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2011-01-13Merge branch 'for-linus' of ↵Linus Torvalds3-45/+8
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 cleanup when trying to mount inexistent image net/ceph: make ceph_msgr_wq non-reentrant ceph: fsc->*_wq's aren't used in memory reclaim path ceph: Always free allocated memory in osdmap_decode() ceph: Makefile: Remove unnessary code ceph: associate requests with opening sessions ceph: drop redundant r_mds field ceph: implement DIRLAYOUTHASH feature to get dir layout from MDS ceph: add dir_layout to inode
2011-01-12net/ceph: make ceph_msgr_wq non-reentrantTejun Heo1-44/+2
ceph messenger code does a rather complex dancing around multithread workqueue to make sure the same work item isn't executed concurrently on different CPUs. This restriction can be provided by workqueue with WQ_NON_REENTRANT. Make ceph_msgr_wq non-reentrant workqueue with the default concurrency level and remove the QUEUED/BUSY logic. * This removes backoff handling in con_work() but it couldn't reliably block execution of con_work() to begin with - queue_con() can be called after the work started but before BUSY is set. It seems that it was an optimization for a rather cold path and can be safely removed. * The number of concurrent work items is bound by the number of connections and connetions are independent from each other. With the default concurrency level, different connections will be executed independently. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Sage Weil <sage@newdream.net> Cc: ceph-devel@vger.kernel.org Signed-off-by: Sage Weil <sage@newdream.net>
2011-01-12ceph: Always free allocated memory in osdmap_decode()Jesper Juhl1-1/+3
Always free memory allocated to 'pi' in net/ceph/osdmap.c::osdmap_decode(). Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Sage Weil <sage@newdream.net>
2011-01-12ceph: add dir_layout to inodeSage Weil1-0/+3
Add a ceph_dir_layout to the inode, and calculate dentry hash values based on the parent directory's specified dir_hash function. This is needed because the old default Linux dcache hash function is extremely week and leads to a poor distribution of files among dir fragments. Signed-off-by: Sage Weil <sage@newdream.net>
2010-12-26Merge branch 'master' of ↵David S. Miller3-27/+35
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: net/ipv4/fib_frontend.c
2010-12-20Merge branch 'for-linus' of ↵Linus Torvalds2-11/+12
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: ceph: handle partial result from get_user_pages ceph: mark user pages dirty on direct-io reads ceph: fix null pointer dereference in ceph_init_dentry for nfs reexport ceph: fix direct-io on non-page-aligned buffers ceph: fix msgr_init error path
2010-12-17ceph: handle partial result from get_user_pagesHenry C Chang1-2/+2
The get_user_pages() helper can return fewer than the requested pages. Error out in that case, and clean up the partial result. Signed-off-by: Henry C Chang <henry_c_chang@tcloudcomputing.com> Signed-off-by: Sage Weil <sage@newdream.net>
2010-12-17ceph: mark user pages dirty on direct-io readsHenry C Chang1-4/+7
For read operation, we have to set the argument _write_ of get_user_pages to 1 since we will write data to pages. Also, we need to SetPageDirty before releasing these pages. Signed-off-by: Henry C Chang <henry_c_chang@tcloudcomputing.com> Signed-off-by: Sage Weil <sage@newdream.net>
2010-12-13ceph: fix msgr_init error pathSage Weil1-5/+3
create_workqueue() returns NULL on failure. Signed-off-by: Sage Weil <sage@newdream.net>
2010-12-08Merge branch 'master' of ↵David S. Miller2-23/+1
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/wireless/ath/ath9k/ar9003_eeprom.c net/llc/af_llc.c
2010-11-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds1-22/+0
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (27 commits) af_unix: limit recursion level pch_gbe driver: The wrong of initializer entry pch_gbe dreiver: chang author ucc_geth: fix ucc halt problem in half duplex mode inet: Fix __inet_inherit_port() to correctly increment bsockets and num_owners ehea: Add some info messages and fix an issue hso: fix disable_net NET: wan/x25_asy, move lapb_unregister to x25_asy_close_tty cxgb4vf: fix setting unicast/multicast addresses ... net, ppp: Report correct error code if unit allocation failed DECnet: don't leak uninitialized stack byte au1000_eth: fix invalid address accessing the MAC enable register dccp: fix error in updating the GAR tcp: restrict net.ipv4.tcp_adv_win_scale (#20312) netns: Don't leak others' openreq-s in proc Net: ceph: Makefile: Remove unnessary code vhost/net: fix rcu check usage econet: fix CVE-2010-3848 econet: fix CVE-2010-3850 econet: disallow NULL remote addr for sendmsg(), fixes CVE-2010-3849 ...
2010-11-27Net: ceph: Makefile: Remove unnessary codeTracey Dent1-22/+0
Remove the if and else conditional because the code is in mainline and there is no need in it being there. Signed-off-by: Tracey Dent <tdent48227@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-24Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds1-1/+1
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: of/phylib: Use device tree properties to initialize Marvell PHYs. phylib: Add support for Marvell 88E1149R devices. phylib: Use common page register definition for Marvell PHYs. qlge: Fix incorrect usage of module parameters and netdev msg level ipv6: fix missing in6_ifa_put in addrconf SuperH IrDA: correct Baud rate error correction atl1c: Fix hardware type check for enabling OTP CLK net: allow GFP_HIGHMEM in __vmalloc() bonding: change list contact to netdev@vger.kernel.org e1000: fix screaming IRQ
2010-11-22Net: ceph: Makefile: remove deprecated kbuild goal definitionsTracey Dent1-1/+1
Changed Makefile to use <modules>-y instead of <modules>-objs because -objs is deprecated and not mentioned in Documentation/kbuild/makefiles.txt. Signed-off-by: Tracey Dent <tdent48227@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-21net: allow GFP_HIGHMEM in __vmalloc()Eric Dumazet1-1/+1
We forgot to use __GFP_HIGHMEM in several __vmalloc() calls. In ceph, add the missing flag. In fib_trie.c, xfrm_hash.c and request_sock.c, using vzalloc() is cleaner and allows using HIGHMEM pages as well. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-09ceph: explicitly specify page alignment in network messagesSage Weil2-5/+8
The alignment used for reading data into or out of pages used to be taken from the data_off field in the message header. This only worked as long as the page alignment matched the object offset, breaking direct io to non-page aligned offsets. Instead, explicitly specify the page alignment next to the page vector in the ceph_msg struct, and use that instead of the message header (which probably shouldn't be trusted). The alloc_msg callback is responsible for filling in this field properly when it sets up the page vector. Signed-off-by: Sage Weil <sage@newdream.net>
2010-11-09ceph: make page alignment explicit in osd interfaceSage Weil1-8/+14
We used to infer alignment of IOs within a page based on the file offset, which assumed they matched. This broke with direct IO that was not aligned to pages (e.g., 512-byte aligned IO). We were also trusting the alignment specified in the OSD reply, which could have been adjusted by the server. Explicitly specify the page alignment when setting up OSD IO requests. Signed-off-by: Sage Weil <sage@newdream.net>
2010-11-09ceph: fix comment, remove extraneous argsSage Weil1-2/+1
The offset/length arguments aren't used. Signed-off-by: Sage Weil <sage@newdream.net>
2010-11-01ceph: fix small seq message skippingSage Weil1-2/+1
If the client gets out of sync with the server message sequence number, we normally skip low seq messages (ones we already received). The skip code was also incrementing the expected seq, such that all subsequent messages also appeared old and got skipped, and an eventual timeout on the osd connection. This resulted in some lagging requests and console messages like [233480.882885] ceph: skipping osd22 10.138.138.13:6804 seq 2016, expected 2017 [233480.882919] ceph: skipping osd22 10.138.138.13:6804 seq 2017, expected 2018 [233480.882963] ceph: skipping osd22 10.138.138.13:6804 seq 2018, expected 2019 [233480.883488] ceph: skipping osd22 10.138.138.13:6804 seq 2019, expected 2020 [233485.219558] ceph: skipping osd22 10.138.138.13:6804 seq 2020, expected 2021 [233485.906595] ceph: skipping osd22 10.138.138.13:6804 seq 2021, expected 2022 [233490.379536] ceph: skipping osd22 10.138.138.13:6804 seq 2022, expected 2023 [233495.523260] ceph: skipping osd22 10.138.138.13:6804 seq 2023, expected 2024 [233495.923194] ceph: skipping osd22 10.138.138.13:6804 seq 2024, expected 2025 [233500.534614] ceph: tid 6023602 timed out on osd22, will reset osd Reported-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Sage Weil <sage@newdream.net>
2010-10-20ceph: fix num_pages_free accounting in pagelistSage Weil1-0/+1
Decrement the free page counter when removing a page from the free_list. Signed-off-by: Sage Weil <sage@newdream.net>
2010-10-20ceph: don't crash when passed bad mount optionsYehuda Sadeh1-1/+1
This only happened when parse_extra_token was not passed to ceph_parse_option() (hence, only happened in rbd). Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
2010-10-20ceph: add pagelist_reserve, pagelist_truncate, pagelist_set_cursorGreg Farnum1-9/+97
These facilitate preallocation of pages so that we can encode into the pagelist in an atomic context. Signed-off-by: Greg Farnum <gregf@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
2010-10-20rbd: introduce rados block device (rbd), based on libcephYehuda Sadeh1-2/+1
The rados block device (rbd), based on osdblk, creates a block device that is backed by objects stored in the Ceph distributed object storage cluster. Each device consists of a single metadata object and data striped over many data objects. The rbd driver supports read-only snapshots. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
2010-10-20ceph: factor out libceph from Ceph file systemYehuda Sadeh27-0/+10660
This factors out protocol and low-level storage parts of ceph into a separate libceph module living in net/ceph and include/linux/ceph. This is mostly a matter of moving files around. However, a few key pieces of the interface change as well: - ceph_client becomes ceph_fs_client and ceph_client, where the latter captures the mon and osd clients, and the fs_client gets the mds client and file system specific pieces. - Mount option parsing and debugfs setup is correspondingly broken into two pieces. - The mon client gets a generic handler callback for otherwise unknown messages (mds map, in this case). - The basic supported/required feature bits can be expanded (and are by ceph_fs_client). No functional change, aside from some subtle error handling cases that got cleaned up in the refactoring process. Signed-off-by: Sage Weil <sage@newdream.net>
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