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* lockd: Fix stale nlmsvc_unlink_block commentJ. Bruce Fields2008-04-231-2/+1
| | | | | | | | | | | As of 5996a298da43a03081e9ba2116983d173001c862 ("NLM: don't unlock on cancel requests") we no longer unlock in this case, so the comment is no longer accurate. Thanks to Stuart Friedberg for pointing out the inconsistency. Cc: Stuart Friedberg <sfriedberg@hp.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* NFSD: Strip __KERNEL__ testing from unexported header files.Robert P. J. Day2008-04-233-7/+2
| | | | | | | Also, sort the Kbuild file. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* sunrpc: make token header values less confusingKevin Coffman2008-04-234-8/+8
| | | | | | | | | | | | | | g_make_token_header() and g_token_size() add two too many, and therefore their callers pass in "(logical_value - 2)" rather than "logical_value" as hard-coded values which causes confusion. This dates back to the original g_make_token_header which took an optional token type (token_id) value and added it to the token. This was removed, but the routine always adds room for the token_id rather than not. Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* gss_krb5: consistently use unsigned for seqnumKevin Coffman2008-04-234-6/+6
| | | | | | | | | | Consistently use unsigned (u32 vs. s32) for seqnum. In get_mic function, send the local copy of seq_send, rather than the context version. Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* NFSD: Remove NFSv4 dependency on NFSv3Chuck Lever2008-04-231-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Clean up: Because NFSD_V4 "depends on" NFSD_V3, it appears as a child of the NFSD_V3 menu entry, and is not visible if NFSD_V3 is unselected. Replace the dependency on NFSD_V3 with a "select NFSD_V3". This makes NFSD_V4 look and work just like NFS_V3, while ensuring that NFSD_V3 is enabled if NFSD_V4 is. Sam Ravnborg adds: "This use of select is questionable. In general it is bad to select a symbol with dependencies. In this case the dependencies of NFSD_V3 are duplicated for NFSD_V4 so we will not se erratic configurations but do you remember to update NFSD_V4 when you add a depends on NFSD_V3? But I see no other clean way to do it right now." Later he said: "My comment was more to say we have things to address in kconfig. This is abuse in the acceptable range." Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* SUNRPC: Remove PROC_FS dependencyChuck Lever2008-04-231-1/+0
| | | | | | | | | | | | | | | | | | Recently, commit 440bcc59 added a reverse dependency to fs/Kconfig to ensure that PROC_FS was enabled if SUNRPC_GSS was enabled. Apparently this isn't necessary because the auth_gss components under net/sunrpc will build correctly even if PROC_FS is disabled, though RPCSEC_GSS will not work without /proc. It also violates the guideline in Documentation/kbuild/kconfig-language.txt that states "In general use select only for non-visible symbols (no prompts anywhere) and for symbols with no dependencies." To address these issues, remove the dependency. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* NFSD: Use "depends on" for PROC_FS dependencyChuck Lever2008-04-231-2/+1
| | | | | | | | | | | | | | | | Recently, commit 440bcc59 added a reverse dependency to fs/Kconfig to ensure that PROC_FS was enabled if NFSD_V4 was enabled. There is a guideline in Documentation/kbuild/kconfig-language.txt that states "In general use select only for non-visible symbols (no prompts anywhere) and for symbols with no dependencies." A quick grep around other Kconfig files reveals that no entry currently uses "select PROC_FS" -- every one uses "depends on". Thus CONFIG_NFSD_V4 should use "depends on PROC_FS" as well. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: move most of fh_verify to separate functionJ. Bruce Fields2008-04-231-105/+123
| | | | | | | | | | | Move the code that actually parses the filehandle and looks up the dentry and export to a separate function. This simplifies the reference counting a little and moves fh_verify() a little closer to the kernel ideal of small, minimally-indentended functions. Clean up a few other minor style sins along the way. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Cc: Neil Brown <neilb@suse.de>
* net/sunrpc/svc.c: suppress unintialized var warningAndrew Morton2008-04-231-1/+1
| | | | | | | | | | | | | net/sunrpc/svc.c: In function '__svc_create_thread': net/sunrpc/svc.c:587: warning: 'oldmask.bits[0u]' may be used uninitialized in this function Cc: Neil Brown <neilb@suse.de> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: David S. Miller <davem@davemloft.net> Cc: Tom Tucker <tom@opengridcomputing.com> Cc: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* Remove define for KRB5_CKSUM_LENGTH, which will become enctype-dependentKevin Coffman2008-04-233-7/+2
| | | | | | | | | cleanup: When adding new encryption types, the checksum length can be different for each enctype. Face the fact that the current code only supports DES which has a checksum length of 8. Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* Correct grammer/typos in dprintksKevin Coffman2008-04-231-3/+3
| | | | | | | cleanup: Fix grammer/typos to use "too" instead of "to" Signed-off-by: Kevin Coffman <kwc@citi.umich.edu> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* SVCRDMA: Add check for XPT_CLOSE in svc_rdma_sendTom Tucker2008-04-231-0/+2
| | | | | | | | | | | | SVCRDMA: Add check for XPT_CLOSE in svc_rdma_send The svcrdma transport can crash if a send is waiting for an empty SQ slot and the connection is closed due to an asynchronous error. The crash is caused when svc_rdma_send attempts to send on a deleted QP. Signed-off-by: Tom Tucker <tom@opengridcomputing.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: initialize lease type in nfs4_open_delegation()Felix Blyakher2008-04-231-2/+2
| | | | | | | | | | | | | | While lease is correctly checked by supplying the type argument to vfs_setlease(), it's stored with fl_type uninitialized. This breaks the logic when checking the type of the lease. The fix is to initialize fl_type. The old code still happened to function correctly since F_RDLCK is zero, and we only implement read delegations currently (nor write delegations). But that's no excuse for not fixing this. Signed-off-by: Felix Blyakher <felixb@sgi.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* Documentation: NFS/RDMA instructions for 2.6.25-rc1James Lentini2008-04-231-0/+252
| | | | | | | | Add some instructions for using the new NFS/RDMA features. Signed-off-by: James Lentini <jlentini@netapp.com> Cc: Roland Dreier <rdreier@cisco.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* NFS: convert nfs4 callback thread to kthread APIJeff Layton2008-04-231-38/+35
| | | | | | | | | | | | | | | | | There's a general push to convert kernel threads to use the (much cleaner) kthread API. This patch converts the NFSv4 callback kernel thread to the kthread API. In addition to being generally cleaner this also removes the dependency on signals when shutting down the thread. Note that this patch depends on the recent patches to svc_recv() to make it check kthread_should_stop() periodically. Those patches are in Bruce's tree at the moment and are slated for 2.6.26 along with the lockd conversion, so this conversion is probably also appropriate for 2.6.26. Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: fix sparse warning in vfs.cHarvey Harrison2008-04-231-1/+1
| | | | | | | fs/nfsd/vfs.c:991:27: warning: Using plain integer as NULL pointer Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: fix sparse warningsHarvey Harrison2008-04-235-13/+15
| | | | | | | | | | | | | | | | | | | | | | Add extern to nfsd/nfsd.h fs/nfsd/nfssvc.c:146:5: warning: symbol 'nfsd_nrthreads' was not declared. Should it be static? fs/nfsd/nfssvc.c:261:5: warning: symbol 'nfsd_nrpools' was not declared. Should it be static? fs/nfsd/nfssvc.c:269:5: warning: symbol 'nfsd_get_nrthreads' was not declared. Should it be static? fs/nfsd/nfssvc.c:281:5: warning: symbol 'nfsd_set_nrthreads' was not declared. Should it be static? fs/nfsd/export.c:1534:23: warning: symbol 'nfs_exports_op' was not declared. Should it be static? Add include of auth.h fs/nfsd/auth.c:27:5: warning: symbol 'nfsd_setuser' was not declared. Should it be static? Make static, move forward declaration closer to where it's needed. fs/nfsd/nfs4state.c:1877:1: warning: symbol 'laundromat_main' was not declared. Should it be static? Make static, forward declaration was already marked static. fs/nfsd/nfs4idmap.c:206:1: warning: symbol 'idtoname_parse' was not declared. Should it be static? fs/nfsd/vfs.c:1156:1: warning: symbol 'nfsd_create_setattr' was not declared. Should it be static? Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* lockd: convert nsm_mutex to a spinlockJ. Bruce Fields2008-04-231-15/+19
| | | | | | | | | There's no reason for a mutex here, except to allow an allocation under the lock, which we can avoid with the usual trick of preallocating memory for the new object and freeing it if it turns out to be unnecessary. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* lockd: clean up __nsm_find()J. Bruce Fields2008-04-231-16/+16
| | | | | | | | Use list_for_each_entry(). Also, in keeping with kernel style, make the normal case (kzalloc succeeds) unindented and handle the abnormal case with a goto. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* lockd: fix race in nlm_release()J. Bruce Fields2008-04-231-6/+4
| | | | | | | | | | | | The sm_count is decremented to zero but left on the nsm_handles list. So in the space between decrementing sm_count and acquiring nsm_mutex, it is possible for another task to find this nsm_handle, increment the use count and then enter nsm_release itself. Thus there's nothing to prevent the nsm being freed before we acquire nsm_mutex here. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* sunrpc: GSS integrity and decryption failures should return GARBAGE_ARGSHarshula Jayasuriya2008-04-232-4/+8
| | | | | | | | | | | In function svcauth_gss_accept() (net/sunrpc/auth_gss/svcauth_gss.c) the code that handles GSS integrity and decryption failures should be returning GARBAGE_ARGS as specified in RFC 2203, sections 5.3.3.4.2 and 5.3.3.4.3. Reviewed-by: Greg Banks <gnb@sgi.com> Signed-off-by: Harshula Jayasuriya <harshula@sgi.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* lockd: fix sparse warning in svcshare.cHarvey Harrison2008-04-231-1/+2
| | | | | | | | | fs/lockd/svcshare.c:74:50: warning: Using plain integer as NULL pointer Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* make nfsd_create_setattr() staticAdrian Bunk2008-04-231-1/+1
| | | | | | | This patch makes the needlessly global nfsd_create_setattr() static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* SUNRPC: allow svc_recv to break out of 500ms sleep when alloc_page failsJeff Layton2008-04-231-3/+5
| | | | | | | | | | | | | | | | svc_recv() calls alloc_page(), and if it fails it does a 500ms uninterruptible sleep and then reattempts. There doesn't seem to be any real reason for this to be uninterruptible, so change it to an interruptible sleep. Also check for kthread_stop() and signalled() after setting the task state to avoid races that might lead to sleeping after kthread_stop() wakes up the task. I've done some very basic smoke testing with this, but obviously it's hard to test the actual changes since this all depends on an alloc_page() call failing. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* NFSD: Remove redundant "select" clauses in fs/KconfigChuck Lever2008-04-231-2/+0
| | | | | | | | | | | | | As far as I can tell, selecting the CRYPTO and CRYPTO_MD5 entries under CONFIG_NFSD is redundant, since CONFIG_NFSD_V4 already selects RPCSEC_GSS_KRB5, which selects these entries. Testing with "make menuconfig" shows that the entries under CRYPTO still properly reflect "Y" or "M" based on the setting of CONFIG_NFSD after this change is applied. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* NFSD: Move "select NFSD_V2_ACL if NFSD_V3_ACL"Chuck Lever2008-04-231-1/+1
| | | | | | | | Clean up: since NFSD_V2_ACL is a boolean, it can be selected safely under the NFSD_V3_ACL entry (also a boolean). Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* NFSD: Move "select FS_POSIX_ACL if NFSD_V4"Chuck Lever2008-04-231-2/+2
| | | | | | | | Clean up: since FS_POSIX_ACL is a non-visible boolean entry, it can be selected safely under the NFSD_V4 entry (also a boolean). Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* NFSD: Update help text for CONFIG_NFSDChuck Lever2008-04-231-29/+47
| | | | | | | | | Clean up: refresh the help text for Kconfig items related to the NFS server. Remove obsolete URLs, and make the language consistent among the options. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* NFSD: Remove NFSD_TCP kernel build optionChuck Lever2008-04-232-12/+0
| | | | | | | | | | | Likewise, distros usually leave CONFIG_NFSD_TCP enabled. TCP support in the Linux NFS server is stable enough that we can leave it on always. CONFIG_NFSD_TCP adds about 10 lines of code, and defaults to "Y" anyway. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: clarify readdir/mountpoint-crossing codeJ. Bruce Fields2008-04-231-3/+10
| | | | | | | | | | | | The code here is difficult to understand; attempt to clarify somewhat by pulling out one of the more mystifying conditionals into a separate function. While we're here, also add lease_time to the list of attributes that we don't really need to cross a mountpoint to fetch. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Cc: Peter Staubach <staubach@redhat.com>
* svcrpc: move unused field from cache_deferred_reqJ. Bruce Fields2008-04-232-2/+0
| | | | | | | This field is set once and never used; probably some artifact of an earlier implementation idea. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd4: kill unnecessary check in preprocess_stateid_opJ. Bruce Fields2008-04-231-1/+1
| | | | | | This condition is always true. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd4: simplify stateid sequencing checksJ. Bruce Fields2008-04-231-15/+26
| | | | | | Pull this common code into a separate function. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd4: remove unnecessary CHECK_FH check in preprocess_seqid_opJ. Bruce Fields2008-04-231-7/+7
| | | | | | Every caller sets this flag, so it's meaningless. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfs: remove unnecessary NFS_NEED_* definesJ. Bruce Fields2008-04-232-2/+1
| | | | | | | | | Thanks to Robert Day for pointing out that these two defines are unused. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Cc: Trond Myklebust <trond@netapp.com>Trond Myklebust <trond@netapp.com> Cc: Neil Brown <neilb@suse.de> Cc: "Robert P. J. Day" <rpjday@crashcourse.ca>
* IPv6 support for NFS server export cachesAurélien Charbon2008-04-235-45/+111
| | | | | | | | | | | | | | | This adds IPv6 support to the interfaces that are used to express nfsd exports. All addressed are stored internally as IPv6; backwards compatibility is maintained using mapped addresses. Thanks to Bruce Fields, Brian Haley, Neil Brown and Hideaki Joshifuji for comments Signed-off-by: Aurelien Charbon <aurelien.charbon@bull.net> Cc: Neil Brown <neilb@suse.de> Cc: Brian Haley <brian.haley@hp.com> Cc: YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* NLM: Convert lockd to use kthreadsJeff Layton2008-04-232-75/+60
| | | | | | | | | | | | | | | Have lockd_up start lockd using kthread_run. With this change, lockd_down now blocks until lockd actually exits, so there's no longer need for the waitqueue code at the end of lockd_down. This also means that only one lockd can be running at a time which simplifies the code within lockd's main loop. This also adds a check for kthread_should_stop in the main loop of nlmsvc_retry_blocked and after that function returns. There's no sense continuing to retry blocks if lockd is coming down anyway. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* SUNRPC: have svc_recv() check kthread_should_stop()Jeff Layton2008-04-231-2/+22
| | | | | | | | | | | | | | | | | | | When using kthreads that call into svc_recv, we want to make sure that they do not block there for a long time when we're trying to take down the kthread. This patch changes svc_recv() to check kthread_should_stop() at the same places that it checks to see if it's signalled(). Also check just before svc_recv() tries to schedule(). By making sure that we check it just after setting the task state we can avoid having to use any locking or signalling to ensure it doesn't block for a long time. There's still a chance of a 500ms sleep if alloc_page() fails, but that should be a rare occurrence and isn't a terribly long time in the context of a kthread being taken down. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* SUNRPC: export svc_sock_update_bufsJeff Layton2008-04-231-0/+1
| | | | | | | | | Needed since the plan is to not have a svc_create_thread helper and to have current users of that function just call kthread_run directly. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* knfsd: Remove NLM_HOST_MAX and associated logic.NeilBrown2008-04-231-6/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Lockd caches information about hosts that have recently held locks to expedite the taking of further locks. It periodically discards this information for hosts that have not been used for a few minutes. lockd currently has a value NLM_HOST_MAX, and changes the 'garbage collection' behaviour when the number of hosts exceeds this threshold. However its behaviour is strange, and likely not what was intended. When the number of hosts exceeds the max, it scans *less* often (every 2 minutes vs every minute) and allows unused host information to remain around longer (5 minutes instead of 2). Having this limit is of dubious value anyway, and we have not suffered from the code not getting the limit right, so remove the limit altogether. We go with the larger values (discard 5 minute old hosts every 2 minutes) as they are probably safer. Maybe the periodic garbage collection should be replace to with 'shrinker' handler so we just respond to memory pressure.... Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* slab_err: Pass parameters correctly to slab_bugChristoph Lameter2008-04-231-2/+2
| | | | | Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2008-04-2312-138/+573
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: [patch 7/7] vfs: mountinfo: show dominating group id [patch 6/7] vfs: mountinfo: add /proc/<pid>/mountinfo [patch 5/7] vfs: mountinfo: allow using process root [patch 4/7] vfs: mountinfo: add mount peer group ID [patch 3/7] vfs: mountinfo: add mount ID [patch 2/7] vfs: mountinfo: add seq_file_root() [patch 1/7] vfs: mountinfo: add dentry_path() [PATCH] remove unused label in xattr.c (noise from ro-bind)
| * [patch 7/7] vfs: mountinfo: show dominating group idMiklos Szeredi2008-04-234-2/+65
| | | | | | | | | | | | | | | | Show peer group ID of nearest dominating group that has intersection with the mount's namespace. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [patch 6/7] vfs: mountinfo: add /proc/<pid>/mountinfoRam Pai2008-04-234-23/+144
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [mszeredi@suse.cz] rewrite and split big patch into managable chunks /proc/mounts in its current form lacks important information: - propagation state - root of mount for bind mounts - the st_dev value used within the filesystem - identifier for each mount and it's parent It also suffers from the following problems: - not easily extendable - ambiguity of mountpoints within a chrooted environment - doesn't distinguish between filesystem dependent and independent options - doesn't distinguish between per mount and per super block options This patch introduces /proc/<pid>/mountinfo which attempts to address all these deficiencies. Code shared between /proc/<pid>/mounts and /proc/<pid>/mountinfo is extracted into separate functions. Thanks to Al Viro for the help in getting the design right. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [patch 5/7] vfs: mountinfo: allow using process rootMiklos Szeredi2008-04-233-63/+70
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow /proc/<pid>/mountinfo to use the root of <pid> to calculate mountpoints. - move definition of 'struct proc_mounts' to <linux/mnt_namespace.h> - add the process's namespace and root to this structure - pass a pointer to 'struct proc_mounts' into seq_operations In addition the following cleanups are made: - use a common open function for /proc/<pid>/{mounts,mountstat} - surround namespace.c part of these proc files with #ifdef CONFIG_PROC_FS - make the seq_operations structures const Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [patch 4/7] vfs: mountinfo: add mount peer group IDMiklos Szeredi2008-04-233-4/+95
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a unique ID to each peer group using the IDR infrastructure. The identifiers are reused after the peer group dissolves. The IDR structures are protected by holding namepspace_sem for write while allocating or deallocating IDs. IDs are allocated when a previously unshared vfsmount becomes the first member of a peer group. When a new member is added to an existing group, the ID is copied from one of the old members. IDs are freed when the last member of a peer group is unshared. Setting the MNT_SHARED flag on members of a subtree is done as a separate step, after all the IDs have been allocated. This way an allocation failure can be cleaned up easilty, without affecting the propagation state. Based on design sketch by Al Viro. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [patch 3/7] vfs: mountinfo: add mount IDMiklos Szeredi2008-04-232-0/+35
| | | | | | | | | | | | | | | | Add a unique ID to each vfsmount using the IDR infrastructure. The identifiers are reused after the vfsmount is freed. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [patch 2/7] vfs: mountinfo: add seq_file_root()Miklos Szeredi2008-04-234-8/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | Add a new function: seq_file_root() This is similar to seq_path(), but calculates the path relative to the given root, instead of current->fs->root. If the path was unreachable from root, then modify the root parameter to reflect this. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [patch 1/7] vfs: mountinfo: add dentry_path()Ram Pai2008-04-234-40/+118
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [mszeredi@suse.cz] split big patch into managable chunks Add the following functions: dentry_path() seq_dentry() These are similar to d_path() and seq_path(). But instead of calculating the path within a mount namespace, they calculate the path from the root of the filesystem to a given dentry, ignoring mounts completely. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [PATCH] remove unused label in xattr.c (noise from ro-bind)Al Viro2008-04-231-1/+0
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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