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* net: Fix use after free by removing length arg from sk_data_ready callbacks.David S. Miller2014-04-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Several spots in the kernel perform a sequence like: skb_queue_tail(&sk->s_receive_queue, skb); sk->sk_data_ready(sk, skb->len); But at the moment we place the SKB onto the socket receive queue it can be consumed and freed up. So this skb->len access is potentially to freed up memory. Furthermore, the skb->len can be modified by the consumer so it is possible that the value isn't accurate. And finally, no actual implementation of this callback actually uses the length argument. And since nobody actually cared about it's value, lots of call sites pass arbitrary values in such as '0' and even '1'. So just remove the length argument from the callback, that way there is no confusion whatsoever and all of these use-after-free cases get fixed as a side effect. Based upon a patch by Eric Dumazet and his suggestion to audit this issue tree-wide. Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'for-linus' of ↵Linus Torvalds2014-04-075-316/+864
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client Pull Ceph updates from Sage Weil: "The biggest chunk is a series of patches from Ilya that add support for new Ceph osd and crush map features, including some new tunables, primary affinity, and the new encoding that is needed for erasure coding support. This brings things into parity with the server side and the looming firefly release. There is also support for allocation hints in RBD that help limit fragmentation on the server side. There is also a series of patches from Zheng fixing NFS reexport, directory fragmentation support, flock vs fnctl behavior, and some issues with clustered MDS. Finally, there are some miscellaneous fixes from Yunchuan Wen for fscache, Fabian Frederick for ACLs, and from me for fsync(dirfd) behavior" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (79 commits) ceph: skip invalid dentry during dcache readdir libceph: dump pool {read,write}_tier to debugfs libceph: output primary affinity values on osdmap updates ceph: flush cap release queue when trimming session caps ceph: don't grabs open file reference for aborted request ceph: drop extra open file reference in ceph_atomic_open() ceph: preallocate buffer for readdir reply libceph: enable PRIMARY_AFFINITY feature bit libceph: redo ceph_calc_pg_primary() in terms of ceph_calc_pg_acting() libceph: add support for osd primary affinity libceph: add support for primary_temp mappings libceph: return primary from ceph_calc_pg_acting() libceph: switch ceph_calc_pg_acting() to new helpers libceph: introduce apply_temps() helper libceph: introduce pg_to_raw_osds() and raw_to_up_osds() helpers libceph: ceph_can_shift_osds(pool) and pool type defines libceph: ceph_osd_{exists,is_up,is_down}(osd) definitions libceph: enable OSDMAP_ENC feature bit libceph: primary_affinity decode bits libceph: primary_affinity infrastructure ...
| * libceph: dump pool {read,write}_tier to debugfsIlya Dryomov2014-04-041-3/+3
| | | | | | | | | | | | | | Dump pool {read,write}_tier to debugfs. While at it, fixup printk type specifiers and remove the unnecessary cast to unsigned long long. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
| * libceph: output primary affinity values on osdmap updatesIlya Dryomov2014-04-041-0/+2
| | | | | | | | | | | | | | Similar to osd weights, output primary affinity values on incremental osdmap updates. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
| * libceph: redo ceph_calc_pg_primary() in terms of ceph_calc_pg_acting()Ilya Dryomov2014-04-041-75/+4
| | | | | | | | | | | | | | | | Reimplement ceph_calc_pg_primary() in terms of ceph_calc_pg_acting() and get rid of the now unused calc_pg_raw(). Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: add support for osd primary affinityIlya Dryomov2014-04-041-0/+68
| | | | | | | | | | | | | | | | | | | | | | Respond to non-default primary_affinity values accordingly. (Primary affinity allows the admin to shift 'primary responsibility' away from specific osds, effectively shifting around the read side of the workload and whatever overhead is incurred by peering and writes by virtue of being the primary). Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: add support for primary_temp mappingsIlya Dryomov2014-04-041-1/+6
| | | | | | | | | | | | | | | | Change apply_temp() to override primary in the same way pg_temp overrides osd set. primary_temp overrides pg_temp primary too. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: return primary from ceph_calc_pg_acting()Ilya Dryomov2014-04-042-14/+16
| | | | | | | | | | | | | | | | | | | | In preparation for adding support for primary_temp, stop assuming primaryness: add a primary out parameter to ceph_calc_pg_acting() and change call sites accordingly. Primary is now specified separately from the order of osds in the set. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: switch ceph_calc_pg_acting() to new helpersIlya Dryomov2014-04-041-13/+38
| | | | | | | | | | | | | | | | Switch ceph_calc_pg_acting() to new helpers: pg_to_raw_osds(), raw_to_up_osds() and apply_temps(). Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: introduce apply_temps() helperIlya Dryomov2014-04-041-0/+52
| | | | | | | | | | | | | | | | | | apply_temp() helper for applying various temporary mappings (at this point only pg_temp mappings) to the up set, therefore transforming it into an acting set. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: introduce pg_to_raw_osds() and raw_to_up_osds() helpersIlya Dryomov2014-04-041-0/+76
| | | | | | | | | | | | | | | | | | | | | | | | pg_to_raw_osds() helper for computing a raw (crush) set, which can contain non-existant and down osds. raw_to_up_osds() helper for pruning non-existant and down osds from the raw set, therefore transforming it into an up set, and determining up primary. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: primary_affinity decode bitsIlya Dryomov2014-04-041-0/+72
| | | | | | | | | | | | | | | | Add two helpers to decode primary_affinity (full map, vector<u32>) and new_primary_affinity (inc map, map<u32, u32>) and switch to them. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: primary_affinity infrastructureIlya Dryomov2014-04-042-2/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | Add primary_affinity infrastructure. primary_affinity values are stored in an max_osd-sized array, hanging off ceph_osdmap, similar to a osd_weight array. Introduce {get,set}_primary_affinity() helpers, primarily to return CEPH_OSD_DEFAULT_PRIMARY_AFFINITY when no affinity has been set and to abstract out osd_primary_affinity array allocation and initialization. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: primary_temp decode bitsIlya Dryomov2014-04-041-0/+69
| | | | | | | | | | | | | | | | Add a common helper to decode both primary_temp (full map, map<pg_t, u32>) and new_primary_temp (inc map, same) and switch to it. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: primary_temp infrastructureIlya Dryomov2014-04-042-1/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add primary_temp mappings infrastructure. struct ceph_pg_mapping is overloaded, primary_temp mappings are stored in an rb-tree, rooted at ceph_osdmap, in a manner similar to pg_temp mappings. Dump primary_temp mappings to /sys/kernel/debug/ceph/<client>/osdmap, one 'primary_temp <pgid> <osd>' per line, e.g: primary_temp 2.6 4 Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: generalize ceph_pg_mappingIlya Dryomov2014-04-042-6/+6
| | | | | | | | | | | | | | | | In preparation for adding support for primary_temp mappings, generalize struct ceph_pg_mapping so it can hold mappings other than pg_temp. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: introduce get_osdmap_client_data_v()Ilya Dryomov2014-04-041-16/+65
| | | | | | | | | | | | | | | | | | | | Full and incremental osdmaps are structured identically and have identical headers. Add a helper to decode both "old" (16-bit version, v6) and "new" (8-bit struct_v+struct_compat+struct_len, v7) osdmap enconding headers and switch to it. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: introduce decode{,_new}_pg_temp() and switch to themIlya Dryomov2014-04-041-72/+67
| | | | | | | | | | | | | | | | Consolidate pg_temp (full map, map<pg_t, vector<u32>>) and new_pg_temp (inc map, same) decoding logic into a common helper and switch to it. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: switch osdmap_set_max_osd() to krealloc()Ilya Dryomov2014-04-041-15/+17
| | | | | | | | | | | | | | | | | | Use krealloc() instead of rolling our own. (krealloc() with a NULL first argument acts as a kmalloc()). Properly initalize the new array elements. This is needed to make future additions to osdmap easier. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: introduce decode{,_new}_pools() and switch to themIlya Dryomov2014-04-041-37/+57
| | | | | | | | | | | | | | | | Consolidate pools (full map, map<u64, pg_pool_t>) and new_pools (inc map, same) decoding logic into a common helper and switch to it. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: rename __decode_pool{,_names}() to decode_pool{,_names}()Ilya Dryomov2014-04-041-6/+8
| | | | | | | | | | | | | | To be in line with all the other osdmap decode helpers. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: fix and clarify ceph_decode_need() sizesIlya Dryomov2014-04-041-6/+7
| | | | | | | | | | | | | | | | Sum up sizeof(...) results instead of (incorrectly) hard-coding the number of bytes, expressed in ints and longs. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: nuke bogus encoding version check in osdmap_apply_incremental()Ilya Dryomov2014-04-041-5/+4
| | | | | | | | | | | | | | | | | | Only version 6 of osdmap encoding is supported, anything other than version 6 results in an error and halts the decoding process. Checking if version is >= 5 is therefore bogus. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: fixup error handling in osdmap_apply_incremental()Ilya Dryomov2014-04-041-32/+34
| | | | | | | | | | | | | | | | | | | | | | The existing error handling scheme requires resetting err to -EINVAL prior to calling any ceph_decode_* macro. This is ugly and fragile, and there already are a few places where we would return 0 on error, due to a missing reset. Follow osdmap_decode() and fix this by adding a special e_inval label to be used by all ceph_decode_* macros. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: fix crush_decode() call site in osdmap_decode()Ilya Dryomov2014-04-041-5/+2
| | | | | | | | | | | | | | | | | | | | The size of the memory area feeded to crush_decode() should be limited not only by osdmap end, but also by the crush map length. Also, drop unnecessary dout() (dout() in crush_decode() conveys the same info) and step past crush map only if it is decoded successfully. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: check length of osdmap osd arraysIlya Dryomov2014-04-041-4/+10
| | | | | | | | | | | | | | | | | | Check length of osd_state, osd_weight and osd_addr arrays. They should all have exactly max_osd elements after the call to osdmap_set_max_osd(). Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: safely decode max_osd value in osdmap_decode()Ilya Dryomov2014-04-041-2/+4
| | | | | | | | | | | | | | | | max_osd value is not covered by any ceph_decode_need(). Use a safe version of ceph_decode_* macro to decode it. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: fixup error handling in osdmap_decode()Ilya Dryomov2014-04-041-26/+27
| | | | | | | | | | | | | | | | | | | | | | The existing error handling scheme requires resetting err to -EINVAL prior to calling any ceph_decode_* macro. This is ugly and fragile, and there already are a few places where we would return 0 on error, due to a missing reset. Fix this by adding a special e_inval label to be used by all ceph_decode_* macros. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: split osdmap allocation and decode stepsIlya Dryomov2014-04-042-16/+30
| | | | | | | | | | | | | | | | Split osdmap allocation and initialization into a separate function, ceph_osdmap_decode(). Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: dump osdmap and enhance output on decode errorsIlya Dryomov2014-04-041-6/+15
| | | | | | | | | | | | | | | | | | Dump osdmap in hex on both full and incremental decode errors, to make it easier to match the contents with error offset. dout() map epoch and max_osd value on success. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: dump pg_temp mappings to debugfsIlya Dryomov2014-04-041-0/+11
| | | | | | | | | | | | | | | | | | | | Dump pg_temp mappings to /sys/kernel/debug/ceph/<client>/osdmap, one 'pg_temp <pgid> [<osd>, ..., <osd>]' per line, e.g: pg_temp 2.6 [2,3,4] Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: do not prefix osd lines with \t in debugfs outputIlya Dryomov2014-04-041-1/+1
| | | | | | | | | | | | | | | | To save screen space in anticipation of more fields (e.g. primary affinity). Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: refer to osdmap directly in osdmap_show()Ilya Dryomov2014-04-041-12/+14
| | | | | | | | | | | | | | To make it more readable and save screen space. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * crush: add SET_CHOOSELEAF_VARY_R stepIlya Dryomov2014-04-041-0/+5
| | | | | | | | | | | | | | | | | | This lets you adjust the vary_r tunable on a per-rule basis. Reflects ceph.git commit f944ccc20aee60a7d8da7e405ec75ad1cd449fac. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
| * crush: add chooseleaf_vary_r tunableIlya Dryomov2014-04-041-6/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current crush_choose_firstn code will re-use the same 'r' value for the recursive call. That means that if we are hitting a collision or rejection for some reason (say, an OSD that is marked out) and need to retry, we will keep making the same (bad) choice in that recursive selection. Introduce a tunable that fixes that behavior by incorporating the parent 'r' value into the recursive starting point, so that a different path will be taken in subsequent placement attempts. Note that this was done from the get-go for the new crush_choose_indep algorithm. This was exposed by a user who was seeing PGs stuck in active+remapped after reweight-by-utilization because the up set mapped to a single OSD. Reflects ceph.git commit a8e6c9fbf88bad056dd05d3eb790e98a5e43451a. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
| * crush: allow crush rules to set (re)tries counts to 0Ilya Dryomov2014-04-041-2/+2
| | | | | | | | | | | | | | | | | | These two fields are misnomers; they are *retry* counts. Reflects ceph.git commit f17caba8ae0cad7b6f8f35e53e5f73b444696835. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
| * crush: fix off-by-one errors in total_tries refactorIlya Dryomov2014-04-041-19/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Back in 27f4d1f6bc32c2ed7b2c5080cbd58b14df622607 we refactored the CRUSH code to allow adjustment of the retry counts on a per-pool basis. That commit had an off-by-one bug: the previous "tries" counter was a *retry* count, not a *try* count, but the new code was passing in 1 meaning there should be no retries. Fix the ftotal vs tries comparison to use < instead of <= to fix the problem. Note that the original code used <= here, which means the global "choose_total_tries" tunable is actually counting retries. Compensate for that by adding 1 in crush_do_rule when we pull the tunable into the local variable. This was noticed looking at output from a user provided osdmap. Unfortunately the map doesn't illustrate the change in mapping behavior and I haven't managed to construct one yet that does. Inspection of the crush debug output now aligns with prior versions, though. Reflects ceph.git commit 795704fd615f0b008dcc81aa088a859b2d075138. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
| * libceph: fix oops in ceph_msg_data_{pages,pagelist}_advance()Yan, Zheng2014-04-041-0/+6
| | | | | | | | | | | | | | When there is no more data, ceph_msg_data_{pages,pagelist}_advance() should not move on to the next page. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
| * libceph: add support for CEPH_OSD_OP_SETALLOCHINT osd opIlya Dryomov2014-04-031-0/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is primarily for rbd's benefit and is supposed to combat fragmentation: "... knowing that rbd images have a 4m size, librbd can pass a hint that will let the osd do the xfs allocation size ioctl on new files so that they are allocated in 1m or 4m chunks. We've seen cases where users with rbd workloads have very high levels of fragmentation in xfs and this would mitigate that and probably have a pretty nice performance benefit." SETALLOCHINT is considered advisory, so our backwards compatibility mechanism here is to set FAILOK flag for all SETALLOCHINT ops. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: encode CEPH_OSD_OP_FLAG_* op flagsIlya Dryomov2014-04-031-0/+2
| | | | | | | | | | | | | | | | Encode ceph_osd_op::flags field so that it gets sent over the wire. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * libceph: a per-osdc crush scratch bufferIlya Dryomov2014-04-031-9/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | With the addition of erasure coding support in the future, scratch variable-length array in crush_do_rule_ary() is going to grow to at least 200 bytes on average, on top of another 128 bytes consumed by rawosd/osd arrays in the call chain. Replace it with a buffer inside struct osdmap and a mutex. This shouldn't result in any contention, because all osd requests were already serialized by request_mutex at that point; the only unlocked caller was ceph_ioctl_get_dataloc(). Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
* | net: remove unnecessary return'sstephen hemminger2014-02-131-2/+0
|/ | | | | | | | | | | One of my pet coding style peeves is the practice of adding extra return; at the end of function. Kill several instances of this in network code. I suppose some coccinelle wizardy could do this automatically. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* libceph: do not dereference a NULL bio pointerIlya Dryomov2014-02-071-2/+6
| | | | | | | | | Commit f38a5181d9f3 ("ceph: Convert to immutable biovecs") introduced a NULL pointer dereference, which broke rbd in -rc1. Fix it. Cc: Kent Overstreet <kmo@daterainc.com> Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
* libceph: take map_sem for read in handle_reply()Ilya Dryomov2014-02-071-6/+11
| | | | | | | | | | | Handling redirect replies requires both map_sem and request_mutex. Taking map_sem unconditionally near the top of handle_reply() avoids possible race conditions that arise from releasing request_mutex to be able to acquire map_sem in redirect reply case. (Lock ordering is: map_sem, request_mutex, crush_mutex.) Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
* libceph: factor out logic from ceph_osdc_start_request()Ilya Dryomov2014-02-071-23/+39
| | | | | | | | | Factor out logic from ceph_osdc_start_request() into a new helper, __ceph_osdc_start_request(). ceph_osdc_start_request() now amounts to taking locks and calling __ceph_osdc_start_request(). Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
* libceph: fix error handling in ceph_osdc_init()Ilya Dryomov2014-02-031-1/+4
| | | | | | | | msgpool_op_reply message pool isn't destroyed if workqueue construction fails. Fix it. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
* Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-blockLinus Torvalds2014-01-301-26/+17
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull core block IO changes from Jens Axboe: "The major piece in here is the immutable bio_ve series from Kent, the rest is fairly minor. It was supposed to go in last round, but various issues pushed it to this release instead. The pull request contains: - Various smaller blk-mq fixes from different folks. Nothing major here, just minor fixes and cleanups. - Fix for a memory leak in the error path in the block ioctl code from Christian Engelmayer. - Header export fix from CaiZhiyong. - Finally the immutable biovec changes from Kent Overstreet. This enables some nice future work on making arbitrarily sized bios possible, and splitting more efficient. Related fixes to immutable bio_vecs: - dm-cache immutable fixup from Mike Snitzer. - btrfs immutable fixup from Muthu Kumar. - bio-integrity fix from Nic Bellinger, which is also going to stable" * 'for-3.14/core' of git://git.kernel.dk/linux-block: (44 commits) xtensa: fixup simdisk driver to work with immutable bio_vecs block/blk-mq-cpu.c: use hotcpu_notifier() blk-mq: for_each_* macro correctness block: Fix memory leak in rw_copy_check_uvector() handling bio-integrity: Fix bio_integrity_verify segment start bug block: remove unrelated header files and export symbol blk-mq: uses page->list incorrectly blk-mq: use __smp_call_function_single directly btrfs: fix missing increment of bi_remaining Revert "block: Warn and free bio if bi_end_io is not set" block: Warn and free bio if bi_end_io is not set blk-mq: fix initializing request's start time block: blk-mq: don't export blk_mq_free_queue() block: blk-mq: make blk_sync_queue support mq block: blk-mq: support draining mq queue dm cache: increment bi_remaining when bi_end_io is restored block: fixup for generic bio chaining block: Really silence spurious compiler warnings block: Silence spurious compiler warnings block: Kill bio_pair_split() ...
| * ceph: Convert to immutable biovecsKent Overstreet2013-11-231-26/+17
| | | | | | | | | | | | | | | | | | | | | | Now that we've got a mechanism for immutable biovecs - bi_iter.bi_bvec_done - we need to convert drivers to use primitives that respect it instead of using the bvec array directly. Signed-off-by: Kent Overstreet <kmo@daterainc.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Sage Weil <sage@inktank.com> Cc: ceph-devel@vger.kernel.org
* | libceph: follow redirect replies from osdsIlya Dryomov2014-01-271-9/+158
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Follow redirect replies from osds, for details see ceph.git commit fbbe3ad1220799b7bb00ea30fce581c5eadaf034. v1 (current) version of redirect reply consists of oloc and oid, which expands to pool, key, nspace, hash and oid. However, server-side code that would populate anything other than pool doesn't exist yet, and hence this commit adds support for pool redirects only. To make sure that future server-side updates don't break us, we decode all fields and, if any of key, nspace, hash or oid have a non-default value, error out with "corrupt osd_op_reply ..." message. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
* | libceph: rename ceph_osd_request::r_{oloc,oid} to r_base_{oloc,oid}Ilya Dryomov2014-01-272-17/+17
| | | | | | | | | | | | | | | | Rename ceph_osd_request::r_{oloc,oid} to r_base_{oloc,oid} before introducing r_target_{oloc,oid} needed for redirects. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
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