP_SIZE 0x02 /* k
On Sat, Jun 30, 2007 at 12:52:46PM -0400, Andreas Dilger wrote:
> The @mode flags that are currently under consideration are (AFAIK):
>
> FA_FL_DEALLOC 0x01 /* deallocate unwritten extent (default allocate)
> */
> FA_FL_KEEP_SIZE 0x02 /* keep size for EOF {pre,de}alloc (default chan
On Mon, Jul 02, 2007 at 08:55:43AM +1000, David Chinner wrote:
> On Sat, Jun 30, 2007 at 11:21:11AM +0100, Christoph Hellwig wrote:
> > On Tue, Jun 26, 2007 at 04:02:47PM +0530, Amit K. Arora wrote:
> > > > Can you clarify - what is the current behaviour when ENOSPC (o
On Wed, Jun 27, 2007 at 09:18:04AM +1000, David Chinner wrote:
> On Tue, Jun 26, 2007 at 11:34:13AM -0400, Andreas Dilger wrote:
> > On Jun 26, 2007 16:02 +0530, Amit K. Arora wrote:
> > > On Mon, Jun 25, 2007 at 03:46:26PM -0600, Andreas Dilger wrote:
> > > >
On Wed, Jun 27, 2007 at 10:04:56AM +1000, David Chinner wrote:
> On Wed, Jun 27, 2007 at 12:59:08AM +0530, Amit K. Arora wrote:
> > On Tue, Jun 26, 2007 at 12:14:00PM -0400, Andreas Dilger wrote:
> > > On Jun 26, 2007 17:37 +0530, Amit K. Arora wrote:
> > > > I think
On Thu, Jun 28, 2007 at 02:55:43AM -0700, Andrew Morton wrote:
> On Mon, 25 Jun 2007 18:58:10 +0530 "Amit K. Arora" <[EMAIL PROTECTED]> wrote:
>
> > N O T E:
> > ---
> > 1) Only Patches 4/7 and 7/7 are NEW. Rest of them are _already_ part
> >
On Tue, Jun 26, 2007 at 12:14:00PM -0400, Andreas Dilger wrote:
> On Jun 26, 2007 17:37 +0530, Amit K. Arora wrote:
> > Hmm.. I am thinking of a scenario when the file system supports some
> > individual flags, but does not support a particular combination of them.
> >
On Tue, Jun 26, 2007 at 11:42:50AM -0400, Andreas Dilger wrote:
> On Jun 26, 2007 16:15 +0530, Amit K. Arora wrote:
> > On Mon, Jun 25, 2007 at 03:52:39PM -0600, Andreas Dilger wrote:
> > > In XFS one of the (many) ALLOC modes is to zero existing data on allocate.
> > &
On Tue, Jun 26, 2007 at 11:34:13AM -0400, Andreas Dilger wrote:
> On Jun 26, 2007 16:02 +0530, Amit K. Arora wrote:
> > On Mon, Jun 25, 2007 at 03:46:26PM -0600, Andreas Dilger wrote:
> > > Can you clarify - what is the current behaviour when ENOSPC (or some other
> > &
On Mon, Jun 25, 2007 at 03:56:25PM -0600, Andreas Dilger wrote:
> On Jun 25, 2007 19:20 +0530, Amit K. Arora wrote:
> > @@ -2499,7 +2500,8 @@ long ext4_fallocate(struct inode *inode,
> > * currently supporting (pre)allocate mode for extent-based
> > * files _only_
&
On Mon, Jun 25, 2007 at 03:52:39PM -0600, Andreas Dilger wrote:
> On Jun 25, 2007 19:15 +0530, Amit K. Arora wrote:
> > +#define FA_FL_DEALLOC 0x01 /* default is allocate */
> > +#define FA_FL_KEEP_SIZE0x02 /* default is extend/shrink size */
> > +#define FA
On Mon, Jun 25, 2007 at 03:46:26PM -0600, Andreas Dilger wrote:
> On Jun 25, 2007 20:33 +0530, Amit K. Arora wrote:
> > I have not implemented FA_FL_FREE_ENOSPC and FA_ZERO_SPACE flags yet, as
> > *suggested* by Andreas in http://lkml.org/lkml/2007/6/14/323 post.
