linux-stable.git/fs/fuse/dev.c, branch v3.18.76

fuse: notify: don't move pages

2015-03-28T13:33:41+00:00

[ Upstream commit 0d2783626a53d4c922f82d51fa675cb5d13f0d36 ]

fuse_try_move_page() is not prepared for replacing pages that have already
been read.

Reported-by: Al Viro 
Signed-off-by: Miklos Szeredi 
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin

fuse: set stolen page uptodate

2015-03-28T13:33:33+00:00

[ Upstream commit aa991b3b267e24f578bac7b09cc57579b660304b ]

Regular pipe buffers' ->steal method (generic_pipe_buf_steal()) doesn't set
PG_uptodate.

Don't warn on this condition, just set the uptodate flag.

Signed-off-by: Miklos Szeredi 
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse

2014-07-15T15:57:17+00:00

Pull fuse fixes from Miklos Szeredi:
 "This contains miscellaneous fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  fuse: replace count*size kzalloc by kcalloc
  fuse: release temporary page if fuse_writepage_locked() failed
  fuse: restructure ->rename2()
  fuse: avoid scheduling while atomic
  fuse: handle large user and group ID
  fuse: inode: drop cast
  fuse: ignore entry-timeout on LOOKUP_REVAL
  fuse: timeout comparison fix

fuse: avoid scheduling while atomic

2014-07-07T13:28:51+00:00

As reported by Richard Sharpe, an attempt to use fuse_notify_inval_entry()
triggers complains about scheduling while atomic:

  BUG: scheduling while atomic: fuse.hf/13976/0x10000001

This happens because fuse_notify_inval_entry() attempts to allocate memory
with GFP_KERNEL, holding "struct fuse_copy_state" mapped by kmap_atomic().

Introduced by commit 58bda1da4b3c "fuse/dev: use atomic maps"

Fix by moving the map/unmap to just cover the actual memcpy operation.

Original patch from Maxim Patlasov 

Reported-by: Richard Sharpe 
Signed-off-by: Miklos Szeredi 
Cc:  # v3.15+

mm: page_alloc: convert hot/cold parameter and immediate callers to bool

2014-06-04T23:54:09+00:00

cold is a bool, make it one.  Make the likely case the "if" part of the
block instead of the else as according to the optimisation manual this is
preferred.

Signed-off-by: Mel Gorman 
Acked-by: Rik van Riel 
Cc: Johannes Weiner 
Cc: Vlastimil Babka 
Cc: Jan Kara 
Cc: Michal Hocko 
Cc: Hugh Dickins 
Cc: Dave Hansen 
Cc: Theodore Ts'o 
Cc: "Paul E. McKenney" 
Cc: Oleg Nesterov 
Cc: Peter Zijlstra 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

pipe: kill ->map() and ->unmap()

2014-04-02T03:19:19+00:00

all pipe_buffer_operations have the same instances of those...

Signed-off-by: Al Viro

fuse/dev: use atomic maps

2014-04-02T03:19:18+00:00

Signed-off-by: Al Viro

fuse: fix SetPageUptodate() condition in STORE

2014-01-22T18:36:58+00:00

As noticed by Coverity the "num != 0" condition never triggers.  Instead it
should check for a complete page.

Signed-off-by: Miklos Szeredi

fuse: fix pipe_buf_operations

2014-01-22T18:36:57+00:00

Having this struct in module memory could Oops when if the module is
unloaded while the buffer still persists in a pipe.

Since sock_pipe_buf_ops is essentially the same as fuse_dev_pipe_buf_steal
merge them into nosteal_pipe_buf_ops (this is the same as
default_pipe_buf_ops except stealing the page from the buffer is not
allowed).

Reported-by: Al Viro 
Signed-off-by: Miklos Szeredi 
Cc: stable@vger.kernel.org

fuse: use list_for_each_entry() for list traversing

2013-09-04T15:42:42+00:00

Signed-off-by: Miklos Szeredi