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2010-02-13nilfs2: get rid of s_dirt flag useRyusuke Konishi
This replaces s_dirt flag use in nilfs with a new flag added on the nilfs object. The s_dirt flag was used to indicate if sop->write_super() should be called, however the current version of nilfs does not use the callback. Thus, it can be replaced with the own flag. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Cc: Jiro SEKIBA <jir@unicus.jp>
2010-02-13nilfs2: get rid of nilfs_segctor_req structRyusuke Konishi
This will clean up nilfs_segctor_req struct and the obscure request argument passed among private methods of segment constructor. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2010-02-13nilfs2: delete unnecessary condition in nilfs_dat_translateJiro SEKIBA
This is a trivial patch to delete unnecessary condition in nilfs_dat_translate. nilfs_dat_translate() will asign translated address to *blocknrp if blocknrp is not NULL. However the condition is unneeded, because all callers of nilfs_dat_translate() pass blocknrp properly. Signed-off-by: Jiro SEKIBA <jir@unicus.jp> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2010-02-13nilfs2: fix potential hang in nilfs_error on errors=remount-roRyusuke Konishi
nilfs_error() calls nilfs_detach_segment_constructor() if errors=remount-ro option is specified, and this may lead to a hang due to recursive locking of, for instance, nilfs->ns_segctor_sem and others. In this case, detaching segment constructor is not necessary because read-only flag is set to the filesystem and further writes are blocked. This fixes the potential hang issue by removing the nilfs_detach_segment_constructor() call from nilfs_error. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2010-02-13nilfs2: use mnt_want_write in ioctls where write access is neededRyusuke Konishi
A few nilfs2 ioctls need to ask for and then later release write access to the mount in order to avoid potential write to read-only mounts. This adds the missing mnt_want_write and mnt_drop_write in nilfs_ioctl_change_cpmode, nilfs_ioctl_delete_checkpoint, and nilfs_ioctl_clean_segments. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2010-02-13nilfs2: issue discard request after cleaning segmentsJiro SEKIBA
This adds a function to send discard requests for given array of segment numbers, and calls the function when garbage collection succeeded. Signed-off-by: Jiro SEKIBA <jir@unicus.jp> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2010-02-12Btrfs: btrfs_mark_extent_written uses the wrong slotShaohua Li
My test do: fallocate a big file and do write. The file is 512M, but after file write is done btrfs-debug-tree shows: item 6 key (257 EXTENT_DATA 0) itemoff 3516 itemsize 53 extent data disk byte 1103101952 nr 536870912 extent data offset 0 nr 399634432 ram 536870912 extent compression 0 Looks like a regression introducted by 6c7d54ac87f338c479d9729e8392eca3f76e11e1, where we set wrong slot. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Acked-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-02-12xfs: optimize log flushing in xfs_fsyncChristoph Hellwig
If we have a pinned inode it must have a log item attached to it. Usually that log item will have ili_last_lsn already set, in which case we only need to flush the log up to that LSN instead of doing a full log force. This gives speedups of about 5% in some fsync heavy workloads. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
2010-02-12xfs: only clear the suid bit once in xfs_writeChristoph Hellwig
file_remove_suid already calls into ->setattr to clear the suid and sgid bits if needed, no need to start a second transaction to do it ourselves. Note that xfs_write_clear_setuid issues a sync transaction while the path through ->setattr doesn't, but that is consistant with the other filesystems. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Alex Elder <aelder@sgi.com> Signed-off-by: Alex Elder <aelder@sgi.com>
2010-02-12GFS2: Fix bmap allocation corner-case bugSteven Whitehouse
This patch solves a corner case during allocation which occurs if both metadata (indirect) and data blocks are required but there is an obstacle in the filesystem (e.g. a resource group header or another allocated block) such that when the allocation is requested only enough blocks for the metadata are returned. By changing the exit condition of this loop, we ensure that a minimum of one data block will always be returned. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2010-02-12GFS2: Fix error codeAbhijith Das
We need this one-liner to signal the mount helper of the 'insufficient journals' condition. Signed-off-by: Abhijith Das <adas@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
2010-02-11Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds
* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: NFS: Fix the mapping of the NFSERR_SERVERFAULT error NFS: Remove a redundant check for PageFsCache in nfs_migrate_page() NFS: Fix a bug in nfs_fscache_release_page()
2010-02-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] qla2xxx: Obtain proper host structure during response-queue processing. [SCSI] compat_ioct: fix bsg SG_IO [SCSI] qla2xxx: make msix interrupt handler safe for irq [SCSI] zfcp: Report FC BSG errors in correct field [SCSI] mptfusion : mptscsih_abort return value should be SUCCESS instead of value 0.