> > If it
I have not implemented FA_FL_FREE_ENOSPC and FA_ZERO_SPACE flags yet, as
*suggested* by Andreas in http://lkml.org/lkml/2007/6/14/323 post.
If it is decided that these flags are also needed, I will update this
patch. Thanks!
On Mon, Jun 25, 2007 at 07:15:00PM +0530, Amit K. Arora wrote
Support new values of mode in ext4.
This patch supports new mode values/flags in ext4. With this patch ext4
will be able to support FA_ALLOCATE and FA_RESV_SPACE modes. Supporting
FA_DEALLOCATE and FA_UNRESV_SPACE fallocate modes in ext4 is a work for
future.
Signed-off-by: Amit Arora <[EMAIL PRO
This patch adds write support to the uninitialized extents that get
created when a preallocation is done using fallocate(). It takes care of
splitting the extents into multiple (upto three) extents and merging the
new split extents with neighbouring ones, if possible.
Changelog:
-
Changes
This patch implements ->fallocate() inode operation in ext4. With this
patch users of ext4 file systems will be able to use fallocate() system
call for persistent preallocation.
Current implementation only supports preallocation for regular files
(directories not supported as of date) with extent
Implement new flags and values for mode argument.
This patch implements the new flags and values for the "mode" argument
of the fallocate system call. It is based on the discussion between
Andreas Dilger and David Chinner on the man page proposed (by the later)
on fallocate.
Signed-off-by: Amit A
fallocate() on ia64
ia64 fallocate syscall support.
Signed-off-by: Dave Chinner <[EMAIL PROTECTED]>
Index: linux-2.6.22-rc4/arch/ia64/kernel/entry.S
===
--- linux-2.6.22-rc4.orig/arch/ia64/kernel/entry.S 2007-06-11
17:22:15.00
This is the patch suggested by Martin Schwidefsky to support
sys_fallocate() on s390(x) platform.
He also suggested a wrapper in glibc to handle this system call on
s390. Posting it here so that we get feedback for this too.
.globl __fallocate
ENTRY(__fallocate)
stm %r6,%r7,28(%r15)
This patch implements sys_fallocate() and adds support on i386, x86_64
and powerpc platforms.
Changelog:
-
Changes from Take3 to Take4:
1) Do not update c/mtime. Let each filesystem update ctime (update of
mtime will not be required for allocation since we touch only
metadata/inod
N O T E:
---
1) Only Patches 4/7 and 7/7 are NEW. Rest of them are _already_ part
of ext4 patch queue git tree hosted by Ted.
2) The above new patches (4/7 and 7/7) are based on the dicussion
between Andreas Dilger and David Chinner on the mode argument,
when later posted a man page o
On Sat, May 12, 2007 at 06:01:57PM +1000, David Chinner wrote:
> On Fri, May 11, 2007 at 04:33:01PM +0530, Suparna Bhattacharya wrote:
> > On Fri, May 11, 2007 at 08:39:50AM +1000, David Chinner wrote:
> > > All I'm really interested in right now is that the fallocate
> > > _interface_ can be used
This patch adds write support to the uninitialized extents that get
created when a preallocation is done using fallocate(). It takes care of
splitting the extents into multiple (upto three) extents and merging the
new split extents with neighbouring ones, if possible.
Changelog:
-
Changes
This patch implements ->fallocate() inode operation in ext4. With this
patch users of ext4 file systems will be able to use fallocate() system
call for persistent preallocation.
Current implementation only supports preallocation for regular files
(directories not supported as of date) with extent
This patch adds a check for overlap of extents and cuts short the
new extent to be inserted, if there is a chance of overlap.
Changelog:
-
Changes from Take3 to Take4:
- no change -
Changes from Take2 to Take3:
1) Patch rebased to 2.6.22-rc1 kernel.
