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* mm: migration: avoid race between shift_arg_pages() and rmap_walk() during ↵Mel Gorman2010-05-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | migration by not migrating temporary stacks Page migration requires rmap to be able to find all ptes mapping a page at all times, otherwise the migration entry can be instantiated, but it is possible to leave one behind if the second rmap_walk fails to find the page. If this page is later faulted, migration_entry_to_page() will call BUG because the page is locked indicating the page was migrated by the migration PTE not cleaned up. For example kernel BUG at include/linux/swapops.h:105! invalid opcode: 0000 [#1] PREEMPT SMP ... Call Trace: [<ffffffff810e951a>] handle_mm_fault+0x3f8/0x76a [<ffffffff8130c7a2>] do_page_fault+0x44a/0x46e [<ffffffff813099b5>] page_fault+0x25/0x30 [<ffffffff8114de33>] load_elf_binary+0x152a/0x192b [<ffffffff8111329b>] search_binary_handler+0x173/0x313 [<ffffffff81114896>] do_execve+0x219/0x30a [<ffffffff8100a5c6>] sys_execve+0x43/0x5e [<ffffffff8100320a>] stub_execve+0x6a/0xc0 RIP [<ffffffff811094ff>] migration_entry_wait+0xc1/0x129 There is a race between shift_arg_pages and migration that triggers this bug. A temporary stack is setup during exec and later moved. If migration moves a page in the temporary stack and the VMA is then removed before migration completes, the migration PTE may not be found leading to a BUG when the stack is faulted. This patch causes pages within the temporary stack during exec to be skipped by migration. It does this by marking the VMA covering the temporary stack with an otherwise impossible combination of VMA flags. These flags are cleared when the temporary stack is moved to its final location. [kamezawa.hiroyu@jp.fujitsu.com: idea for having migration skip temporary stacks] Signed-off-by: Mel Gorman <mel@csn.ul.ie> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Reviewed-by: Rik van Riel <riel@redhat.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Minchan Kim <minchan.kim@gmail.com> Cc: Christoph Lameter <cl@linux.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pagemap: add #ifdefs CONFIG_HUGETLB_PAGE on code walking hugetlb vmaNaoya Horiguchi2010-05-25
| | | | | | | | | | If !CONFIG_HUGETLB_PAGE, pagemap_hugetlb_range() is never called. So put it (and its calling function) into #ifdef block. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Acked-by: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'bkl/ioctl' of ↵Linus Torvalds2010-05-24
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing * 'bkl/ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing: uml: Pushdown the bkl from harddog_kern ioctl sunrpc: Pushdown the bkl from sunrpc cache ioctl sunrpc: Pushdown the bkl from ioctl autofs4: Pushdown the bkl from ioctl uml: Convert to unlocked_ioctls to remove implicit BKL ncpfs: BKL ioctl pushdown coda: Clean-up whitespace problems in pioctl.c coda: BKL ioctl pushdown drivers: Push down BKL into various drivers isdn: Push down BKL into ioctl functions scsi: Push down BKL into ioctl functions dvb: Push down BKL into ioctl functions smbfs: Push down BKL into ioctl function coda/psdev: Remove BKL from ioctl function um/mmapper: Remove BKL usage sn_hwperf: Kill BKL usage hfsplus: Push down BKL into ioctl function
| * autofs4: Pushdown the bkl from ioctlFrederic Weisbecker2010-05-22
| | | | | | | | | | | | | | | | | | | | | | Pushdown the bkl to autofs4_root_ioctl. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ian Kent <raven@themaw.net> Cc: Autofs <autofs@linux.kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: John Kacur <jkacur@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de>
| * ncpfs: BKL ioctl pushdownJohn Kacur2010-05-16
| | | | | | | | | | | | | | | | | | | | | | Convert ncp_ioctl to an unlocked_ioctl and push down the bkl into it. Signed-off-by: John Kacur <jkacur@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Petr Vandrovec <vandrove@vc.cvut.cz> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
| * coda: Clean-up whitespace problems in pioctl.cJohn Kacur2010-05-16
| | | | | | | | | | | | | | | | | | Signed-off-by: John Kacur <jkacur@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jan Harkes <jaharkes@cs.cmu.edu> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
| * coda: BKL ioctl pushdownJohn Kacur2010-05-16
| | | | | | | | | | | | | | | | | | | | | | | | Convert coda_pioctl to an unlocked_ioctl pushing down the BKL into it. Signed-off-by: John Kacur <jkacur@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jan Harkes <jaharkes@cs.cmu.edu> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
| * smbfs: Push down BKL into ioctl functionArnd Bergmann2010-05-16
| | | | | | | | | | | | | | | | | | Converting from ->ioctl to ->unlocked_ioctl with explicit lock_kernel lets us kill the ioctl operation. Signed-off-by: Arnd Bergmann <arnd@arndb.de> [fixed inode reference in smb_ioctl] Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
| * coda/psdev: Remove BKL from ioctl functionArnd Bergmann2010-05-16
| | | | | | | | | | | | | | | | The ioctl function returns constant results, so it obviously does not need the BKL and can be converted to unlocked_ioctl. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
