- 17 Apr, 2005 1 commit
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David Brownell authored
This reverts a fs/char_dev.c patch that was merged into BK on March 3. The problem is that it breaks things ... __register_chrdev_region() has a block of code, commented "temporary" for over two years now, which fails rudely during PCMCIA initialization or other register_chrdev() calls, because it doesn't "degrade to linked list". This keeps whole subsystems from working. A real fix to that "temporary" code should be possible, using some better scheme to allocate major numbers, but it's not something I want to spend time on just now. Signed-off-by:
David Brownell <dbrownell@users.sourceforge.net> Acked-by:
Matt Mackall <mpm@selenic.com> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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- 16 Apr, 2005 39 commits
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NeilBrown authored
The conditions that cause these calls to MD_BUG are not kernel bugs, just oddities in what userspace is asking for. Also convert analyze_sbs to return void, and the value it returned was always 0. Signed-off-by:
Neil Brown <neilb@cse.unsw.edu.au> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
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NeilBrown authored
There is a tiny race when de-registering an MD thread, in that the thread could disappear before it is set a SIGKILL, causing send_sig to have problems. This is most easily closed by holding tasklist_lock between enabling the thread to exit (setting ->run to NULL) and telling it to exit. (akpm: ick. Needs to use kthread API and stop using signals) Signed-off-by:
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Benjamin Herrenschmidt authored
This patch does the long overdue updates to MAINTAINERS file for aty128fb and radeonfb. Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
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Russell King authored
Fix the formatting of some comments in 8250.c, and add a note that the register_serial / unregister_serial shouldn't be used in new code. We do this here in preference to adding to linux/serial.h, since that is used by a number of non-8250 drivers which pretend to be 8250. It is not known whether it would be appropriate to do so. Signed-off-by:
Russell King <rmk@arm.linux.org.uk> Signed-off-by:
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NeilBrown authored
We were failing to close on an error path, resulting in a leak of struct files which could take a v4 server down fairly quickly.... So call nfs4_close_delegation instead of just open-coding parts of it. Simplify the cleanup on delegation failure while we're at it. Signed-off-by:
J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by:
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NeilBrown authored
rpc_create_clnt and friends return errors, not NULL, on failure. Signed-off-by:
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NeilBrown authored
Fixes the error "RPC: failed to contact portmap (errno -512)." when the server later tries to unregister from the portmapper. Signed-off-by:
Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by:
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akpm@osdl.org authored
This fixes the lots-of-fsx-linux-instances-cause-a-slow-leak bug. It's been there since 2.6.6, caused by: ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.5/2.6.5-mm4/broken-out/jbd-move-locked-buffers.patch That patch moves under-writeout ordered-data buffers onto a separate journal list during commit. It took out the old code which was based on a single list. The old code (necessarily) had logic which would restart I/O against buffers which had been redirtied while they were on the committing transaction's t_sync_datalist list. The new code only writes buffers once, ignoring redirtyings by a later transaction, which is good. But over on the truncate side of things, in journal_unmap_buffer(), we're treating buffers on the t_locked_list as inviolable things which belong to the committing transaction, and we just leave them alone during concurrent truncate-vs-commit. The net effect is that when truncate tries to invalidate a page whose buffers are on t_locked_list and have been redirtied, journal_unmap_buffer() just leaves those buffers alone. truncate will remove the page from its mapping and we end up with an anonymous clean page with dirty buffers, which is an illegal state for a page. The JBD commit will not clean those buffers as they are removed from t_locked_list. The VM (try_to_free_buffers) cannot reclaim these pages. The patch teaches journal_unmap_buffer() about buffers which are on the committing transaction's t_locked_list. These buffers have been written and I/O has completed. We can take them off the transaction and undirty them within the context of journal_invalidatepage()->journal_unmap_buffer(). Acked-by:
"Stephen C. Tweedie" <sct@redhat.com> Signed-off-by:
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Roland Dreier authored
Correct unwinding in error path of mthca_init_icm(). Signed-off-by:
Roland Dreier <roland@topspin.com> Signed-off-by:
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Roland Dreier authored
Decouple table of HCA features from exact HCA device type. Add a current FW version field so we can warn when someone is using old FW. Add support for new MT25204 HCA. Remove the warning about mem-free support, since it should be pretty solid at this point. Signed-off-by:
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Roland Dreier authored
Fix RDMA in mem-free mode: we need to make sure that the RDMA context memory is mapped for the HCA. Signed-off-by:
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Roland Dreier authored
Update initialization of receive queue to match new documentation. This change is required to support new MT25204 HCA. Signed-off-by:
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Roland Dreier authored
Clean up mem-free mode support by introducing mthca_is_memfree() function, which encapsulates the logic of deciding if a device is mem-free. Signed-off-by:
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Roland Dreier authored