Changes from Take1 to Take2:
1) As su
Here is the 2.6.22-rc1 version of David's patch: add fallocate() on ia64
From: David Chinner <[EMAIL PROTECTED]>
Subject: [PATCH] ia64 fallocate syscall
Cc: "Amit K. Arora" <[EMAIL PROTECTED]>,
[EMAIL PROTECTED], [EMAIL PROTECTED],
[EMAIL PROTECTE
This is the patch suggested by Martin Schwidefsky to support
sys_fallocate() on s390(x) platform.
He also suggested a wrapper in glibc to handle this system call on
s390. Posting it here so that we get feedback for this too.
.globl __fallocate
ENTRY(__fallocate)
stm %r6,%r7,28(%r15)
This patch implements sys_fallocate() and adds support on i386, x86_64
and powerpc platforms.
Changelog:
-
Changes from Take3 to Take4:
1) Do not update c/mtime. Let each filesystem update ctime (update of
mtime will not be required for allocation since we touch only
metadata/inod
Description:
---
fallocate() is a new system call being proposed here which will allow
applications to preallocate space to any file(s) in a file system.
Each file system implementation that wants to use this feature will need
to support an inode operation called fallocate.
Applications ca
On Thu, May 17, 2007 at 09:40:36AM +1000, David Chinner wrote:
> On Wed, May 16, 2007 at 07:21:16AM -0500, Dave Kleikamp wrote:
> > On Wed, 2007-05-16 at 13:16 +1000, David Chinner wrote:
> > > On Wed, May 16, 2007 at 01:33:59AM +0530, Amit K. Arora wrote:
> >
> > &
On Wed, May 16, 2007 at 07:21:16AM -0500, Dave Kleikamp wrote:
> On Wed, 2007-05-16 at 13:16 +1000, David Chinner wrote:
> > On Wed, May 16, 2007 at 01:33:59AM +0530, Amit K. Arora wrote:
>
> > > Following changes were made to the previous version:
> > > 1) Added de
On Tue, May 15, 2007 at 05:42:46PM -0700, Mingming Cao wrote:
> On Wed, 2007-05-16 at 01:33 +0530, Amit K. Arora wrote:
> > This patch implements sys_fallocate() and adds support on i386, x86_64
> > and powerpc platforms.
>
> > @@ -1137,6 +1148,8 @@ struct inode_oper
This patch adds write support to the uninitialized extents that get
created when a preallocation is done using fallocate(). It takes care of
splitting the extents into multiple (upto three) extents and merging the
new split extents with neighbouring ones, if possible.
Changelog:
-
Note: Th
This patch implements ->fallocate() inode operation in ext4. With this
patch users of ext4 file systems will be able to use fallocate() system
call for persistent preallocation.
Current implementation only supports preallocation for regular files
(directories not supported as of date) with extent
This patch adds a check for overlap of extents and cuts short the
new extent to be inserted, if there is a chance of overlap.
Changelog:
-
Note: The changes below are from the initial post (dated 26th April,
2007) and _not_ from TAKE2. The only difference from TAKE2 is the kernel
version o
This is the patch suggested by Martin Schwidefsky to support
sys_fallocate() on s390(x) platform.
He also suggested a wrapper in glibc to handle this system call on
s390. Posting it here so that we get feedback for this too.
.globl __fallocate
ENTRY(__fallocate)
stm %r6,%r7,28(%r15)
This patch implements sys_fallocate() and adds support on i386, x86_64
and powerpc platforms.
Changelog:
-
Note: The changes below are from the initial post (dated 26th April,
2007) and _not_ from TAKE2. The only difference from TAKE2 is the kernel
version on which this patch is based. TAK
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
P L E A S EN O T E :
***
1. Patches have been now rebased to 2.6.22-rc1 kernel. Earlier they were
based on 2.6.21.
2. An unnecessary export of symbol is removed from the ext4 preallocate
patch. Details
On Tue, May 15, 2007 at 09:44:36AM +1000, Stephen Rothwell wrote:
> On Mon, 14 May 2007 20:15:24 +0530 "Amit K. Arora" <[EMAIL PROTECTED]> wrote:
> >
> > This patch implements sys_fallocate() and adds support on i386, x86_64
> > and powerpc platforms.
>
On Tue, May 15, 2007 at 12:31:21AM -0600, Andreas Dilger wrote:
> On May 14, 2007 18:59 +0530, Amit K. Arora wrote:
> > asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len)
> >
> > fd: The descriptor of the open file.
> >
> > mode*: T
On Mon, May 14, 2007 at 08:18:34PM +0530, Amit K. Arora wrote:
> This is the patch suggested by Martin Schwidefsky. Here are the comments
> and patch from him.
Martin also suggested a wrapper in glibc to handle this system call on
s390. Posting it here so that we get feedback for this too
This patch adds write support to the uninitialized extents that get
created when a preallocation is done using fallocate(). It takes care of
splitting the extents into multiple (upto three) extents and merging the
new split extents with neighbouring ones, if possible.
Changelog:
-
1) Repl
This patch implements ->fallocate() inode operation in ext4. With this
patch users of ext4 file systems will be able to use fallocate() system
call for persistent preallocation.
Current implementation only supports preallocation for regular files
(directories not supported as of date) with extent
This patch adds a check for overlap of extents and cuts short the
new extent to be inserted, if there is a chance of overlap.
Changelog:
-
As suggested by Andrew, a check for wrap though zero has been added.
Here is the new patch:
Signed-off-by: Amit Arora <[EMAIL PROTECTED]>
---
fs/ext
This is the patch suggested by Martin Schwidefsky. Here are the comments
and patch from him.
-
From: Martin Schwidefsky <[EMAIL PROTECTED]>
This patch implements support of fallocate system call on s390(x)
platform. A wrapper is added to address the issue which s390 ABI has
with the a
This patch implements sys_fallocate() and adds support on i386, x86_64
and powerpc platforms.
Changelog:
-
Following changes were made to the previous version:
1) Added description before sys_fallocate() definition.
2) Return EINVAL for len<=0 (With new draft that Ulrich pointed to,
This is the new set of patches which take care of the review comments
received from the community (mainly from Andrew).
Description:
---
fallocate() is a new system call being proposed here which will allow
applications to preallocate space to any file(s) in a file system.
Each file system
On Thu, May 10, 2007 at 10:59:26AM +1000, David Chinner wrote:
> On Wed, May 09, 2007 at 09:31:02PM +0530, Amit K. Arora wrote:
> > I have the updated patches ready which take care of Andrew's comments.
> > Will run some tests and post them soon.
> >
> > But, be
I have the updated patches ready which take care of Andrew's comments.
Will run some tests and post them soon.
But, before submitting these patches, I think it will be better to finalize
on certain things which might be worth some discussion here:
1) Should the file size change when preallocation
On Wed, May 09, 2007 at 09:37:22PM +1000, Paul Mackerras wrote:
> Suparna Bhattacharya writes:
>
> > > Of course the interface used by an application program would have the
> > > fd first. Glibc can do the translation.
> >
> > I think that was understood.
>
> OK, then what does it matter what t
On Mon, May 07, 2007 at 10:24:37AM -0500, Dave Kleikamp wrote:
> On Mon, 2007-05-07 at 17:37 +0530, Amit K. Arora wrote:
> > On Thu, May 03, 2007 at 09:31:33PM -0700, Andrew Morton wrote:
> > > On Thu, 26 Apr 2007 23:43:32 +0530 "Amit K. Arora" <[EMAIL PROTECTED]
On Mon, May 07, 2007 at 03:40:26PM +0300, Pekka Enberg wrote:
> On 4/26/07, Amit K. Arora <[EMAIL PROTECTED]> wrote:
> > /*
> >+ * ext4_ext_try_to_merge:
> >+ * tries to merge the "ex" extent to the next extent in the tree.