| * hfsplus: Push down BKL into ioctl functionArnd Bergmann2010-05-16
| | | | | | | | | | | | | | | | HFS is one of the remaining users of the ->ioctl function, convert it blindly to unlocked_ioctl by pushing down the BKL. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
* | Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osdLinus Torvalds2010-05-24
|\ \ | | | | | | | | | | | | | | | * 'for-linus' of git://git.open-osd.org/linux-open-osd: exofs: confusion between kmap() and kmap_atomic() api exofs: Add default address_space_operations
| * | exofs: confusion between kmap() and kmap_atomic() apiDan Carpenter2010-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For kmap_atomic() we call kunmap_atomic() on the returned pointer. That's different from kmap() and kunmap() and so it's easy to get them backwards. Cc: Stable <stable@kernel.org> Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
| * | exofs: Add default address_space_operationsBoaz Harrosh2010-05-17
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All vectors of address_space_operations should be initialized by the filesystem. Add the missing parts. This is actually an optimization, by using __set_page_dirty_nobuffers. The default, in case of NULL, would be __set_page_dirty_buffers which has these extar if(s). .releasepage && .invalidatepage should both not be called because page_private() is NULL in exofs. Put a WARN_ON if they are called, to indicate the Kernel has changed in this regard, if when it does. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6Linus Torvalds2010-05-24
|\ \ | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6: fat: convert to unlocked_ioctl fat: Cleanup nls_unload() usage fat: use pack_hex_byte() instead of custom one
| * | fat: convert to unlocked_ioctlArnd Bergmann2010-05-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | FAT does not require the BKL in its ioctl function, which is already serialized through a mutex. Since we're already touching the ioctl code, also fix the missing handling of FAT_IOCTL_GET_ATTRIBUTES in the compat code. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
| * | fat: Cleanup nls_unload() usageOGAWA Hirofumi2010-03-15
| | | | | | | | | | | | | | | | | | | | | Other users doesn't check NULL explicitly. So, these doesn't also check to remove inconsistency. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
| * | fat: use pack_hex_byte() instead of custom oneAndy Shevchenko2010-03-15
| | | | | | | | | | | | | | | Signed-off-by: Andy Shevchenko <ext-andriy.shevchenko@nokia.com> Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2010-05-24
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs: 9p: Optimize TCREATE by eliminating a redundant fid clone. 9p: cleanup: remove unneeded assignment 9p: Add mksock support fs/9p: Make sure we properly instantiate dentry. 9p: add 9P2000.L rename operation 9p: add 9P2000.L statfs operation 9p: VFS switches for 9p2000.L: VFS switches 9p: VFS switches for 9p2000.L: protocol and client changes
| * | | 9p: Optimize TCREATE by eliminating a redundant fid clone.Venkateswararao Jujjuri2010-05-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes a redundant fid clone on the directory fid and hence reduces a server transaction while creating new filesystem object. Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
| * | | 9p: cleanup: remove unneeded assignmentDan Carpenter2010-05-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | We never use "v9ses" and so we can remove it. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
| * | | 9p: Add mksock supportVenkateswararao Jujjuri2010-05-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Without this patch, an attempt to mksock will get an EINVAL. Before this patch: [root@localhost 1dir]# mksock mysock mksock: error making mysock: Invalid argument With this patch: [root@localhost 1dir]# mksock mysock [root@localhost 1dir]# ls -l mysock s--------- 1 root root 0 2010-03-31 17:44 mysock Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
| * | | fs/9p: Make sure we properly instantiate dentry.Aneesh Kumar K.V2010-05-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For lookup if we get ENOENT error from the server we still instantiate the dentry. We need to make sure we have dentry operations set in that case so that a later dput on the dentry does the expected. Without the patch we get the below error #ln -sf abc abclink ln: creating symbolic link `abclink': No such file or directory Now on the host do $ touch abclink Guest now gives ENOENT error. # ls ls: cannot access abclink: No such file or directory Debugged-by:Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
| * | | 9p: add 9P2000.L rename operationSripathi Kodi2010-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I made a V2 of this patch on top of my patches for VFS switches. All the changes were due to change in some offsets. rename - change name of file or directory size[4] Trename tag[2] fid[4] newdirfid[4] name[s] size[4] Rrename tag[2] The rename message is used to change the name of a file, possibly moving it to a new directory. The 9P wstat message can only rename a file within the same directory. Signed-off-by: Jim Garlick <garlick@llnl.gov> Signed-off-by: Sripathi Kodi <sripathik@in.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
| * | | 9p: add 9P2000.L statfs operationSripathi Kodi2010-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I made a V2 of this patch on top of my patches for VFS switches. The change was adding v9fs_statfs pointer to v9fs_super_ops_dotl instead of v9fs_super_ops. statfs - get file system statistics size[4] Tstatfs tag[2] fid[4] size[4] Rstatfs tag[2] type[4] bsize[4] blocks[8] bfree[8] bavail[8] files[8] ffree[8] fsid[8] namelen[4] The statfs message is used to request file system information returned by the statfs(2) system call, which is used by df(1) to report file system and disk space usage. Signed-off-by: Jim Garlick <garlick@llnl.gov> Signed-off-by: Sripathi Kodi <sripathik@in.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
| * | | 9p: VFS switches for 9p2000.L: VFS switchesSripathi Kodi2010-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Implements VFS switches for 9p2000.L protocol. Signed-off-by: Sripathi Kodi <sripathik@in.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
* | | | Merge branch 'for-linus' of ↵Linus Torvalds2010-05-24
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: (59 commits) ceph: reuse mon subscribe message instead of allocated anew ceph: avoid resending queued message to monitor ceph: Storage class should be before const qualifier ceph: all allocation functions should get gfp_mask ceph: specify max_bytes on readdir replies ceph: cleanup pool op strings ceph: Use kzalloc ceph: use common helper for aborted dir request invalidation ceph: cope with out of order (unsafe after safe) mds reply ceph: save peer feature bits in connection structure ceph: resync headers with userland ceph: use ceph. prefix for virtual xattrs ceph: throw out dirty caps metadata, data on session teardown ceph: attempt mds reconnect if mds closes our session ceph: clean up send_mds_reconnect interface ceph: wait for mds OPEN reply to indicate reconnect success ceph: only send cap releases when mds is OPEN|HUNG ceph: dicard cap releases on mds restart ceph: make mon client statfs handling more generic ceph: drop src address(es) from message header [new protocol feature] ...
| * | | | ceph: reuse mon subscribe message instead of allocated anewSage Weil2010-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the same message, allocated during startup. No need to reallocate a new one each time around (and potentially ENOMEM). Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: avoid resending queued message to monitorSage Weil2010-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The auth_reply handler will (re)send any pending requests. For the initial mon authenticate phase, that's correct, but when a auth ticket renewal races with an in-flight request, we may resend a request message that is already in flight. Avoid this by revoking the message before sending it. We should also avoid resending requests at all during ticket renewal; that will come soon. Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: Storage class should be before const qualifierTobias Klauser2010-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The C99 specification states in section 6.11.5: The placement of a storage-class specifier other than at the beginning of the declaration specifiers in a declaration is an obsolescent feature. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: all allocation functions should get gfp_maskYehuda Sadeh2010-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is essential, as for the rados block device we'll need to run in different contexts that would need flags that are other than GFP_NOFS. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: specify max_bytes on readdir repliesSage Weil2010-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Specify max bytes in request to bound size of reply. Add associated mount option with default value of 512 KB. Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: cleanup pool op stringsSage Weil2010-05-17
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: Use kzallocJulia Lawall2010-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use kzalloc rather than the combination of kmalloc and memset. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression x,size,flags; statement S; @@ -x = kmalloc(size,flags); +x = kzalloc(size,flags); if (x == NULL) S -memset(x, 0, size); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: use common helper for aborted dir request invalidationSage Weil2010-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We invalidate I_COMPLETE and dentry leases in two places: on aborted mds request and on request replay. Use common helper to avoid duplicate code. Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: cope with out of order (unsafe after safe) mds replySage Weil2010-05-17
