linux.git/fs/exofs, branch v3.15

Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd

2014-04-10T21:33:02+00:00

Pull exofs updates from Boaz Harrosh:
 "Trivial updates to exofs for 3.15-rc1

  Just a few fixes sent by people"

* 'for-linus' of git://git.open-osd.org/linux-open-osd:
  MAINTAINERS: Update email address for bhalevy
  fs: Mark functions as static in exofs/ore_raid.c
  fs: Mark function as static in exofs/super.c

mm + fs: store shadow entries in page cache

2014-04-03T23:21:01+00:00

Reclaim will be leaving shadow entries in the page cache radix tree upon
evicting the real page.  As those pages are found from the LRU, an
iput() can lead to the inode being freed concurrently.  At this point,
reclaim must no longer install shadow pages because the inode freeing
code needs to ensure the page tree is really empty.

Add an address_space flag, AS_EXITING, that the inode freeing code sets
under the tree lock before doing the final truncate.  Reclaim will check
for this flag before installing shadow pages.

Signed-off-by: Johannes Weiner 
Reviewed-by: Rik van Riel 
Reviewed-by: Minchan Kim 
Cc: Andrea Arcangeli 
Cc: Bob Liu 
Cc: Christoph Hellwig 
Cc: Dave Chinner 
Cc: Greg Thelen 
Cc: Hugh Dickins 
Cc: Jan Kara 
Cc: KOSAKI Motohiro 
Cc: Luigi Semenzato 
Cc: Mel Gorman 
Cc: Metin Doslu 
Cc: Michel Lespinasse 
Cc: Ozgun Erdogan 
Cc: Peter Zijlstra 
Cc: Roman Gushchin 
Cc: Ryan Mallon 
Cc: Tejun Heo 
Cc: Vlastimil Babka 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fs: Mark functions as static in exofs/ore_raid.c

2014-04-03T08:40:55+00:00

Mark functions as static in exofs/ore_raid.c because they are not used
outside this file.

This also eliminates the following warning in exofs/ore_raid.c:
fs/exofs/ore_raid.c:24:14: warning: no previous prototype for _raid_page_alloc [-Wmissing-prototypes]
fs/exofs/ore_raid.c:29:6: warning: no previous prototype for _raid_page_free [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria 
Reviewed-by: Josh Triplett 
Signed-off-by: Boaz Harrosh

fs: Mark function as static in exofs/super.c

2014-04-03T08:36:42+00:00

Mark function as static in exofs/super.c because it is not used outside
this file.

This also eliminates the following warning in exofs/super.c:
 fs/exofs/super.c:546:5: warning: no previous prototype \
 for __alloc_dev_table[-Wmissing-prototypes]

Signed-off-by: Rashika Kheria 
Reviewed-by: Josh Triplett 
Signed-off-by: Boaz Harrosh

exofs: Print less in r4w

2014-01-23T16:54:14+00:00

In debug mode exofs is too verbose. Hiding the real problems
remove some trivial stuff.

Also fix some other prints.

Signed-off-by: Boaz Harrosh

exofs: Allow corrupted directory entry to be empty file

2014-01-23T16:54:14+00:00

If there was an error in fetching an object or extracting
inode info from attributes. Which means corrupted storage.
Let it be an empty ZERO dated directory entry so it can be
deleted. Otherwise the all directory will be inaccessible.

This does not loose data, because if there is an orphan object
somewhere it will be recovered by fschk. But usually this only
means corrupted dir entry. The object was never generated and
only its link exist. This way we can delete the bad entry.

Signed-off-by: Boaz Harrosh

exofs: Allow O_DIRECT open

2014-01-23T16:54:11+00:00

With this minimal do nothing patch an application can open O_DIRECT
and then actually do buffered sync IO instead. But the aio API is
supported which is a good thing

Signed-off-by: Boaz Harrosh

ore: Don't crash on NULL bio in _clear_bio

2014-01-23T16:36:22+00:00

In the case of target returning OSD_ERR_PRI_CLEAR_PAGES when we
only sent for attributes don't crash on NULL bio.
This is an osd-target bug but don't crash regardless

Signed-off-by: Boaz Harrosh

ore: Fix wrong math in allocation of per device BIO

2014-01-23T08:55:03+00:00

At IO preparation we calculate the max pages at each device and
allocate a BIO per device of that size. The calculation was wrong
on some unaligned corner cases offset/length combination and would
make prepare return with -ENOMEM. This would be bad for pnfs-objects
that would in that case IO through MDS. And fatal for exofs were it
would fail writes with EIO.

Fix it by doing the proper math, that will work in all cases. (I
ran a test with all possible offset/length combinations this time
round).

Also when reading we do not need to allocate for the parity units
since we jump over them.

Also lower the max_io_length to take into account the parity pages
so not to allocate BIOs bigger than PAGE_SIZE

CC: Stable Kernel 
Signed-off-by: Boaz Harrosh

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