user/sven/linux.git/include/linux/ceph, branch v3.12.41

remove extra definitions of U32_MAX

2015-04-22T06:58:25Z

commit 04f9b74e4d96d349de12fdd4e6626af4a9f75e09 upstream. Now that the definition is centralized in , the definitions of U32_MAX (and related) elsewhere in the kernel can be removed. Signed-off-by: Alex Elder Acked-by: Sage Weil Acked-by: David S. Miller Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Jiri Slaby

conditionally define U32_MAX

2015-04-22T06:58:14Z

commit 77719536dc00f8fd8f5abe6dadbde5331c37f996 upstream. The symbol U32_MAX is defined in several spots. Change these definitions to be conditional. This is in preparation for the next patch, which centralizes the definition in . Signed-off-by: Alex Elder Cc: Sage Weil Cc: David Miller Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Jiri Slaby

libceph: rename ceph_msg::front_max to front_alloc_len

2014-03-31T12:22:35Z

commit 3cea4c3071d4e55e9d7356efe9d0ebf92f0c2204 upstream. Rename front_max field of struct ceph_msg to front_alloc_len to make its purpose more clear. Signed-off-by: Ilya Dryomov Reviewed-by: Sage Weil Signed-off-by: Jiri Slaby

libceph: block I/O when PAUSE or FULL osd map flags are set

2014-03-31T12:22:27Z

commit d29adb34a94715174c88ca93e8aba955850c9bde upstream. The PAUSEWR and PAUSERD flags are meant to stop the cluster from processing writes and reads, respectively. The FULL flag is set when the cluster determines that it is out of space, and will no longer process writes. PAUSEWR and PAUSERD are purely client-side settings already implemented in userspace clients. The osd does nothing special with these flags. When the FULL flag is set, however, the osd responds to all writes with -ENOSPC. For cephfs, this makes sense, but for rbd the block layer translates this into EIO. If a cluster goes from full to non-full quickly, a filesystem on top of rbd will not behave well, since some writes succeed while others get EIO. Fix this by blocking any writes when the FULL flag is set in the osd client. This is the same strategy used by userspace, so apply it by default. A follow-on patch makes this configurable. __map_request() is called to re-target osd requests in case the available osds changed. Add a paused field to a ceph_osd_request, and set it whenever an appropriate osd map flag is set. Avoid queueing paused requests in __map_request(), but force them to be resent if they become unpaused. Also subscribe to the next osd map from the monitor if any of these flags are set, so paused requests can be unblocked as soon as possible. Fixes: http://tracker.ceph.com/issues/6079 Reviewed-by: Sage Weil Signed-off-by: Josh Durgin Signed-off-by: Jiri Slaby

libceph: add function to ensure notifies are complete

2013-09-09T18:15:49Z

Without a way to flush the osd client's notify workqueue, a watch event that is unregistered could continue receiving callbacks indefinitely. Unregistering the event simply means no new notifies are added to the queue, but there may still be events in the queue that will call the watch callback for the event. If the queue is flushed after the event is unregistered, the caller can be sure no more watch callbacks will occur for the canceled watch. Signed-off-by: Josh Durgin Reviewed-by: Sage Weil Reviewed-by: Alex Elder

libceph: fix invalid unsigned->signed conversion for timespec encoding

2013-07-09T19:18:06Z

__kernel_time_t is a long, which cannot hold a U32_MAX on 32-bit architectures. Just drop this check as it has limited value. This fixes a crash like: [ 957.905812] kernel BUG at /srv/autobuild-ceph/gitbuilder.git/build/include/linux/ceph/decode.h:164! [ 957.914849] Internal error: Oops - BUG: 0 [#1] SMP ARM [ 957.919978] Modules linked in: rbd libceph libcrc32c ipmi_devintf ipmi_si ipmi_msghandler nfsd nfs_acl auth_rpcgss nfs fscache lockd sunrpc [ 957.932547] CPU: 1 Tainted: G W (3.9.0-ceph-19bb6a83-highbank #1) [ 957.939881] PC is at ceph_osdc_build_request+0x8c/0x4f8 [libceph] [ 957.945967] LR is at 0xec520904 [ 957.949103] pc : [] lr : [] psr: 20000153 [ 957.949103] sp : ec753df8 ip : 00000001 fp : ec53e100 [ 957.960571] r10: ebef25c0 r9 : ec5fa400 r8 : ecbcc000 [ 957.965788] r7 : 00000000 r6 : 00000000 r5 : ffffffff r4 : 00000020 [ 957.972307] r3 : 51cc8143 r2 : ec520900 r1 : ec753e58 r0 : ec520908 [ 957.978827] Flags: nzCv IRQs on FIQs off Mode SVC_32 ISA ARM Segment user [ 957.986039] Control: 10c5387d Table: 2c59c04a DAC: 00000015 [ 957.991777] Process rbd (pid: 2138, stack limit = 0xec752238) [ 957.997514] Stack: (0xec753df8 to 0xec754000) [ 958.001864] 3de0: 00000001 00000001 [ 958.010032] 3e00: 00000001 bf139744 ecbcc000 ec55a0a0 00000024 00000000 ebef25c0 fffffffe [ 958.018204] 3e20: ffffffff 00000000 00000000 00000001 ec5fa400 ebef25c0 ec53e100 bf166b68 [ 958.026377] 3e40: 00000000 0000220f fffffffe ffffffff ec753e58 bf13ff24 51cc8143 05b25ed2 [ 958.034548] 3e60: 00000001 00000000 00000000 bf1688d4 00000001 00000000 00000000 00000000 [ 958.042720] 3e80: 00000001 00000060 ec5fa400 ed53d200 ed439600 ed439300 00000001 00000060 [ 958.050888] 3ea0: ec5fa400 ed53d200 00000000 bf16a320 00000000 ec53e100 00000040 ec753eb8 [ 958.059059] 3ec0: ec51df00 ed53d7c0 ed53d200 ed53d7c0 00000000 ed53d7c0 ec5fa400 bf16ed70 [ 958.067230] 3ee0: 00000000 00000060 00000002 ed53d200 00000000 bf16acf4 ed53d7c0 ec752000 [ 958.075402] 3f00: ed980e50 e954f5d8 00000000 00000060 ed53d240 ed53d258 ec753f80 c04f44a8 [ 958.083574] 3f20: edb7910c ec664700 01ade920 c02e4c44 00000060 c016b3dc ec51de40 01adfb84 [ 958.091745] 3f40: 00000060 ec752000 ec753f80 ec752000 00000060 c0108444 00000007 ec51de48 [ 958.099914] 3f60: ed0eb8c0 00000000 00000000 ec51de40 01adfb84 00000001 00000060 c0108858 [ 958.108085] 3f80: 00000000 00000000 51cc8143 00000060 01adfb84 00000007 00000004 c000dd68 [ 958.116257] 3fa0: 00000000 c000dbc0 00000060 01adfb84 00000007 01adfb84 00000060 01adfb80 [ 958.124429] 3fc0: 00000060 01adfb84 00000007 00000004 beded1a8 00000000 01adf2f0 01ade920 [ 958.132599] 3fe0: 00000000 beded180 b6811324 b6811334 800f0010 00000007 2e7f5821 2e7f5c21 [ 958.140815] [] (ceph_osdc_build_request+0x8c/0x4f8 [libceph]) from [] (rbd_osd_req_format_write+0x50/0x7c [rbd]) [ 958.152739] [] (rbd_osd_req_format_write+0x50/0x7c [rbd]) from [] (rbd_dev_header_watch_sync+0xe0/0x204 [rbd]) [ 958.164486] [] (rbd_dev_header_watch_sync+0xe0/0x204 [rbd]) from [] (rbd_dev_image_probe+0x23c/0x850 [rbd]) [ 958.175967] [] (rbd_dev_image_probe+0x23c/0x850 [rbd]) from [] (rbd_add+0x3c0/0x918 [rbd]) [ 958.185975] [] (rbd_add+0x3c0/0x918 [rbd]) from [] (bus_attr_store+0x20/0x2c) [ 958.194850] [] (bus_attr_store+0x20/0x2c) from [] (sysfs_write_file+0x168/0x198) [ 958.203984] [] (sysfs_write_file+0x168/0x198) from [] (vfs_write+0x9c/0x170) [ 958.212768] [] (vfs_write+0x9c/0x170) from [] (sys_write+0x3c/0x70) [ 958.220768] [] (sys_write+0x3c/0x70) from [] (ret_fast_syscall+0x0/0x30) [ 958.229199] Code: e59d1058 e5913000 e3530000 ba000114 (e7f001f2) CC: stable@vger.kernel.org # 3.4+ Signed-off-by: Josh Durgin Reviewed-by: Sage Weil

libceph: fix safe completion

2013-07-03T22:32:44Z

handle_reply() calls complete_request() only if the first OSD reply has ONDISK flag. Signed-off-by: Yan, Zheng Reviewed-by: Sage Weil

libceph: use slab cache for osd client requests

2013-05-02T16:58:41Z

Create a slab cache to manage allocation of ceph_osdc_request structures. This resolves: http://tracker.ceph.com/issues/3926 Signed-off-by: Alex Elder Reviewed-by: Josh Durgin

libceph: create source file "net/ceph/snapshot.c"

2013-05-02T04:20:08Z

This creates a new source file "net/ceph/snapshot.c" to contain utility routines related to ceph snapshot contexts. The main motivation was to define ceph_create_snap_context() as a common way to create these structures, but I've moved the definitions of ceph_get_snap_context() and ceph_put_snap_context() there too. (The benefit of inlining those is very small, and I'd rather keep this collection of functions together.) Signed-off-by: Alex Elder Reviewed-by: Josh Durgin

libceph: validate timespec conversions

2013-05-02T04:19:17Z

A ceph timespec contains 32-bit unsigned values for its seconds and nanoseconds components. For a standard timespec, both fields are signed, and the seconds field is almost surely 64 bits. Add some explicit casts so the fact that this conversion is taking place is obvious. Also trip a bug if we ever try to put out of range (negative or too big) values into a ceph timespec. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin