linux-stable.git/fs/hpfs, branch linux-3.13.y

hpfs: remember free space

2014-02-06T19:34:10+00:00

commit 2cbe5c76fc5e38e9af4b709593146e4b8272b69e upstream.

Previously, hpfs scanned all bitmaps each time the user asked for free
space using statfs.  This patch changes it so that hpfs scans the
bitmaps only once, remembes the free space and on next invocation of
statfs it returns the value instantly.

New versions of wine are hammering on the statfs syscall very heavily,
making some games unplayable when they're stored on hpfs, with load
times in minutes.

This should be backported to the stable kernels because it fixes
user-visible problem (excessive level load times in wine).

Signed-off-by: Mikulas Patocka 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

locks: break delegations on any attribute modification

2013-11-09T05:16:44+00:00

NFSv4 uses leases to guarantee that clients can cache metadata as well
as data.

Cc: Mikulas Patocka 
Cc: David Howells 
Cc: Tyler Hicks 
Cc: Dustin Kirkland 
Acked-by: Jeff Layton 
Signed-off-by: J. Bruce Fields 
Signed-off-by: Al Viro

hpfs: make freeing sbi and codetables rcu-delayed

2013-10-25T03:43:26+00:00

makes ->d_hash() and ->d_compare() safety in RCU mode independent
from vfsmount_lock

Signed-off-by: Al Viro

truncate: drop 'oldsize' truncate_pagecache() parameter

2013-09-12T22:38:02+00:00

truncate_pagecache() doesn't care about old size since commit
cedabed49b39 ("vfs: Fix vmtruncate() regression").  Let's drop it.

Signed-off-by: Kirill A. Shutemov 
Cc: OGAWA Hirofumi 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge branch 'hpfs' from Mikulas Patocka

2013-07-04T18:22:55+00:00

Merge hpfs patches from Mikulas Patocka.

* emailed patches from Mikulas Patocka :
  hpfs: implement prefetch to improve performance
  hpfs: use mpage
  hpfs: better test for errors

hpfs: implement prefetch to improve performance

2013-07-04T18:22:46+00:00

This patch implements prefetch to improve performance.  It helps mostly
when scanning the bitmaps to calculate free space.

Signed-off-by: Mikulas Patocka 
Signed-off-by: Linus Torvalds

hpfs: use mpage

2013-07-04T18:22:46+00:00

Use the mpage interface to improve performance.

Signed-off-by: Mikulas Patocka 
Signed-off-by: Linus Torvalds

hpfs: better test for errors

2013-07-04T18:22:46+00:00

The test if bitmap access is out of bound could errorneously pass if the
device size is divisible by 16384 sectors and we are asking for one bitmap
after the end.

Check for invalid size in the superblock. Invalid size could cause integer
overflows in the rest of the code.

Signed-off-by: Mikulas Patocka 
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds

Don't pass inode to ->d_hash() and ->d_compare()

2013-06-29T08:57:36+00:00

Instances either don't look at it at all (the majority of cases) or
only want it to find the superblock (which can be had as dentry->d_sb).
A few cases that want more are actually safe with dentry->d_inode -
the only precaution needed is the check that it hadn't been replaced with
NULL by rmdir() or by overwriting rename(), which case should be simply
treated as cache miss.

Signed-off-by: Linus Torvalds 
Signed-off-by: Al Viro

[readdir] convert hpfs

2013-06-29T08:56:51+00:00

Signed-off-by: Al Viro