2010-02-11fs/exec.c: restrict initial stack space expansion to rlimitMichael Neuling
When reserving stack space for a new process, make sure we're not attempting to expand the stack by more than rlimit allows. This fixes a bug caused by b6a2fea39318e43fee84fa7b0b90d68bed92d2ba ("mm: variable length argument support") and unmasked by fc63cf237078c86214abcb2ee9926d8ad289da9b ("exec: setup_arg_pages() fails to return errors"). This bug means that when limiting the stack to less the 20*PAGE_SIZE (eg. 80K on 4K pages or 'ulimit -s 79') all processes will be killed before they start. This is particularly bad with 64K pages, where a ulimit below 1280K will kill every process. To test, do: 'ulimit -s 15; ls' before and after the patch is applied. Before it's applied, 'ls' should be killed. After the patch is applied, 'ls' should no longer be killed. A stack limit of 15KB since it's small enough to trigger 20*PAGE_SIZE. Also 15KB not a multiple of PAGE_SIZE, which is a trickier case to handle correctly with this code. 4K pages should be fine to test with. [kosaki.motohiro@jp.fujitsu.com: cleanup] [akpm@linux-foundation.org: cleanup cleanup] Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Americo Wang <xiyou.wangcong@gmail.com> Cc: Anton Blanchard <anton@samba.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: James Morris <jmorris@namei.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Serge Hallyn <serue@us.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-02-11compat_ioctl: add compat handler for TIOCGSID ioctlAndreas Schwab
This is used by tcgetsid(3). Signed-off-by: Andreas Schwab <schwab@linux-m68k.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-02-11ceph: remove bogus invalidate_mapping_pagesSage Weil
We were invalidating mapping pages when dropping FILE_CACHE in __send_cap(). But ceph_check_caps attempts to invalidate already, and also checks for success, so we should never get to this point. Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-11ceph: invalidate pages even if truncate is pendingSage Weil
There is no reason not to invalidate pages when a truncate is pending. Both throw out page cache pages. Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-11ceph: cleanup async writeback, truncation, invalidate helpersSage Weil
Grab inode ref in helper. Make work functions static, with consistent naming. Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-11ceph: fix sync read eof check deadlockSage Weil
If a sync read gets a short result from the OSD, it may need to do a getattr to see if it is short due to reaching end-of-file. The getattr was being done while holding a reference to FILE_RD, which can lead to a deadlock if the MDS is revoking that capability bit and can't process the getattr until it does. We fix this by setting a flag if EOF size validation is needed, and doing the getattr in ceph_aio_read, after the RD cap ref is dropped. If the read needs to be continued, we loop and continue traversing the file. Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-11ceph: do not retain caps that are being revokedSage Weil
Never retain caps in __send_cap() that are being revoked. Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-11ceph: cap revocation fixesSage Weil
Try to invalidate pages in ceph_check_caps() if FILE_CACHE is being revoked. If we fail, queue an immediate async invalidate if FILE_CACHE is being revoked. (If it's not being revoked, we just queue the caps for later evaluation later, as per the old behavior.) Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-11ceph: sync read/write considers page cacheYehuda Sadeh
In the cases where we either do a sync read or a write, we need to make sure that everything in the page cache is flushed. In the case of a sync write we invalidate the relevant pages, so that subsequent read/write reflects the new data written. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-11ceph: fix truncation when not holding capsYehuda Sadeh
A truncation should occur when either we have the specified caps for the file, or (in cases where we are not the only ones referencing the file) when it is mapped or when it is opened. The latter two cases were not handled. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-11ceph: refactor ceph_write_begin, fix ceph_page_mkwriteYehuda Sadeh
Originally ceph_page_mkwrite called ceph_write_begin, hoping that the returned locked page would be the page that it was requested to mkwrite. Factored out relevant part of ceph_page_mkwrite and we lock the right page anyway. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-11ceph: fix short synchronous readsYehuda Sadeh
Zeroing of holes was not done correctly: page_off was miscalculated and zeroing the tail didn't not adjust the 'read' value to include the zeroed portion. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-11ceph: add uid field to ceph_pg_poolSage Weil
