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* pnfs: use lwb as layoutcommit lengthPeng Tao2011-08-041-1/+1
| | | | | | | | | | | | | commit 3557c6c3be5b2ca0b11365db7f8a813253eb520b upstream. Using NFS4_MAX_UINT64 will break current protocol. [Needed in v3.0] Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* pnfs: let layoutcommit handle a list of lsegPeng Tao2011-08-043-17/+25
| | | | | | | | | | | | | | | commit a9bae5666d0510ad69bdb437371c9a3e6b770705 upstream. There can be multiple lseg per file, so layoutcommit should be able to handle it. [Needed in v3.0] Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* pnfs: save layoutcommit cred at layout header initPeng Tao2011-08-042-11/+12
| | | | | | | | | | | | | | | commit 9fa4075878a5faac872a63f4a97ce79c776264e9 upstream. No need to save it for every lseg. No need to save it at every pnfs_set_layoutcommit. [Needed in v3.0] Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* pnfs: save layoutcommit lwb at layout headerPeng Tao2011-08-043-6/+8
| | | | | | | | | | | | | commit acff5880539fe33897d016c0f3dcf062e67c61b6 upstream. No need to save it for every lseg. [Needed in v3.0] Signed-off-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Jim Rees <rees@umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* CIFS: Fix oops while mounting with prefixpathPavel Shilovsky2011-08-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | commit f5bc1e755d23d022bf948904386337fc3e5e29a8 upstream. commit fec11dd9a0109fe52fd631e5c510778d6cbff6cc caused a regression when we have already mounted //server/share/a and want to mount //server/share/a/b. The problem is that lookup_one_len calls __lookup_hash with nd pointer as NULL. Then __lookup_hash calls do_revalidate in the case when dentry exists and we end up with NULL pointer deference in cifs_d_revalidate: if (nd->flags & LOOKUP_RCU) return -ECHILD; Fix this by checking nd for NULL. Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Reviewed-by: Shirish Pargaonkar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds2011-07-211-1/+1
|\ | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: CIFS: Fix wrong length in cifs_iovec_read
| * CIFS: Fix wrong length in cifs_iovec_readPavel Shilovsky2011-07-211-1/+1
| | | | | | | | | | | | Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* | vfs: drop conditional inode prefetch in __do_lookup_rcuLinus Torvalds2011-07-211-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | It seems to hurt performance in real life. Yes, the inode will be used later, but the conditional doesn't seem to predict all that well (negative dentries are not uncommon) and it looks like the cost of prefetching is simply higher than depending on the cache doing the right thing. As usual. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | FS-Cache: Fix __fscache_uncache_all_inode_pages()'s outer loopJan Beulich2011-07-211-9/+5
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | The compiler, at least for ix86 and m68k, validly warns that the comparison: next <= (loff_t)-1 is always true (and it's always true also for x86-64 and probably all other arches - as long as pgoff_t isn't wider than loff_t). The intention appears to be to avoid wrapping of "next", so rather than eliminating the pointless comparison, fix the loop to indeed get exited when "next" would otherwise wrap. On m68k the following warning is observed: fs/fscache/page.c: In function '__fscache_uncache_all_inode_pages': fs/fscache/page.c:979: warning: comparison is always false due to limited range of data type Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Reported-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: David Howells <dhowells@redhat.com> Cc: Suresh Jayaraman <sjayaraman@suse.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/libfs.c: fix simple_attr_write() on 32bit machinesAkinobu Mita2011-07-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | Assume that /sys/kernel/debug/dummy64 is debugfs file created by debugfs_create_x64(). # cd /sys/kernel/debug # echo 0x1234567812345678 > dummy64 # cat dummy64 0x0000000012345678 # echo 0x80000000 > dummy64 # cat dummy64 0xffffffff80000000 A value larger than INT_MAX cannot be written to the debugfs file created by debugfs_create_u64 or debugfs_create_x64 on 32bit machine. Because simple_attr_write() uses simple_strtol() for the conversion. To fix this, use simple_strtoll() instead. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2011-07-192-72/+35
