linux-stable.git/fs/hpfs, branch linux-3.14.y

hpfs: update ctime and mtime on directory modification

2015-09-21T17:02:21+00:00

commit f49a26e7718dd30b49e3541e3e25aecf5e7294e2 upstream.

Update ctime and mtime when a directory is modified. (though OS/2 doesn't
update them anyway)

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

hpfs: hpfs_error: Remove static buffer, use vsprintf extension %pV instead

2015-08-03T16:29:59+00:00

commit a28e4b2b18ccb90df402da3f21e1a83c9d4f8ec1 upstream.

Removing unnecessary static buffers is good.
Use the vsprintf %pV extension instead.

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

hpfs: optimize quad buffer loading

2014-02-03T00:24:07+00:00

HPFS needs to load 4 consecutive 512-byte sectors when accessing the
directory nodes or bitmaps.  We can't switch to 2048-byte block size
because files are allocated in the units of 512-byte sectors.

Previously, the driver would allocate a 2048-byte area using kmalloc,
copy the data from four buffers to this area and eventually copy them
back if they were modified.

In the current implementation of the buffer cache, buffers are allocated
in the pagecache.  That means that 4 consecutive 512-byte buffers are
stored in consecutive areas in the kernel address space.  So, we don't
need to allocate extra memory and copy the content of the buffers there.

This patch optimizes the code to avoid copying the buffers.  It checks
if the four buffers are stored in contiguous memory - if they are not,
it falls back to allocating a 2048-byte area and copying data there.

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

hpfs: remember free space

2014-02-03T00:24:07+00:00

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

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