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: save peer feature bits in connection structureSage Weil2010-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These are used for adjusting behavior, such as conditionally encoding a newer message format. Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: resync headers with userlandSage Weil2010-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Notable changes include pool op defines and types, FLOCK feature bit, and new CMPXATTR osd ops. Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: use ceph. prefix for virtual xattrsSage Weil2010-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Drop the 'user.' prefix and use just 'ceph.' for fs virtual xattrs. Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: throw out dirty caps metadata, data on session teardownSage Weil2010-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The remove_session_caps() helper is called when an MDS closes out our session (either normally, or as a result of a failed reconnect), and when we tear down state for umount. If we remove the last cap, and there are no cap migrations in progress, then there is little hope of us flushing out that data to the mds (without heroic efforts to reconnect and flush). So, to avoid leaving inodes pinned (due to dirty state) and crashing after umount, throw out dirty caps state and unpin the inodes. Print a warning to the console so we know something was lost. NOTE: Although we drop wrbuffer refs, we don't actually mark pages clean; maybe a truncate should be queued? Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: attempt mds reconnect if mds closes our sessionSage Weil2010-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, if our session is closed (due to a timeout, or explicit close, or whatever), we just sit there doing nothing unless/until the MDS restarts, at which point we try to reconnect. Change client to attempt an immediate reconnect if our session is closed. Note that currently the MDS doesn't support this, and our attempt will fail. We'll get a session CLOSE, our caps and dirty cap state will be dropped, and the client will be free to attempt to reconnect. That's clearly not as nice as a successful reconnect, but it at least allows us to try to carry on, and in the future the MDS will support a reconnect and we will fare better. Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: clean up send_mds_reconnect interfaceSage Weil2010-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pass a ceph_mds_session, since the caller has it. Remove the dead code for sending empty reconnects. It used to be used when the MDS contacted _us_ to solicit a reconnect, and we could reply saying "go away, I have no session." Now we only send reconnects based on the mds map, and only when we do in fact have an open session. Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: wait for mds OPEN reply to indicate reconnect successSage Weil2010-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We used to infer reconnect success by watching the MDS state, essentially assuming that hearing nothing meant things were ok. That wasn't particularly reliable. Instead, the MDS replies with an explicit OPEN message to indicate success. Strictly speaking, this is a protocol change, but it is a backwards compatible one that does not break new clients + old servers or old clients + new servers. At least not yet. Drop unused @all argument from kick_requests while we're at it. Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: only send cap releases when mds is OPEN|HUNGSage Weil2010-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On OPENING we shouldn't have any caps (or releases). On CLOSING, we should wait until we succeed (and throw it all out), or don't (and are OPEN again). On RECONNECTING we can wait until we are OPEN. Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: dicard cap releases on mds restartSage Weil2010-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the MDS restarts, the expire caps state is no longer shared, and can be thrown out. Caps state will be rebuilt on the MDS during the reconnect process that follows. Zero out any release messages and adjust the release counter accordingly. Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: make mon client statfs handling more genericYehuda Sadeh2010-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is being done so that we could reuse the statfs infrastructure with other requests that return values. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: drop src address(es) from message header [new protocol feature]Sage Weil2010-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The CEPH_FEATURE_NOSRCADDR protocol feature avoids putting the full source address in each message header (twice). This patch switches the client to the new scheme, and _requires_ this feature on the server. The server will support both the old and new schemes. That means an old client will work with a new server, but a new client will not work with an old server. Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: cleanup: remove unused assignementDan Carpenter2010-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We don't ever use "dirty" so we can remove it. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: clean up cap release loop vs spinlockSage Weil2010-05-17
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: name bdi ceph-%d instead of major:minorSage Weil2010-05-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The bdi_setup_and_register() helper doesn't help us since we bdi_init() in create_client() and bdi_register() only when sget() succeeds. Signed-off-by: Sage Weil <sage@newdream.net>
| * | | | ceph: skip mds sync on forced unmountSage Weil2010-05-17
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Sage Weil <sage@newdream.net>
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