linux.git/fs/9p, branch v2.6.14

[PATCH] v9fs: remove additional buffer allocation from v9fs_file_read and v9fs_file_write

2005-10-11T16:46:54+00:00

v9fs_file_read and v9fs_file_write use kmalloc to allocate buffers as big
as the data buffer received as parameter.  kmalloc cannot be used to
allocate buffers bigger than 128K, so reading/writing data in chunks bigger
than 128k fails.

This patch reorganizes v9fs_file_read and v9fs_file_write to allocate only
buffers as big as the maximum data that can be sent in one 9P message.

Signed-off-by: Latchesar Ionkov 
Cc: Eric Van Hensbergen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] missing ERR_PTR in 9fs

2005-09-30T15:42:23+00:00

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

[PATCH] v9fs: fix races in fid allocation

2005-09-28T14:46:40+00:00

Fid management cleanup.  The patch attempts to fix the races in dentry's
fid management.

Dentries don't keep the opened fids anymore, they are moved to the file
structs.  Ideally there should be no more than one fid with fidcreate equal
to zero in the dentry's list of fids.

v9fs_fid_create initializes the important fields (fid, fidcreated) before
v9fs_fid is added to the list.  v9fs_fid_lookup returns only fids that are
not created by v9fs_create.  v9fs_fid_get_created returns the fid created
by the same process by v9fs_create (if any) and removes it from dentry's
list

Signed-off-by: Latchesar Ionkov 
Cc: Eric Van Hensbergen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] v9fs: don't free root dentry & inode if error occurs in v9fs_get_sb

2005-09-23T05:17:33+00:00

If error occurs while in v9fs_get_sb after it calles sget, the dentry object
of the root and its inode may be freed twice -- once while handling the error
in v9fs_get_sb, and second time when v9fs_get_sb calles deactivate_super
(which in turn calls v9fs_kill_super)

The patch removes the unnecessary code that frees the root dentry and its
inode.

Signed-off-by: Latchesar Ionkov 
Cc: Eric Van Hensbergen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] v9fs: replace strlen on newly allocated by __getname buffers to PATH_MAX

2005-09-23T05:17:33+00:00

v9fs_vfs_readlink allocates space for the link using __getname and
errorneously uses strlen on the newly allocated buffer to check if the buffer
passed by the user is bigger than the one returned by __getname.

The patch replaces the strlen usage to PATH_MAX, which is the actual size of
the buffers returned by __getname.

Signed-off-by: Latchesar Ionkov 
Cc: Eric Van Hensbergen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] v9fs: make copy of the transport prototype instead of using it directly

2005-09-23T05:17:33+00:00

When a new session is created it uses a template object of the specified
transport type to instantiate its own copy.  The code for the making a copy of
the template object was lost, and the object itself is attached to the v9fs
session.  This leads to many sessions using the same transport instead of
having their own copy.

The patch puts back the code that makes a copy of the template object.

Signed-off-by: Latchesar Ionkov 
Cc: Eric Van Hensbergen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] v9fs: allocate the Rwalk qid array from the right conv buffer

2005-09-23T05:17:33+00:00

When v9fs_deserealize_fcall deserializes a Rwalk message, it incorrectly
allocates space for the qid array in the source instead of the destination
buffer.

Signed-off-by: Latchesar Ionkov 
Cc: Eric Van Hensbergen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] v9fs: make conv functions to check for conv buffer overflow

2005-09-23T05:17:33+00:00

buf_check_size function checks if the conv buffer has enough space for the
performed operation, but it doesn't return the result back to the calling
function, only logs an error in the log.

The report-back-error functionality was lost when buf_check_size was
converted from macro to inline function. The return in the macro used to
exit from the functions that include it, after the conversion it just exits
from the inline function itself.

The patch makes buf_check_size to return flag and all functions that use
it check if they should perform the operation, or exit.

Signed-off-by: Latchesar Ionkov 
Cc: Eric Van Hensbergen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] v9fs: fix handling of malformed 9P messages

2005-09-09T20:57:58+00:00

This patch attempts to do a better job of cleaning up after detecting errors
on the transport.  This should also improve error reporting on broken
connections to servers.

Signed-off-by: Latchesar Ionkov 
Signed-off-by: Eric Van Hensbergen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] v9fs: readlink extended mode check

2005-09-09T20:57:58+00:00

LANL reported some issues with random crashes during mount of legacy protocol
servers (9P2000 versus 9P2000.u) -- crash was always happening in readlink
(which should never happen in legacy mode).  Added some sanity conditionals to
the get_inode code which should prevent the errors LANL was seeing.  Code
tested benign through regression.

Signed-off-by: Eric Van Hensbergen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds