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2014-01-09ceph: fix null pointer dereferenceNathaniel Yazdani1-0/+3
commit c338c07c51e3106711fad5eb599e375eadb6855d upstream. When register_session() is given an out-of-range argument for mds, ceph_mdsmap_get_addr() will return a null pointer, which would be given to ceph_con_open() & be dereferenced, causing a kernel oops. This fixes bug #4685 in the Ceph bug tracker <http://tracker.ceph.com/issues/4685>. Signed-off-by: Nathaniel Yazdani <n1ght.4nd.d4y@gmail.com> Reviewed-by: Sage Weil <sage@inktank.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-09ceph: Free mdsc if alloc mdsc->mdsmap failed.majianpeng1-1/+3
commit fb3101b6f0db9ae3f35dc8e6ec908d0af8cdf12e upstream. Signed-off-by: Jianpeng Ma <majianpeng@gmail.com> Reviewed-by: Sage Weil <sage@inktank.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-09ceph: wake up 'safe' waiters when unregistering requestYan, Zheng1-1/+2
commit fc55d2c9448b34218ca58733a6f51fbede09575b upstream. We also need to wake up 'safe' waiters if error occurs or request aborted. Otherwise sync(2)/fsync(2) may hang forever. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by: Sage Weil <sage@inktank.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-09ceph: cleanup aborted requests when re-sending requests.Yan, Zheng1-1/+4
commit eb1b8af33c2e42a9a57fc0a7588f4a7b255d2e79 upstream. Aborted requests usually get cleared when the reply is received. If MDS crashes, no reply will be received. So we need to cleanup aborted requests when re-sending requests. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Reviewed-by: Greg Farnum <greg@inktank.com> Signed-off-by: Sage Weil <sage@inktank.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-17ceph: ceph_pagelist_append might sleep while atomicJim Schutt1-30/+35
Ceph's encode_caps_cb() worked hard to not call __page_cache_alloc() while holding a lock, but it's spoiled because ceph_pagelist_addpage() always calls kmap(), which might sleep. Here's the result: [13439.295457] ceph: mds0 reconnect start [13439.300572] BUG: sleeping function called from invalid context at include/linux/highmem.h:58 [13439.309243] in_atomic(): 1, irqs_disabled(): 0, pid: 12059, name: kworker/1:1 . . . [13439.376225] Call Trace: [13439.378757] [<ffffffff81076f4c>] __might_sleep+0xfc/0x110 [13439.384353] [<ffffffffa03f4ce0>] ceph_pagelist_append+0x120/0x1b0 [libceph] [13439.391491] [<ffffffffa0448fe9>] ceph_encode_locks+0x89/0x190 [ceph] [13439.398035] [<ffffffff814ee849>] ? _raw_spin_lock+0x49/0x50 [13439.403775] [<ffffffff811cadf5>] ? lock_flocks+0x15/0x20 [13439.409277] [<ffffffffa045e2af>] encode_caps_cb+0x41f/0x4a0 [ceph] [13439.415622] [<ffffffff81196748>] ? igrab+0x28/0x70 [13439.420610] [<ffffffffa045e9f8>] ? iterate_session_caps+0xe8/0x250 [ceph] [13439.427584] [<ffffffffa045ea25>] iterate_session_caps+0x115/0x250 [ceph] [13439.434499] [<ffffffffa045de90>] ? set_request_path_attr+0x2d0/0x2d0 [ceph] [13439.441646] [<ffffffffa0462888>] send_mds_reconnect+0x238/0x450 [ceph] [13439.448363] [<ffffffffa0464542>] ? ceph_mdsmap_decode+0x5e2/0x770 [ceph] [13439.455250] [<ffffffffa0462e42>] check_new_map+0x352/0x500 [ceph] [13439.461534] [<ffffffffa04631ad>] ceph_mdsc_handle_map+0x1bd/0x260 [ceph] [13439.468432] [<ffffffff814ebc7e>] ? mutex_unlock+0xe/0x10 [13439.473934] [<ffffffffa043c612>] extra_mon_dispatch+0x22/0x30 [ceph] [13439.480464] [<ffffffffa03f6c2c>] dispatch+0xbc/0x110 [libceph] [13439.486492] [<ffffffffa03eec3d>] process_message+0x1ad/0x1d0 [libceph] [13439.493190] [<ffffffffa03f1498>] ? read_partial_message+0x3e8/0x520 [libceph] . . . [13439.587132] ceph: mds0 reconnect success [13490.720032] ceph: mds0 caps stale [13501.235257] ceph: mds0 recovery completed [13501.300419] ceph: mds0 caps renewed Fix it up by encoding locks into a buffer first, and when the number of encoded locks is stable, copy that into a ceph_pagelist. [elder@inktank.com: abbreviated the stack info a bit.] Cc: stable@vger.kernel.org # 3.4+ Signed-off-by: Jim Schutt <jaschut@sandia.gov> Reviewed-by: Alex Elder <elder@inktank.com>
2013-05-17ceph: add cpu_to_le32() calls when encoding a reconnect capabilityJim Schutt1-1/+1
In his review, Alex Elder mentioned that he hadn't checked that num_fcntl_locks and num_flock_locks were properly decoded on the server side, from a le32 over-the-wire type to a cpu type. I checked, and AFAICS it is done; those interested can consult Locker::_do_cap_update() in src/mds/Locker.cc and src/include/encoding.h in the Ceph server code (git://github.com/ceph/ceph). I also checked the server side for flock_len decoding, and I believe that also happens correctly, by virtue of having been declared __le32 in struct ceph_mds_cap_reconnect, in src/include/ceph_fs.h. Cc: stable@vger.kernel.org # 3.4+ Signed-off-by: Jim Schutt <jaschut@sandia.gov> Reviewed-by: Alex Elder <elder@inktank.com>
2013-05-01libceph: add, don't set data for a messageAlex Elder1-2/+2
Change the names of the functions that put data on a pagelist to reflect that we're adding to whatever's already there rather than just setting it to the one thing. Currently only one data item is ever added to a message, but that's about to change. This resolves: http://tracker.ceph.com/issues/2770 Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
2013-05-01libceph: wrap auth ops in wrapper functionsSage Weil1-14/+12
Use wrapper functions that check whether the auth op exists so that callers do not need a bunch of conditional checks. Simplifies the external interface. Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com>
2013-05-01libceph: add update_authorizer auth methodSage Weil1-1/+6
Currently the messenger calls out to a get_authorizer con op, which will create a new authorizer if it doesn't yet have one. In the meantime, when we rotate our service keys, the authorizer doesn't get updated. Eventually it will be rejected by the server on a new connection attempt and get invalidated, and we will then rebuild a new authorizer, but this is not ideal. Instead, if we do have an authorizer, call a new update_authorizer op that will verify that the current authorizer is using the latest secret. If it is not, we will build a new one that does. This avoids the transient failure. This fixes one of the sorry sequence of events for bug http://tracker.ceph.com/issues/4282 Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com>
2013-05-01ceph: use i_release_count to indicate dir's completenessYan, Zheng1-7/+3
Current ceph code tracks directory's completeness in two places. ceph_readdir() checks i_release_count to decide if it can set the I_COMPLETE flag in i_ceph_flags. All other places check the I_COMPLETE flag. This indirection introduces locking complexity. This patch adds a new variable i_complete_count to ceph_inode_info. Set i_release_count's value to it when marking a directory complete. By comparing the two variables, we know if a directory is complete Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
2013-05-01ceph: only set message data pointers if non-emptyAlex Elder1-3/+10
Change it so we only assign outgoing data information for messages if there is outgoing data to send. This then allows us to add a few more (currently commented-out) assertions. This is related to: http://tracker.ceph.com/issues/4284 Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Greg Farnum <greg@inktank.com>
2013-05-01libceph: isolate other message data fieldsAlex Elder1-1/+1
Define ceph_msg_data_set_pagelist(), ceph_msg_data_set_bio(), and ceph_msg_data_set_trail() to clearly abstract the assignment of the remaining data-related fields in a ceph message structure. Use the new functions in the osd client and mds client. This partially resolves: http://tracker.ceph.com/issues/4263 Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
2013-05-01libceph: set page info with byte lengthAlex Elder1-1/+1
When setting page array information for message data, provide the byte length rather than the page count ceph_msg_data_set_pages(). Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
2013-05-01libceph: isolate message page field manipulationAlex Elder1-2/+2
Define a function ceph_msg_data_set_pages(), which more clearly abstracts the assignment page-related fields for data in a ceph message structure. Use this new function in the osd client and mds client. Ideally, these fields would never be set more than once (with BUG_ON() calls to guarantee that). At the moment though the osd client sets these every time it receives a message, and in the event of a communication problem this can happen more than once. (This will be resolved shortly, but setting up these helpers first makes it all a bit easier to work with.) Rearrange the field order in a ceph_msg structure to group those that are used to define the possible data payloads. This partially resolves: http://tracker.ceph.com/issues/4263 Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
2013-05-01libceph: no need for alignment for mds messageAlex Elder1-1/+0
Currently, incoming mds messages never use page data, which means there is no need to set the page_alignment field in the message. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Greg Farnum <greg@inktank.com>
2013-05-01libceph: define mds_alloc_msg() methodAlex Elder1-0/+23
The only user of the ceph messenger that doesn't define an alloc_msg method is the mds client. Define one, such that it works just like it did before, and simplify ceph_con_in_msg_alloc() by assuming the alloc_msg method is always present. This and the next patch resolve: http://tracker.ceph.com/issues/4322 Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Greg Farnum <greg@inktank.com>
2013-05-01libceph: kill ceph_msg->pagelist_countAlex Elder1-1/+0
The pagelist_count field is never actually used, so get rid of it. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
2013-05-01ceph: revert commit 22cddde104Sage Weil1-0/+1
commit 22cddde104 breaks the atomicity of write operation, it also introduces a deadlock between write and truncate. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Reviewed-by: Greg Farnum <greg@inktank.com> Conflicts: fs/ceph/addr.c
2013-05-01ceph: use I_COMPLETE inode flag instead of D_COMPLETE flagYan, Zheng1-3/+3
commit c6ffe10015 moved the flag that tracks if the dcache contents for a directory are complete to dentry. The problem is there are lots of places that use ceph_dir_{set,clear,test}_complete() while holding i_ceph_lock. but ceph_dir_{set,clear,test}_complete() may sleep because they call dput(). This patch basically reverts that commit. For ceph_d_prune(), it's called with both the dentry to prune and the parent dentry are locked. So it's safe to access the parent dentry's d_inode and clear I_COMPLETE flag. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Reviewed-by: Greg Farnum <greg@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
2013-05-01ceph: queue cap release when trimming capYan, Zheng1-0/+2
So the client will later send cap release message to MDS Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Reviewed-by: Greg Farnum <greg@inktank.com>
2013-05-01ceph: fix LSSNAP regressionYan, Zheng1-1/+2
commit 6e8575faa8 makes parse_reply_info_extra() return -EIO for LSSNAP Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Reviewed-by: Greg Farnum <greg@inktank.com>
2013-05-01libceph: distinguish page array and pagelist countAlex Elder1-2/+2
Use distinct fields for tracking the number of pages in a message's page array and in a message's page list. Currently only one or the other is used at a time, but that will be changing soon. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
2013-02-28Merge branch 'for-linus' of ↵Linus Torvalds1-2/+31
git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client Pull Ceph updates from Sage Weil: "A few groups of patches here. Alex has been hard at work improving the RBD code, layout groundwork for understanding the new formats and doing layering. Most of the infrastructure is now in place for the final bits that will come with the next window. There are a few changes to the data layout. Jim Schutt's patch fixes some non-ideal CRUSH behavior, and a set of patches from me updates the client to speak a newer version of the protocol and implement an improved hashing strategy across storage nodes (when the server side supports it too). A pair of patches from Sam Lang fix the atomicity of open+create operations. Several patches from Yan, Zheng fix various mds/client issues that turned up during multi-mds torture tests. A final set of patches expose file layouts via virtual xattrs, and allow the policies to be set on directories via xattrs as well (avoiding the awkward ioctl interface and providing a consistent interface for both kernel mount and ceph-fuse users)." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (143 commits) libceph: add support for HASHPSPOOL pool flag libceph: update osd request/reply encoding libceph: calculate placement based on the internal data types ceph: update support for PGID64, PGPOOL3, OSDENC protocol features ceph: update "ceph_features.h" libceph: decode into cpu-native ceph_pg type libceph: rename ceph_pg -> ceph_pg_v1 rbd: pass length, not op for osd completions rbd: move rbd_osd_trivial_callback() libceph: use a do..while loop in con_work() libceph: use a flag to indicate a fault has occurred libceph: separate non-locked fault handling libceph: encapsulate connection backoff libceph: eliminate sparse warnings ceph: eliminate sparse warnings in fs code rbd: eliminate sparse warnings libceph: define connection flag helpers rbd: normalize dout() calls rbd: barriers are hard rbd: ignore zero-length requests ...
2013-02-12ceph: Convert struct ceph_mds_request to use kuid_t and kgid_tEric W. Biederman1-2/+2
Hold the uid and gid for a pending ceph mds request using the types kuid_t and kgid_t. When a request message is finally created convert the kuid_t and kgid_t values into uids and gids in the initial user namespace. Cc: Sage Weil <sage@inktank.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2013-01-17ceph: Check for created flag in response from mdsSam Lang1-2/+31
The mds now sends back a created inode if the create request performed the create. If the file already existed, no inode is returned in the reply. This allows ceph to set the created flag in atomic_open so that permissions are properly checked in the case that the file wasn't created by the create call to the mds. To ensure compability with previous kernels, a feature for sending back the inode in the create reply was added, so that the mds will only send back the inode if the client indicates it supports the feature. Signed-off-by: Sam Lang <sam.lang@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
2012-12-13ceph: Fix infinite loop in __wake_requestsYan, Zheng1-2/+7
__wake_requests() will enter infinite loop if we use it to wake requests in the session->s_waiting list. __wake_requests() deletes requests from the list and __do_request() adds requests back to the list. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by: Sage Weil <sage@inktank.com>
2012-10-26ceph: Fix NULL ptr crash in strlen()David Zafman1-1/+1
set_request_path_attr() checks for NULL ptr before calling strlen() This fixes http://tracker.newdream.net/issues/3404 Signed-off-by: David Zafman <david.zafman@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
2012-10-01ceph: Fix oops when handling mdsmap that decreases max_mdsYan, Zheng1-1/+2
When i >= newmap->m_max_mds, ceph_mdsmap_get_addr(newmap, i) return NULL. Passing NULL to memcmp() triggers oops. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by: Sage Weil <sage@inktank.com>
2012-07-30ceph: close old con before reopening on mds reconnectSage Weil1-0/+1
When we detect a mds session reset, close the old ceph_connection before reopening it. This ensures we clean up the old socket properly and keep the ceph_connection state correct. Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com> Reviewed-by: Yehuda Sadeh <yehuda@inktank.com>
2012-07-30libceph: move feature bits to separate headerSage Weil1-0/+1
This is simply cleanup that will keep things more closely synced with the userland code. Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com> Reviewed-by: Yehuda Sadeh <yehuda@inktank.com>
2012-07-30ceph: clean up useless d_parent checksSage Weil1-11/+0
d_parent is never NULL, and IS_ROOT() is the proper way to check for a (non-self-referential) parent. Reported-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Sage Weil <sage@inktank.com>
2012-07-05libceph: set peer name on con_open, not initSage Weil1-3/+4
The peer name may change on each open attempt, even when the connection is reused. Signed-off-by: Sage Weil <sage@inktank.com>
2012-06-06libceph: fully initialize connection in con_init()Alex Elder1-5/+2
Move the initialization of a ceph connection's private pointer, operations vector pointer, and peer name information into ceph_con_init(). Rearrange the arguments so the connection pointer is first. Hide the byte-swapping of the peer entity number inside ceph_con_init() Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
2012-06-01libceph: embed ceph messenger structure in ceph_clientAlex Elder1-1/+1
A ceph client has a pointer to a ceph messenger structure in it. There is always exactly one ceph messenger for a ceph client, so there is no need to allocate it separate from the ceph client structure. Switch the ceph_client structure to embed its ceph_messenger structure. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Yehuda Sadeh <yehuda@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
2012-05-17ceph: use info returned by get_authorizerAlex Elder1-8/+1
Rather than passing a bunch of arguments to be filled in with the content of the ceph_auth_handshake buffer now returned by the get_authorizer method, just use the returned information in the caller, and drop the unnecessary arguments. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
2012-05-17ceph: have get_authorizer methods return pointersAlex Elder1-7/+13
Have the get_authorizer auth_client method return a ceph_auth pointer rather than an integer, pointer-encoding any returned error value. This is to pave the way for making use of the returned value in an upcoming patch. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
2012-05-17ceph: ensure auth ops are defined before useAlex Elder1-8/+6
In the create_authorizer method for both the mds and osd clients, the auth_client->ops pointer is blindly dereferenced. There is no obvious guarantee that this pointer has been assigned. And furthermore, even if the ops pointer is non-null there is definitely no guarantee that the create_authorizer or destroy_authorizer methods are defined. Add checks in both routines to make sure they are defined (non-null) before use. Add similar checks in a few other spots in these files while we're at it. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
2012-05-17ceph: messenger: reduce args to create_authorizerAlex Elder1-15/+12
Make use of the new ceph_auth_handshake structure in order to reduce the number of arguments passed to the create_authorizor method in ceph_auth_client_ops. Use a local variable of that type as a shorthand in the get_authorizer method definitions. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
2012-05-17ceph: define ceph_auth_handshake typeAlex Elder1-16/+16
The definitions for the ceph_mds_session and ceph_osd both contain five fields related only to "authorizers." Encapsulate those fields into their own struct type, allowing for better isolation in some upcoming patches. Fix the #includes in "linux/ceph/osd_client.h" to lay out their more complete canonical path. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
2012-03-22ceph: don't reset s_cap_ttl to zeroAlex Elder1-4/+3
Avoid the need to check for a special zero s_cap_ttl value by just using (jiffies - 1) as the value assigned to indicate "sometime in the past." Signed-off-by: Alex Elder <elder@dreamhost.com> Reviewed-by: Sage Weil <sage@newdream.net>
2012-02-02Merge branch 'for-linus' of ↵Linus Torvalds1-3/+7
git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: rbd: fix safety of rbd_put_client() rbd: fix a memory leak in rbd_get_client() ceph: create a new session lock to avoid lock inversion ceph: fix length validation in parse_reply_info() ceph: initialize client debugfs outside of monc->mutex ceph: change "ceph.layout" xattr to be "ceph.file.layout"
2012-02-02ceph: create a new session lock to avoid lock inversionAlex Elder1-3/+5
Lockdep was reporting a possible circular lock dependency in dentry_lease_is_valid(). That function needs to sample the session's s_cap_gen and and s_cap_ttl fields coherently, but needs to do so while holding a dentry lock. The s_cap_lock field was being used to protect the two fields, but that can't be taken while holding a lock on a dentry within the session. In most cases, the s_cap_gen and s_cap_ttl fields only get operated on separately. But in three cases they need to be updated together. Implement a new lock to protect the spots updating both fields atomically is required. Signed-off-by: Alex Elder <elder@dreamhost.com> Reviewed-by: Sage Weil <sage@newdream.net>
2012-02-02ceph: fix length validation in parse_reply_info()Xi Wang1-0/+2
"len" is read from network and thus needs validation. Otherwise, given a bogus "len" value, p+len could be an out-of-bounds pointer, which is used in further parsing. Signed-off-by: Xi Wang <xi.wang@gmail.com> Signed-off-by: Sage Weil <sage@newdream.net>
2012-01-10ceph: remove unnecessary d_fsdata conditional checksSage Weil1-2/+2
We now set d_fsdata unconditionally on all dentries prior to setting up the d_ops, so all of these checks are unnecessary. Signed-off-by: Sage Weil <sage@newdream.net>
2011-12-13ceph: add missing spin_unlock at ceph_mdsc_build_path()Yehuda Sadeh1-0/+1
one of the paths was missing spin_unlock Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
2011-12-07ceph: use i_ceph_lock instead of i_lockSage Weil1-16/+16
We have been using i_lock to protect all kinds of data structures in the ceph_inode_info struct, including lists of inodes that we need to iterate over while avoiding races with inode destruction. That requires grabbing a reference to the inode with the list lock protected, but igrab() now takes i_lock to check the inode flags. Changing the list lock ordering would be a painful process. However, using a ceph-specific i_ceph_lock in the ceph inode instead of i_lock is a simple mechanical change and avoids the ordering constraints imposed by igrab(). Reported-by: Amon Ott <a.ott@m-privacy.de> Signed-off-by: Sage Weil <sage@newdream.net>
2011-11-05ceph/mds_client.c: quiet sparse noiseH Hartley Sweeten1-2/+2
Quiet the following sparse noise: warning: symbol 'get_nonsnap_parent' was not declared. Should it be static? warning: symbol 'done_closing_sessions' was not declared. Should it be static? Local functions don't need external visability. Make them static. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Sage Weil <sage@newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
2011-11-05ceph: use new D_COMPLETE dentry flagSage Weil1-3/+3
We used to use a flag on the directory inode to track whether the dcache contents for a directory were a complete cached copy. Switch to a dentry flag CEPH_D_COMPLETE that is safely updated by ->d_prune(). Signed-off-by: Sage Weil <sage@newdream.net>
2011-10-25libceph: don't complain on msgpool alloc failuresSage Weil1-5/+6
The pool allocation failures are masked by the pool; there is no need to spam the console about them. (That's the whole point of having the pool in the first place.) Mark msg allocations whose failure is safely handled as such. Signed-off-by: Sage Weil <sage@newdream.net>
2011-08-15ceph: fix encoding of ino only (not relative) pathsSage Weil1-1/+1
A 'path' consists of a starting ino and relative component. Encode even when there is no relative component. This is primarily needed by the NFS reexport code. Signed-off-by: Sage Weil <sage@newdream.net>
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