similar to: [PATCH] Change the check for PageReadahead into an else-if

I've recently been trying to track down the root cause of my server's persistent issue of thrashing horribly after being left inactive. It seems that the issue is likely my nightly backup schedule (using rsync) which traverses my entire 50GB home directory. I was surprised to find that rsync does not use fadvise to notify the kernel of its use-once data usage pattern. It looks like a

__ocfs2_page_mkwrite now is broken in handling file end. 1. the last page should be the page contains i_size - 1. 2. the len in the last page is also calculated wrong. So change them accordingly. Signed-off-by: Tao Ma <tao.ma at oracle.com> --- fs/ocfs2/mmap.c | 8 +++++--- 1 files changed, 5 insertions(+), 3 deletions(-) diff --git a/fs/ocfs2/mmap.c b/fs/ocfs2/mmap.c index

From: Martin Schwidefsky <schwidefsky@de.ibm.com> From: Hubertus Franke <frankeh@watson.ibm.com> From: Himanshu Raj <rhim@cc.gatech.edu> [patch 7/9] Guest page hinting: minor fault optimization. On of the challenges of hva is the cost for the state transitions. If the cost gets too big the whole concept of page state information is in question. Therefore it is very important to

From: Martin Schwidefsky <schwidefsky@de.ibm.com> From: Hubertus Franke <frankeh@watson.ibm.com> From: Himanshu Raj <rhim@cc.gatech.edu> [patch 7/9] Guest page hinting: minor fault optimization. On of the challenges of hva is the cost for the state transitions. If the cost gets too big the whole concept of page state information is in question. Therefore it is very important to

This problem is found in meego testing: http://bugs.meego.com/show_bug.cgi?id=6672 A file in btrfs is mmaped and the mmaped buffer is passed to pwrite to write to the same page of the same file. In btrfs_file_aio_write(), the pages is locked by prepare_pages(). So when btrfs_copy_from_user() is called, page fault happens and the same page needs to be locked again in filemap_fault(). The fix is to

Apparently we don''t actually close the files until we return to userspace, so stop using vfs_read in send. This is actually better for us since we can avoid all the extra logic of holding the file we''re sending open and making sure to clean it up. This will fix people who have been hitting too many files open errors when trying to send. Thanks, Signed-off-by: Josef Bacik

Just a quick update, I''ve dropped the hashing stuff in favor of doing a memcmp in the kernel to make sure the data is still the same. The thing that takes a while is reading the data up from disk, so doing a memcmp of the entire buffer isn''t that big of a deal, not to mention there''s a possiblity for malicious users if there is a problem with the hashing algorithms we

Having done a current checkout, creating a new FS and running iozone [1] on it results in an oops [2]. remove_suid is called, accessing offset 14 of a NULL pointer. Let me know if you''d like me to test any fix, do further debugging or get more information. Thanks, Daniel --- [1] # mkfs.btrfs /dev/sda4 # mount /dev/sda4 /mnt /mnt# iozone -a . --- [2] [ 899.118926] BUG: unable to

V2 -> V3: set ''err'' to -ENOMEM when kmalloc() fails. Thanks to Tao. V1 -> V2: Move kmalloc() before mutex_lock(), suggested by Arjan. file_remove_suid() should be called with i_mutex held, file_update_time() too. So move them after mutex_lock(). Plus, check the return value of kmalloc(). Signed-off-by: WANG Cong <amwang@redhat.com> Cc: Arjan

I noticed a huge problem with the free space cache that was presenting as an early ENOSPC. Turns out when writing the free space cache out I forgot to take into account pinned extents and more importantly clusters. This would result in us leaking free space everytime we unmounted the filesystem and remounted it. I fix this by making sure to check and see if the current block group has a cluster

V1->V2: Check to see if our current ppos is >= i_size after a short DIO read, just in case it was actually a short read and we need to just return. This is similar to what already happens in the write case. If we have a short read while doing O_DIRECT, instead of just returning, fallthrough and try to read the rest via buffered IO. BTRFS needs this because if we encounter a compressed or

Saurabh Nanda <saurabhnanda at gmail.com> writes: > I found something interesting in /proc/fs/cifs/Stats. Notice the > "QueryDirectories > Failed" number. This keeps increasing as along as `ls > -lR` is running. That's interesting indeed. The verbose logs and network trace would tell us more. -- Aurélien Aptel / SUSE Labs Samba Team GPG: 1839 CB5F 9F5B FB9B AA97

Hi, another issue I''m seeing with 3.0-rc2 and Xen is that there is an unexpectedly high amount of kernel reserved memory. I suspect that Linux allocates page table entries and corresponding data structures for the whole 6GB areas of the provided ''physical RAM map'' even though it has rather big unusable holes in it. [ 0.000000] BIOS-provided physical RAM map: [

Here are patches to do offline deduplication for Btrfs. It works well for the cases it''s expected to, I''m looking for feedback on the ioctl interface and such, I''m well aware there are missing features for the userspace app (like being able to set a different blocksize). If this interface is acceptable I will flesh out the userspace app a little more, but I believe the

flight 17325 linux-linus real [real] http://www.chiark.greenend.org.uk/~xensrcts/logs/17325/ Regressions :-( Tests which did not succeed and are blocking, including tests which could not be run: test-amd64-amd64-xl 9 guest-start fail REGR. vs. 12557 test-amd64-i386-xl-credit2 15 guest-stop fail REGR. vs. 12557 test-amd64-i386-xl 15 guest-stop

flight 17454 linux-linus real [real] http://www.chiark.greenend.org.uk/~xensrcts/logs/17454/ Regressions :-( Tests which did not succeed and are blocking, including tests which could not be run: test-amd64-i386-pair 17 guest-migrate/src_host/dst_host fail REGR. vs. 12557 Regressions which are regarded as allowable (not blocking): test-amd64-i386-qemut-rhel6hvm-amd 7 redhat-install fail

flight 17612 linux-linus real [real] http://www.chiark.greenend.org.uk/~xensrcts/logs/17612/ Regressions :-( Tests which did not succeed and are blocking, including tests which could not be run: test-amd64-i386-pair 17 guest-migrate/src_host/dst_host fail REGR. vs. 12557 Regressions which are regarded as allowable (not blocking): test-amd64-i386-rhel6hvm-intel 9 guest-start.2 fail

flight 17901 linux-linus real [real] http://www.chiark.greenend.org.uk/~xensrcts/logs/17901/ Regressions :-( Tests which did not succeed and are blocking, including tests which could not be run: test-amd64-i386-qemuu-rhel6hvm-intel 4 xen-install fail REGR. vs. 12557 test-amd64-i386-pv 4 xen-install fail REGR. vs. 12557 test-amd64-amd64-pv 4

flight 17916 linux-linus real [real] http://www.chiark.greenend.org.uk/~xensrcts/logs/17916/ Regressions :-( Tests which did not succeed and are blocking, including tests which could not be run: test-amd64-amd64-pv 4 xen-install fail REGR. vs. 12557 test-amd64-amd64-xl 4 xen-install fail REGR. vs. 12557 test-amd64-amd64-xl-win7-amd64 4

flight 18150 linux-linus real [real] http://www.chiark.greenend.org.uk/~xensrcts/logs/18150/ Regressions :-( Tests which did not succeed and are blocking, including tests which could not be run: test-amd64-i386-rhel6hvm-amd 7 redhat-install fail REGR. vs. 12557 test-amd64-i386-pair 17 guest-migrate/src_host/dst_host fail REGR. vs. 12557 Regressions which are regarded as