> >+ * It always tries t
On Thu, May 03, 2007 at 09:32:38PM -0700, Andrew Morton wrote:
> On Thu, 26 Apr 2007 23:46:23 +0530 "Amit K. Arora" <[EMAIL PROTECTED]> wrote:
> > + */
> > +int ext4_ext_try_to_merge(struct inode *inode,
> > +
On Thu, May 03, 2007 at 09:31:33PM -0700, Andrew Morton wrote:
> On Thu, 26 Apr 2007 23:43:32 +0530 "Amit K. Arora" <[EMAIL PROTECTED]> wrote:
>
> > This patch has the ext4 implemtation of fallocate system call.
> >
> > ...
> >
> > +
On Thu, May 03, 2007 at 09:30:02PM -0700, Andrew Morton wrote:
> On Thu, 26 Apr 2007 23:41:01 +0530 "Amit K. Arora" <[EMAIL PROTECTED]> wrote:
>
> > +unsigned int ext4_ext_check_overlap(struct inode *inode,
> > +
On Thu, May 03, 2007 at 11:28:15PM -0700, Andrew Morton wrote:
> The above opengroup page only permits S_ISREG. Preallocating directories
> sounds quite useful to me, although it's something which would be pretty
> hard to emulate if the FS doesn't support it. And there's a decent case to
> be ma
Andrew,
Thanks for the review comments!
On Thu, May 03, 2007 at 09:29:55PM -0700, Andrew Morton wrote:
> On Thu, 26 Apr 2007 23:33:32 +0530 "Amit K. Arora" <[EMAIL PROTECTED]> wrote:
>
> > This patch implements the fallocate() system call and adds support for
On Sun, Apr 29, 2007 at 10:25:59PM -0700, Chris Wedgwood wrote:
> On Mon, Apr 30, 2007 at 10:47:02AM +1000, David Chinner wrote:
>
> > For FA_ALLOCATE, it's supposed to change the file size if we
> > allocate past EOF, right?
>
> I would argue no. Use truncate for that.
The patch I posted for e
This patch adds write support for preallocated (using fallocate system
call) blocks/extents. The preallocated extents in ext4 are marked
"uninitialized", hence they need special handling especially while
writing to them. This patch takes care of that.
Signed-off-by: Amit Arora <[EMAIL PROTECTED]>
This patch has the ext4 implemtation of fallocate system call.
Signed-off-by: Amit Arora <[EMAIL PROTECTED]>
---
fs/ext4/extents.c | 201 +++-
fs/ext4/file.c |1
include/linux/ext4_fs.h |7 +
include/linux/ext4_f
This is a fix for an extent-overlap bug. The fallocate() implementation
on ext4 depends on this bugfix. Though this fix had been posted earlier,
but because it is still not part of mainline code, I have attached it
here too.
Signed-off-by: Amit Arora <[EMAIL PROTECTED]>
---
fs/ext4/extents.c
This patch implements support of fallocate system call on s390(x)
platform. A wrapper is added to address the issue which s390 ABI has
with "preferred" ordering of arguments in this system call (i.e. int,
int, loff_t, loff_t).
I will request s390 experts to please review this code and verify if
th
This patch implements the fallocate() system call and adds support for
i386, x86_64 and powerpc.
NOTE: It is based on 2.6.21 kernel version.
Signed-off-by: Amit Arora <[EMAIL PROTECTED]>
---
arch/i386/kernel/syscall_table.S |1
arch/powerpc/kernel/sys_ppc32.c |7 ++
arch/x86_64/ker
Based on the discussion, this new patchset uses following as the
interface for fallocate() system call:
asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len)
It seems that only s390 architecture has a problem with such a layout of
arguments in fallocate(). Thus for s390, we
On Fri, Apr 20, 2007 at 10:59:18AM -0400, Jakub Jelinek wrote:
> On Fri, Apr 20, 2007 at 07:21:46PM +0530, Amit K. Arora wrote:
> > Ok.
> > In this case we may have to consider following things:
> >
> > 1) Obviously, for this glibc will have to call fallocate()
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