On Tue, Nov 13, 2007 at 02:30:06AM +0530, Kalpak Shah wrote:
> Recently there was discussion about an "FIle Extent MAP"(FIEMAP) ioctl for
> efficiently mapping the extents and holes of a file. This will be many times
> more efficient than FIBMAP by cutting down the number of ioctls.
>
> This pat
Hi everyone,
Ceph is a distributed network file system designed to provide excellent
performance, reliability, and scalability with POSIX semantics. I
periodically see frustration on this list with the lack of a scalable GPL
distributed file system with sufficiently robust replication and fail
On Tue, Nov 13, 2007 at 12:30:05AM +, David Howells wrote:
> Nick Piggin <[EMAIL PROTECTED]> wrote:
>
> > PAGE_CACHE_SIZE should be used to address the pagecache.
>
> Perhaps, but the function being called from there takes pages not page cache
> slots. If I have to allow for PAGE_CACHE_SIZE
Nick Piggin <[EMAIL PROTECTED]> wrote:
> PAGE_CACHE_SIZE should be used to address the pagecache.
Perhaps, but the function being called from there takes pages not page cache
slots. If I have to allow for PAGE_CACHE_SIZE > PAGE_SIZE then I need to
modify my code, if not then the assertion needs
On Mon, Nov 12, 2007 at 03:29:14PM +, David Howells wrote:
> Nick Piggin <[EMAIL PROTECTED]> wrote:
>
> > - ASSERTCMP(start + len, <=, PAGE_SIZE);
> > + ASSERTCMP(len, <=, PAGE_CACHE_SIZE);
>
> Do you guarantee this will work if PAGE_CACHE_SIZE != PAGE_SIZE? If not, you
> can't make this
On Tue, Nov 13, 2007 at 02:30:02AM +0530, Kalpak Shah wrote:
> Recently there was discussion about an "FIle Extent MAP"(FIEMAP) ioctl for
> efficiently mapping the extents and holes of a file. This will be many
> times more efficient than FIBMAP by cutting down the number of ioctls.
Thanks for sen
Recently there was discussion about an "FIle Extent MAP"(FIEMAP) ioctl for
efficiently mapping the extents and holes of a file. This will be many times
more efficient than FIBMAP by cutting down the number of ioctls.
This patch adds the FIEMAP header file in include/linux.
Signed-off-by: Andrea
Recently there was discussion about an "FIle Extent MAP"(FIEMAP) ioctl for
efficiently mapping the extents and holes of a file. This will be many times
more efficient than FIBMAP by cutting down the number of ioctls.
This patch adds the FIEMAP ioctl for ext4. The spec for the FIEMAP ioctl was
p
On Fri, 9 Nov 2007, Erez Zadok wrote:
> In message <[EMAIL PROTECTED]>, Hugh Dickins writes:
>
> > Three, I believe you need to add a flush_dcache_page(lower_page)
> > after the copy_highpage(lower_page): some architectures will need
> > that to see the new data if they have lower_page mapped (tho
Nick Piggin <[EMAIL PROTECTED]> wrote:
> - ASSERTCMP(start + len, <=, PAGE_SIZE);
> + ASSERTCMP(len, <=, PAGE_CACHE_SIZE);
Do you guarantee this will work if PAGE_CACHE_SIZE != PAGE_SIZE? If not, you
can't make this particular change.
Do we ever intend to have PAGE_CACHE_SIZE != PAGE_SI
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