Minor tweaks to firmware command handling: kill off an unused get of a value, and add a little more info to debug output. Signed-off-by:
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Michael S. Tsirkin authored
Implement fast memory regions (FMRs), where the driver writes directly into the HCA's translation tables rather than requiring a firmware command. For Tavor, MTTs for FMR are separate from regular MTTs, and are reserved at driver initialization. This is done to limit the amount of virtual memory needed to map the MTTs. For Arbel, there's no such limitation, and all MTTs and MPTs may be used for FMR or for regular MR. Signed-off-by:
Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by:
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Michael S. Tsirkin authored
Split Tavor and Arbel/mem-free index<->hw key munging routines, so that FMR implementation can call correct implementation without testing HCA type (which it already knows). Signed-off-by:
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Michael S. Tsirkin authored
Add mthca_table_find() function, which returns the lowmem address of an entry in a mem-free HCA's context tables. This will be used by the FMR implementation. Signed-off-by:
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Michael S. Tsirkin authored
Add code for SYNC_TPT firmware command, which will be used by FMR implementation. Signed-off-by:
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Michael S. Tsirkin authored
Add mthca_write64_raw() function, which will be used to write FMR entries that are in ioremapped PCI memory. Signed-off-by:
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Michael S. Tsirkin authored
Encapsulate the buddy allocator used for MTT segments. This cleans up the code and also gets us ready to add FMR support. Signed-off-by:
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Roland Dreier authored
Make address handle verbs usable from interrupt context. Signed-off-by:
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Michael S. Tsirkin authored
Fill in missing fields in send completions. Signed-off-by:
Itamar Rabenstein <itamar@mellanox.co.il> Signed-off-by:
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Roland Dreier authored
Fix bug in MTT allocation in mem-free mode. I misunderstood the MTT size value returned by the firmware -- it is really the size of a single MTT entry, since mem-free mode does not segment the MTT as the original firmware did. This meant that our MTT addresses ended up being off by a factor of 8. This meant that our MTT allocations might overlap, and so we could overwrite and corrupt earlier memory regions when writing new MTT entries. We fix this by always using our 64-byte MTT segment size. This allows some simplification of the code as well, since there's no reason to put the MTT segment size in a variable -- we can always use our enum value directly. Signed-off-by:
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Roland Dreier authored
Add code to support RDMA and atomic send work requests in mem-free mode. Signed-off-by:
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Roland Dreier authored
CQ numbers are only 24 bits, so only print 6 hex digits and mask off reserved part when reporting a CQ event. Signed-off-by:
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Roland Dreier authored
On error path, only free doorbell records if we're in mem-free mode. Signed-off-by:
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Roland Dreier authored
Print IRQ number when NOP command interrupt test fails to help debugging. Signed-off-by:
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Roland Dreier authored
Release mutex on error return path from mthca_alloc_db(). Signed-off-by:
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Michael S. Tsirkin authored
Fix error handling in MR allocation for mem-free mode: mthca_free must get an MR index, not a key. Signed-off-by:
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Roland Dreier authored
Doorbell record pages are allocated in HCA page size chunks (always 4096 bytes), so we need to divide by 4096 and not PAGE_SIZE when figuring out how many pages we'll need space for. Signed-off-by:
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Roland Dreier authored
It's cleaner to kfree mthca_mr, and not rely on the fact that ib_mr is the first field in mthca_mr. Signed-off-by:
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Michael S. Tsirkin authored
The first buffer of a memory region is not required to be page-aligned, so don't return an error if it's not. Signed-off-by:
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Roland Dreier authored
When posting a work request with immediate data, put the immediate data in the immediate data field of the hardware's work request (rather than overwriting the flags field). Signed-off-by:
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Roland Dreier authored
Fix calculation of rdb_shift by using original number of QPs, not their slot in profile[] (which will be rearranged when we sort it). Signed-off-by:
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Roland Dreier authored
Implement more of the device_query method in mthca. Signed-off-by:
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Roland Dreier authored
In mem-free mode, when allocating memory regions, make sure that the HCA has context memory mapped to cover the virtual space used for the MPT and MTTs being used. Signed-off-by:
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Hal Rosenstock authored
Eliminate unneeded and misleading comments Signed-off-by:
Hal Rosenstock <halr@voltaire.com> Signed-off-by:
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Roland Dreier authored
Fix handling of MAD agent registrations with mgmt_class == 0. In this case ib_umad should pass a NULL registration request to the MAD core rather than a request with mgmt_class set to 0. Signed-off-by:
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Libor Michalek authored
Add missing newline in printk. Signed-off-by:
Libor Michalek <libor@topspin.com> Signed-off-by:
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