|\ | | | | | | | | | | | | | | | | | | | | 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: vfs: fix race in rcu lookup of pruned dentry Fix cifs_get_root() [ Edited the last commit to get rid of a 'unused variable "seq"' warning due to Al editing the patch. - Linus ]
| * vfs: fix race in rcu lookup of pruned dentryLinus Torvalds2011-07-191-1/+6
| | | | | | | | | | | | | | | | | | | | Don't update *inode in __follow_mount_rcu() until we'd verified that there is mountpoint there. Kudos to Hugh Dickins for catching that one in the first place and eventually figuring out the solution (and catching a braino in the earlier version of patch). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * Fix cifs_get_root()Al Viro2011-07-181-71/+29
| | | | | | | | | | | | | | | | | | | | Add missing ->i_mutex, convert to lookup_one_len() instead of (broken) open-coded analog, cope with getting something like a//b as relative pathname. Simplify the hell out of it, while we are there... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Reviewed-by: Jeff Layton <jlayton@redhat.com>
* | Merge branch 'for-linus' of ↵Linus Torvalds2011-07-186-45/+54
|\ \ | |/ | | | | | | | | | | | | | | | | | | | | | | 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: hppfs_lookup(): don't open-code lookup_one_len() hppfs: fix dentry leak cramfs: get_cramfs_inode() returns ERR_PTR() on failure ufs should use d_splice_alias() fix exofs ->get_parent() ceph analog of cifs build_path_from_dentry() race fix cifs: build_path_from_dentry() race fix
| * hppfs_lookup(): don't open-code lookup_one_len()Al Viro2011-07-171-16/+3
| | | | | | | | | | | | | | ... and it's getting it wrong, too - missing ->d_revalidate() calls when it's dealing with filesystem (procfs) that has non-trivial ->d_revalidate()... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * hppfs: fix dentry leakAl Viro2011-07-171-6/+6
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * cramfs: get_cramfs_inode() returns ERR_PTR() on failureAl Viro2011-07-171-10/+12
| | | | | | | | | | | | ... and we want to report these failures in ->lookup() anyway. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * ufs should use d_splice_alias()Al Viro2011-07-171-8/+4
| | | | | | | | | | | | it's NFS-exportable, so... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * fix exofs ->get_parent()Al Viro2011-07-171-1/+1
| | | | | | | | | | | | NULL is not a possible return value for that method, TYVM... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * ceph analog of cifs build_path_from_dentry() race fixAl Viro2011-07-161-3/+16
| | | | | | | | | | | | ... unfortunately, cifs bug got copied. Fix is essentially the same. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * cifs: build_path_from_dentry() race fixAl Viro2011-07-161-1/+12
| | | | | | | | | | | | | | | | | | deal with d_move() races properly; rename_lock read-retry loop, rcu_read_lock() held while walking to root, d_lock held over subtraction from namelen and copying the component to stabilize ->d_name. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds2011-07-173-7/+7
|\ \ | |/ |/| | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: [CIFS] update cifs to version 1.74 [CIFS] update limit for snprintf in cifs_construct_tcon cifs: Fix signing failure when server mandates signing for NTLMSSP
| * [CIFS] update cifs to version 1.74Steve French2011-07-121-1/+1
| | | | | | | | Signed-off-by: Steve French <sfrench@us.ibm.com>
| * [CIFS] update limit for snprintf in cifs_construct_tconSteve French2011-07-121-1/+1
| | | | | | | | | | | | | | | | | | | | In 34c87901e113 "Shrink stack space usage in cifs_construct_tcon" we change the size of the username name buffer from MAX_USERNAME_SIZE (256) to 28. This call to snprintf() needs to be updated as well. Reported by Dan Carpenter. Reviewed-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * cifs: Fix signing failure when server mandates signing for NTLMSSPShirish Pargaonkar2011-07-121-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When using NTLMSSP authentication mechanism, if server mandates signing, keep the flags in type 3 messages of the NTLMSSP exchange same as in type 1 messages (i.e. keep the indicated capabilities same). Some of the servers such as Samba, expect the flags such as Negotiate_Key_Exchange in type 3 message of NTLMSSP exchange as well. Some servers like Windows do not. https://bugzilla.samba.org/show_bug.cgi?id=8212 Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail> Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* | Merge branch 'for-linus' of ↵Linus Torvalds2011-07-152-17/+36
|\ \ | | | | | | | | | | | | | | | | | | | | | 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: fix loop checks in d_materialise_unique() Fix ->d_lock locking order in unlazy_walk()
| * | fix loop checks in d_materialise_unique()Al Viro2011-07-141-17/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Both __d_unalias() and __d_materialise_dentry() need loop prevention. Grab rename_lock in caller, check for loops there... As a side benefit, we have dentry_lock_for_move() called only under rename_lock, which seriously reduces deadlock potential of the execrable "locking order" used for ->d_lock. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | Fix ->d_lock locking order in unlazy_walk()Al Viro2011-07-121-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | Make sure that child is still a child of parent before nested locking of child->d_lock in unlazy_walk(); otherwise we are risking a violation of locking order and deadlocks. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixesLinus Torvalds2011-07-147-10/+50
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes: GFS2: Resolve inode eviction and ail list interaction bug GFS2: Fix race during filesystem mount GFS2: force a log flush when invalidating the rindex glock
| * | | GFS2: Resolve inode eviction and ail list interaction bugSteven Whitehouse2011-07-144-8/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch contains a few misc fixes which resolve a recently reported issue. This patch has been a real team effort and has received a lot of testing. The first issue is that the ail lock needs to be held over a few more operations. The lock thats added into gfs2_releasepage() may possibly be a candidate for replacing with RCU at some future point, but at this stage we've gone for the obvious fix. The second issue is that gfs2_write_inode() can end up calling a glock recursively when called from gfs2_evict_inode() via the syncing code, so it needs a guard added. The third issue is that we either need to not truncate the metadata pages of inodes which have zero link count, but which we cannot deallocate due to them still being in use by other nodes, or we need to ensure that those pages have all made it through the journal and ail lists first. This patch takes the former approach, but the latter has also been tested and there is nothing to choose between them performance-wise. So again, we could revise that decision in the future. Also, the inode eviction process is now better documented. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Tested-by: Bob Peterson <rpeterso@redhat.com> Tested-by: Abhijith Das <adas@redhat.com> Reported-by: Barry J. Marson <bmarson@redhat.com> Reported-by: David Teigland <teigland@redhat.com>
| * | | GFS2: Fix race during filesystem mountSteven Whitehouse2011-07-123-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a potential race during filesystem mounting which has recently been reported. It occurs when the userland gfs_controld is able to process requests fast enough that it tries to use the sysfs interface before the lock module is properly initialised. This is a pretty unusual case as normally the lock module initialisation is very quick compared with gfs_controld. This patch adds an interruptible completion which is used to ensure that userland will wait for the initialisation of the lock module to complete. There are other potential solutions to this problem, but this is the quickest at this stage and has been tested both with and without mount.gfs2 present in the system. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Reported-by: David Booher <dbooher@adams.net>
| * | | GFS2: force a log flush when invalidating the rindex glockBenjamin Marzinski2011-07-121-1/+3
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Right now, there is nothing that forces the log to get flushed when a node drops its rindex glock so that another node can grow the filesystem. If the log doesn't get flushed, GFS2 can corrupt the sd_log_le_rg list in the following way. A node puts an rgd on the list in rg_lo_add(), and then the rindex glock is dropped so the other node can grow the filesystem. When the node reacquires the rindex glock, that rgd gets deleted in clear_rgrpdi() before ever being removed from the list by gfs2_log_flush(). This code simply forces a log flush when the rindex glock is invalidated, solving the problem. Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
* | | Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds2011-07-133-2/+3
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | * 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: SUNRPC: Fix use of static variable in rpcb_getport_async NFSv4.1: update nfs4_fattr_bitmap_maxsz SUNRPC: Fix a race between work-queue and rpc_killall_tasks pnfs: write: Set mds_offset in the generic layer - it is needed by all LDs
| * | NFSv4.1: update nfs4_fattr_bitmap_maxszAndy Adamson2011-07-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Attribute IDs assigned in RFC 5661 now require three bitmaps. Fixes hitting a BUG_ON in xdr_shrink_bufhead when getting ACLs. Signed-off-by: Andy Adamson <andros@netapp.com> Cc:stable@kernel.org [2.6.39] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | pnfs: write: Set mds_offset in the generic layer - it is needed by all LDsBoaz Harrosh2011-06-282-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In current pnfs tree, all the layouts set mds_offset in their .write_pagelist member. mds_offset is only used by generic layer and should be handled by it. This patch is for upstream. It is needed in this -rc series to fix a bug in objects layout_commit. I'll send patches for objects and blocks to be squashed into current pnfs tree. TODO: It looks like the read path needs the same patch. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds2011-07-113-57/+73
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: cifs: drop spinlock before calling cifs_put_tlink cifs: fix expand_dfs_referral cifs: move bdi_setup_and_register outside of CONFIG_CIFS_DFS_UPCALL cifs: factor smb_vol allocation out of cifs_setup_volume_info cifs: have cifs_cleanup_volume_info not take a double pointer cifs: fix build_unc_path_to_root to account for a prefixpath cifs: remove bogus call to cifs_cleanup_volume_info
| * | | cifs: drop spinlock before calling cifs_put_tlinkJeff Layton2011-07-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | ...as that function can sleep. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | | cifs: fix expand_dfs_referralJeff Layton2011-07-091-10/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Regression introduced in commit 724d9f1cfba. Prior to that, expand_dfs_referral would regenerate the mount data string and then call cifs_parse_mount_options to re-parse it (klunky, but it worked). The above commit moved cifs_parse_mount_options out of cifs_mount, so the re-parsing of the new mount options no longer occurred. Fix it by making expand_dfs_referral re-parse the mount options. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | | cifs: move bdi_setup_and_register outside of CONFIG_CIFS_DFS_UPCALLJeff Layton2011-07-091-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This needs to be done regardless of whether that KConfig option is set or not. Reported-by: Sven-Haegar Koch <haegar@sdinet.de> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | | cifs: factor smb_vol allocation out of cifs_setup_volume_infoJeff Layton2011-07-083-33/+33
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | | cifs: have cifs_cleanup_volume_info not take a double pointerJeff Layton2011-07-063-9/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ...as that makes for a cumbersome interface. Make it take a regular smb_vol pointer and rely on the caller to zero it out if needed. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | | cifs: fix build_unc_path_to_root to account for a prefixpathJeff Layton2011-07-061-6/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Regression introduced by commit f87d39d9513. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | | cifs: remove bogus call to cifs_cleanup_volume_infoJeff Layton2011-07-061-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This call to cifs_cleanup_volume_info is clearly wrong. As soon as it's called the following call to cifs_get_tcp_session will oops as the volume_info pointer will then be NULL. The caller of cifs_mount should clean up this data since it passed it in. There's no need for us to call this here. Regression introduced by commit 724d9f1cfba. Reported-by: Adam Williamson <awilliam@redhat.com> Cc: Pavel Shilovsky <piastryyy@gmail.com> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* | | | Merge branch 'for-linus' of ↵Linus Torvalds2011-07-084-6/+20
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: btrfs: fix oops when doing space balance Btrfs: don't panic if we get an error while balancing V2 btrfs: add missing options displayed in mount output
| * | | | btrfs: fix oops when doing space balanceMiao Xie2011-07-061-5/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need to make sure the data relocation inode doesn't go through the delayed metadata updates, otherwise we get an oops during balance: kernel BUG at fs/btrfs/relocation.c:4303! [SNIP] Call Trace: [<ffffffffa03143fd>] ? update_ref_for_cow+0x22d/0x330 [btrfs] [<ffffffffa0314951>] __btrfs_cow_block+0x451/0x5e0 [btrfs] [<ffffffffa031355d>] ? read_block_for_search+0x14d/0x4d0 [btrfs] [<ffffffffa0314beb>] btrfs_cow_block+0x10b/0x240 [btrfs] [<ffffffffa031acae>] btrfs_search_slot+0x49e/0x7a0 [btrfs] [<ffffffffa032d8af>] btrfs_lookup_inode+0x2f/0xa0 [btrfs] [<ffffffff8147bf0e>] ? mutex_lock+0x1e/0x50 [<ffffffffa0380cf1>] btrfs_update_delayed_inode+0x71/0x160 [btrfs] [<ffffffffa037ff27>] ? __btrfs_release_delayed_node+0x67/0x190 [btrfs] [<ffffffffa0381cf8>] btrfs_run_delayed_items+0xe8/0x120 [btrfs] [<ffffffffa03365e0>] btrfs_commit_transaction+0x250/0x850 [btrfs] [<ffffffff810f91d9>] ? find_get_pages+0x39/0x130 [<ffffffffa0336cd5>] ? join_transaction+0x25/0x250 [btrfs] [<ffffffff81081de0>] ? wake_up_bit+0x40/0x40 [<ffffffffa03785fa>] prepare_to_relocate+0xda/0xf0 [btrfs] [<ffffffffa037f2bb>] relocate_block_group+0x4b/0x620 [btrfs] [<ffffffffa0334cf5>] ? btrfs_clean_old_snapshots+0x35/0x150 [btrfs] [<ffffffffa037fa43>] btrfs_relocate_block_group+0x1b3/0x2e0 [btrfs] [<ffffffffa0368ec0>] ? btrfs_tree_unlock+0x50/0x50 [btrfs] [<ffffffffa035e39b>] btrfs_relocate_chunk+0x8b/0x670 [btrfs] [<ffffffffa031303d>] ? btrfs_set_path_blocking+0x3d/0x50 [btrfs] [<ffffffffa03577d8>] ? read_extent_buffer+0xd8/0x1d0 [btrfs] [<ffffffffa031bea1>] ? btrfs_previous_item+0xb1/0x150 [btrfs] [<ffffffffa03577d8>] ? read_extent_buffer+0xd8/0x1d0 [btrfs] [<ffffffffa035f5aa>] btrfs_balance+0x21a/0x2b0 [btrfs] [<ffffffffa0368898>] btrfs_ioctl+0x798/0xd20 [btrfs] [<ffffffff8111e358>] ? handle_mm_fault+0x148/0x270 [<ffffffff814809e8>] ? do_page_fault+0x1d8/0x4b0 [<ffffffff81160d6a>] do_vfs_ioctl+0x9a/0x540 [<ffffffff811612b1>] sys_ioctl+0xa1/0xb0 [<ffffffff81484ec2>] system_call_fastpath+0x16/0x1b [SNIP] RIP [<ffffffffa037c1cc>] btrfs_reloc_cow_block+0x22c/0x270 [btrfs] Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * | | | Btrfs: don't panic if we get an error while balancing V2Josef Bacik2011-07-061-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A user reported an error where if we try to balance an fs after a device has been removed it will blow up. This is because we get an EIO back and this is where BUG_ON(ret) bites us in the ass. To fix we just exit. Thanks, Reported-by: Anand Jain <Anand.Jain@oracle.com> Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
| * | | | btrfs: add missing options displayed in mount outputDavid Sterba2011-07-062-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are three missed mount options settable by user which are not currently displayed in mount output. Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <chris.mason@oracle.com>
* | | | | Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfsLinus Torvalds2011-07-082-8/+10
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://oss.sgi.com/xfs/xfs: xfs: unpin stale inodes directly in IOP_COMMITTED
| * | | | | xfs: unpin stale inodes directly in IOP_COMMITTEDDave Chinner2011-07-062-8/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When inodes are marked stale in a transaction, they are treated specially when the inode log item is being inserted into the AIL. It tries to avoid moving the log item forward in the AIL due to a race condition with the writing the underlying buffer back to disk. The was "fixed" in commit de25c18 ("xfs: avoid moving stale inodes in the AIL"). To avoid moving the item forward, we return a LSN smaller than the commit_lsn of the completing transaction, thereby trying to trick the commit code into not moving the inode forward at all. I'm not sure this ever worked as intended - it assumes the inode is already in the AIL, but I don't think the returned LSN would have been small enough to prevent moving the inode. It appears that the reason it worked is that the lower LSN of the inodes meant they were inserted into the AIL and flushed before the inode buffer (which was moved to the commit_lsn of the transaction). The big problem is that with delayed logging, the returning of the different LSN means insertion takes the slow, non-bulk path. Worse yet is that insertion is to a position -before- the commit_lsn so it is doing a AIL traversal on every insertion, and has to walk over all the items that have already been inserted into the AIL. It's expensive. To compound the matter further, with delayed logging inodes are likely to go from clean to stale in a single checkpoint, which means they aren't even in the AIL at all when we come across them at AIL insertion time. Hence these were all getting inserted into the AIL when they simply do not need to be as inodes marked XFS_ISTALE are never written back. Transactional/recovery integrity is maintained in this case by the other items in the unlink transaction that were modified (e.g. the AGI btree blocks) and committed in the same checkpoint. So to fix this, simply unpin the stale inodes directly in xfs_inode_item_committed() and return -1 to indicate that the AIL insertion code does not need to do any further processing of these inodes. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
* | | | | | FS-Cache: Add a helper to bulk uncache pages on an inodeDavid Howells2011-07-073-5/+48
| |_|/ / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add an FS-Cache helper to bulk uncache pages on an inode. This will only work for the circumstance where the pages in the cache correspond 1:1 with the pages attached to an inode's page cache. This is required for CIFS and NFS: When disabling inode cookie, we were returning the cookie and setting cifsi->fscache to NULL but failed to invalidate any previously mapped pages. This resulted in "Bad page state" errors and manifested in other kind of errors when running fsstress. Fix it by uncaching mapped pages when we disable the inode cookie. This patch should fix the following oops and "Bad page state" errors seen during fsstress testing. ------------[ cut here ]------------ kernel BUG at fs/cachefiles/namei.c:201! invalid opcode: 0000 [#1] SMP Pid: 5, comm: kworker/u:0 Not tainted 2.6.38.7-30.fc15.x86_64 #1 Bochs Bochs RIP: 0010: cachefiles_walk_to_object+0x436/0x745 [cachefiles] RSP: 0018:ffff88002ce6dd00 EFLAGS: 00010282 RAX: ffff88002ef165f0 RBX: ffff88001811f500 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000282 RBP: ffff88002ce6dda0 R08: 0000000000000100 R09: ffffffff81b3a300 R10: 0000ffff00066c0a R11: 0000000000000003 R12: ffff88002ae54840 R13: ffff88002ae54840 R14: ffff880029c29c00 R15: ffff88001811f4b0 FS: 00007f394dd32720(0000) GS:ffff88002ef00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00007fffcb62ddf8 CR3: 000000001825f000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process kworker/u:0 (pid: 5, threadinfo ffff88002ce6c000, task ffff88002ce55cc0) Stack: 0000000000000246 ffff88002ce55cc0 ffff88002ce6dd58 ffff88001815dc00 ffff8800185246c0 ffff88001811f618 ffff880029c29d18 ffff88001811f380 ffff88002ce6dd50 ffffffff814757e4 ffff88002ce6dda0 ffffffff8106ac56 Call Trace: cachefiles_lookup_object+0x78/0xd4 [cachefiles] fscache_lookup_object+0x131/0x16d [fscache] fscache_object_work_func+0x1bc/0x669 [fscache] process_one_work+0x186/0x298 worker_thread+0xda/0x15d kthread+0x84/0x8c kernel_thread_helper+0x4/0x10 RIP cachefiles_walk_to_object+0x436/0x745 [cachefiles] ---[ end trace 1d481c9af1804caa ]--- I tested the uncaching by the following means: (1) Create a big file on my NFS server (104857600 bytes). (2) Read the file into the cache with md5sum on the NFS client. Look in /proc/fs/fscache/stats: Pages : mrk=25601 unc=0 (3) Open the file for read/write ("bash 5<>/warthog/bigfile"). Look in proc again: Pages : mrk=25601 unc=25601 Reported-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-and-Tested-by: Suresh Jayaraman <sjayaraman@suse.de> cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
generated by cgit v1.1 at 2024-12-28 05:04:17 +0000