linux-toradex.git/fs/fuse, branch v2.6.30.2

fuse: fix return value of fuse_dev_write()

2009-07-20T03:38:56+00:00

commit b4c458b3a23d76936e76678f2074b1528f129f7a upstream.

On 64 bit systems -- where sizeof(ssize_t) > sizeof(int) -- the following test
exposes a bug due to a non-careful return of an int or unsigned value:

implement a FUSE filesystem which sends an unsolicited notification to
the kernel with invalid opcode. The respective write to /dev/fuse
will return (1 << 32) - EINVAL with errno == 0 instead of -1 with
errno == EINVAL.

Signed-off-by: Miklos Szeredi 
Signed-off-by: Greg Kroah-Hartman

fuse: fix bad return value in fuse_file_poll()

2009-07-20T03:38:55+00:00

commit 201fa69a2849536ef2912e8e971ec0b01c04eff4 upstream.

Fix fuse_file_poll() which returned a -errno value instead of a poll
mask.

Signed-off-by: Miklos Szeredi 
Signed-off-by: Greg Kroah-Hartman

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

2009-05-13T23:32:57+00:00

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  fuse: destroy bdi on error

vfs: umount_begin BKL pushdown

2009-05-09T14:49:38+00:00

Push BKL down into ->umount_begin()

Signed-off-by: Alessio Igor Bogani 
Signed-off-by: Al Viro

fuse: destroy bdi on error

2009-04-28T14:56:35+00:00

Destroy bdi on error in fuse_fill_super().

This was an omission from commit 26c3679101dbccc054dcf370143941844ba70531
"fuse: destroy bdi on umount", which moved the bdi_destroy() call from
fuse_conn_put() to fuse_put_super().

Signed-off-by: Miklos Szeredi 
CC: stable@kernel.org

fuse: fix "direct_io" private mmap

2009-04-09T15:37:53+00:00

MAP_PRIVATE mmap could return stale data from the cache for
"direct_io" files.  Fix this by flushing the cache on mmap. 

Found with a slightly modified fsx-linux.

Signed-off-by: Miklos Szeredi

fuse: fix argument type in fuse_get_user_pages()

2009-04-09T15:37:52+00:00

Fix the following warning:

fs/fuse/file.c: In function 'fuse_direct_io':
fs/fuse/file.c:1002: warning: passing argument 3 of 'fuse_get_user_pages' from incompatible pointer type

This was introduced by commit f4975c67 "fuse: allow kernel to access
"direct_io" files".

Signed-off-by: Miklos Szeredi

fuse: allow private mappings of "direct_io" files

2009-04-02T12:25:35+00:00

Allow MAP_PRIVATE mmaps of "direct_io" files.  This is necessary for
execute support.

MAP_SHARED mappings require some sort of coherency between the
underlying file and the mapping.  With "direct_io" it is difficult to
provide this, so for the moment just disallow shared (read-write and
read-only) mappings altogether.

Signed-off-by: Miklos Szeredi

fuse: allow kernel to access "direct_io" files

2009-04-02T12:25:34+00:00

Allow the kernel read and write on "direct_io" files.  This is
necessary for nfs export and execute support.

The implementation is simple: if an access from the kernel is
detected, don't perform get_user_pages(), just use the kernel address
provided by the requester to copy from/to the userspace filesystem.

Signed-off-by: Miklos Szeredi

mm: page_mkwrite change prototype to match fault

2009-04-01T15:59:14+00:00

Change the page_mkwrite prototype to take a struct vm_fault, and return
VM_FAULT_xxx flags.  There should be no functional change.

This makes it possible to return much more detailed error information to
the VM (and also can provide more information eg.  virtual_address to the
driver, which might be important in some special cases).

This is required for a subsequent fix.  And will also make it easier to
merge page_mkwrite() with fault() in future.

Signed-off-by: Nick Piggin 
Cc: Chris Mason 
Cc: Trond Myklebust 
Cc: Miklos Szeredi 
Cc: Steven Whitehouse 
Cc: Mark Fasheh 
Cc: Joel Becker 
Cc: Artem Bityutskiy 
Cc: Felix Blyakher 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds