kernel.git/fs/cifs/file.c, branch linux-3.5.y

cifs: ensure that we always do cifsFileInfo_get under the spinlock

2012-08-09T15:22:54Z

commit 764a1b1acecedfe204cb2e80d8e2cc7c6df1b0b8 upstream. The readpages bug is a regression that was introduced in 6993f74a5. This also fixes a couple of similar bugs in the uncached read and write codepaths. Also, prevent this sort of thing in the future by having cifsFileInfo_get take the spinlock itself, and adding a _locked variant for use in places that are already holding the lock. The _put code has always done that so this makes for a less confusing interface. Reviewed-by: Pavel Shilovsky Signed-off-by: Jeff Layton Signed-off-by: Steve French Signed-off-by: Greg Kroah-Hartman

CIFS: Improve identation in cifs_unlock_range

2012-06-01T17:35:12Z

Signed-off-by: Pavel Shilovsky Signed-off-by: Steve French

CIFS: Fix possible wrong memory allocation

2012-06-01T17:35:08Z

when cifs_reconnect sets maxBuf to 0 and we try to calculate a size of memory we need to store locks. Signed-off-by: Pavel Shilovsky Signed-off-by: Steve French

cifs: fix oops while traversing open file list (try #4)

2012-05-23T08:33:18Z

While traversing the linked list of open file handles, if the identfied file handle is invalid, a reopen is attempted and if it fails, we resume traversing where we stopped and cifs can oops while accessing invalid next element, for list might have changed. So mark the invalid file handle and attempt reopen if no valid file handle is found in rest of the list. If reopen fails, move the invalid file handle to the end of the list and start traversing the list again from the begining. Repeat this four times before giving up and returning an error if file reopen keeps failing. Cc: Signed-off-by: Shirish Pargaonkar Reviewed-by: Jeff Layton Signed-off-by: Steve French

CIFS: Separate protocol specific part from setlk

2012-05-17T09:07:48Z

Signed-off-by: Pavel Shilovsky

CIFS: Separate protocol specific part from getlk

2012-05-17T09:07:41Z

Signed-off-by: Pavel Shilovsky

CIFS: Separate protocol specific lock type handling

2012-05-17T01:13:36Z

Signed-off-by: Pavel Shilovsky

CIFS: Convert lock type to 32 bit variable

2012-05-17T01:13:35Z

to handle SMB2 lock type field further. Acked-by: Jeff Layton Signed-off-by: Pavel Shilovsky

CIFS: Move locks to cifsFileInfo structure

2012-05-17T01:13:35Z

CIFS brlock cache can be used by several file handles if we have a write-caching lease on the file that is supported by SMB2 protocol. Prepate the code to handle this situation correctly by sorting brlocks by a fid to easily push them in portions when lease break comes. Signed-off-by: Pavel Shilovsky

cifs: convert cifs_iovec_read to use async reads

2012-05-17T01:13:31Z

Convert cifs_iovec_read to use async I/O. This also raises the limit on the rsize for uncached reads. We first allocate a set of pages to hold the replies, then issue the reads in parallel and then collect the replies and copy the results into the iovec. A possible future optimization would be to kmap and inline the iovec buffers and read the data directly from the socket into that. That would require some rather complex conversion of the iovec into a kvec however. Signed-off-by: Jeff Layton