lwn.git/fs/cifs, branch v3.5-rc1

Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6

2012-05-29T19:42:10+00:00

Pull CIFS updates from Steve French. * 'for-next' of git://git.samba.org/sfrench/cifs-2.6: (29 commits) cifs: fix oops while traversing open file list (try #4) cifs: Fix comment as d_alloc_root() is replaced by d_make_root() CIFS: Introduce SMB2 mounts as vers=2.1 CIFS: Introduce SMB2 Kconfig option CIFS: Move add/set_credits and get_credits_field to ops structure CIFS: Move protocol specific demultiplex thread calls to ops struct CIFS: Move protocol specific part from cifs_readv_receive to ops struct CIFS: Move header_size/max_header_size to ops structure CIFS: Move protocol specific part from SendReceive2 to ops struct cifs: Include backup intent search flags during searches {try #2) CIFS: Separate protocol specific part from setlk CIFS: Separate protocol specific part from getlk CIFS: Separate protocol specific lock type handling CIFS: Convert lock type to 32 bit variable CIFS: Move locks to cifsFileInfo structure cifs: convert send_nt_cancel into a version specific op cifs: add a smb_version_operations/values structures and a smb_version enum cifs: remove the vers= and version= synonyms for ver= cifs: add warning about change in default cache semantics in 3.7 cifs: display cache= option in /proc/mounts ...

Merge tag 'writeback' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux

2012-05-28T16:54:45+00:00

Pull writeback tree from Wu Fengguang: "Mainly from Jan Kara to avoid iput() in the flusher threads." * tag 'writeback' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux: writeback: Avoid iput() from flusher thread vfs: Rename end_writeback() to clear_inode() vfs: Move waiting for inode writeback from end_writeback() to evict_inode() writeback: Refactor writeback_single_inode() writeback: Remove wb->list_lock from writeback_single_inode() writeback: Separate inode requeueing after writeback writeback: Move I_DIRTY_PAGES handling writeback: Move requeueing when I_SYNC set to writeback_sb_inodes() writeback: Move clearing of I_SYNC into inode_sync_complete() writeback: initialize global_dirty_limit fs: remove 8 bytes of padding from struct writeback_control on 64 bit builds mm: page-writeback.c: local functions should not be exposed globally

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

2012-05-23T08:33:18+00:00

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: Fix comment as d_alloc_root() is replaced by d_make_root()

2012-05-23T08:33:16+00:00

For more details see . Signed-off-by: Sedat Dilek Signed-off-by: Steve French

CIFS: Introduce SMB2 mounts as vers=2.1

2012-05-23T08:33:15+00:00

As with Linux nfs client, which uses "nfsvers=" or "vers=" to indicate which protocol to use for mount, specifying "vers=2.1" will force an SMB2 mount. When vers is not specified CIFS is used "vers=1" We can eventually autonegotiate down from SMB2 to CIFS when SMB2 is stable enough to make it the default, but this is for the future. At that time we could also implement a "maxprotocol" mount option as smbclient and Samba have today, but that would be premature until SMB2 is stable. Intially the SMB2 Kconfig option will depend on "BROKEN" until the merge is complete, and then be "EXPERIMENTAL" When it is no longer experimental we can consider changing the default protocol to attempt first. Signed-off-by: Pavel Shilovsky Signed-off-by: Jeff Layton Acked-by: Shirish Pargaonkar Signed-off-by: Steve French

CIFS: Introduce SMB2 Kconfig option

2012-05-23T08:33:14+00:00

SMB2 is the followon to the CIFS (and SMB) protocols and the default for Windows since Windows Vista, and also now implemented by various non-Windows servers. SMB2 is more secure, has various performance advantages, including larger i/o sizes, flow control, better caching model and more. SMB2 also resolves some scalability limits in the CIFS protocol and adds many new features while being much simpler (only a few dozen commands instead of hundreds) and since the protocol is clearer it is also more consistently implemented across servers and thus easier to optimize. After much discussion with Jeff Layton, Jeremy Allison and others at Connectathon, we decided to move the SMB2 code from a distinct .ko and fstype into distinct C files that optionally build in cifs.ko. As a result the Kconfig gets simpler. To avoid destabilizing CIFS, the SMB2 code is going to be moved into its own experimental CONFIG_CIFS_SMB2 ifdef as it is merged and rereviewed. The changes to stable CIFS (builds with the SMB2 ifdef off) are expected to be fairly small. Reviewed-by: Jeff Layton Signed-off-by: Steve French Signed-off-by: Pavel Shilovsky Signed-off-by: Steve French

CIFS: Move add/set_credits and get_credits_field to ops structure

2012-05-23T08:33:12+00:00

Acked-by: Shirish Pargaonkar Reviewed-by: Jeff Layton Signed-off-by: Pavel Shilovsky Signed-off-by: Steve French

CIFS: Move protocol specific demultiplex thread calls to ops struct

2012-05-23T08:33:11+00:00

Acked-by: Shirish Pargaonkar Signed-off-by: Pavel Shilovsky Signed-off-by: Steve French

CIFS: Move protocol specific part from cifs_readv_receive to ops struct

2012-05-23T08:33:09+00:00

Acked-by: Shirish Pargaonkar Reviewed-by: Jeff Layton Signed-off-by: Pavel Shilovsky Signed-off-by: Steve French

CIFS: Move header_size/max_header_size to ops structure

2012-05-23T08:33:08+00:00

Acked-by: Shirish Pargaonkar Reviewed-by: Jeff Layton Signed-off-by: Pavel Shilovsky Signed-off-by: Steve French