Also verify encoding version as we go. Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-11ceph: put unused osd connections on lruYehuda Sadeh
Instead of removing osd connection immediately when the requests list is empty, put the osd connection on an lru. Only if that osd has not been used for more than a specified time, will it be removed. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-11ceph: remove unused variableYehuda Sadeh
Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-11ceph: add support for auth_x authentication protocolSage Weil
The auth_x protocol implements support for a kerberos-like mutual authentication infrastructure used by Ceph. We do not simply use vanilla kerberos because of scalability and performance issues when dealing with a large cluster of nodes providing a single logical service. Auth_x provides mutual authentication of client and server and protects against replay and man in the middle attacks. It does not encrypt the full session over the wire, however, so data payload may still be snooped. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-10ceph: add struct version to auth encodingSage Weil
Inlucde struct version in encoding. This will streamline future protocol changes. Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-10ceph: allow renewal of auth credentialsSage Weil
Add infrastructure to allow the mon_client to periodically renew its auth credentials. Also add a messenger callback that will force such a renewal if a peer rejects our authenticator. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-10ceph: aes crypto and base64 encode/decode helpersSage Weil
Helpers to encrypt/decrypt AES and base64. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-10ceph: buffer decoding helpersSage Weil
Helper for decoding into a ceph_buffer, and other misc decoding helpers we will need. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
2010-02-10seq_file: Add helpers for iteration over a hlistLi Zefan
Some places in kernel need to iterate over a hlist in seq_file, so provide some common helpers. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-10compat_ioctl: ignore RAID_VERSION ioctlArnd Bergmann
md ioctls are now handled by the md driver itself, but mdadm may call RAID_VERSION on other devices as well. Mark the command as IGNORE_IOCTL so this fails silently rather than printing an annoying message. Reported-by: "Michael S. Tsirkin" <m.s.tsirkin@gmail.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-02-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: cifs: fix dentry hash calculation for case-insensitive mounts [CIFS] Don't cache timestamps on utimes due to coarse granularity [CIFS] Maximum username length check in session setup does not match cifs: fix length calculation for converted unicode readdir names [CIFS] Add support for TCP_NODELAY
2010-02-10fat: Fix stat->f_namelenKevin Dankwardt
I found that the length of a file name when created cannot exceed 255 characters, yet, pathconf(), via statfs(), returns the maximum as 260. Signed-off-by: Kevin Dankwardt <k@kcomputing.com> Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
2010-02-10NFS: Make close(2) asynchronous when closing NFS O_DIRECT filesChuck Lever
For NFSv2 and v3: O_DIRECT writes are always synchronous, and aren't cached, so nothing should be flushed when closing an NFS O_DIRECT file descriptor. Thus there are no write errors to report on close(2). In addition, there's no cached data to verify on the next open(2), so we don't need clean GETATTR results at close time to compare with. Thus, there's no need for the nfs_revalidate_inode() call when closing an NFS O_DIRECT file. This reduces the number of synchronous on-the-wire requests for a simple open-write-close of an NFS O_DIRECT file by roughly 20%. For NFSv4: Call nfs4_do_close() with wait set to zero when closing an NFS O_DIRECT file. The CLOSE will go on the wire, but the application won't wait for it to complete. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-02-10NFS: Improve NFS iostat byte count accuracy for writesChuck Lever
The bytes counted by the performance counters for NFS writes should reflect write and sync errors. If the write(2) system call reports an error, the bytes should not be counted. And, if the write is short, the actual number of bytes that was written should be counted, not the number of bytes that was requested. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-02-10NFS: Account for NFS bytes read via the splice APIChuck Lever
Bytes read via the splice API should be accounted for in the NFS performance statistics. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-02-10NFS: Fix byte accounting for generic NFS readsChuck Lever
Currently, the NFS I/O counters count the number of bytes requested by applications, rather than the number of bytes actually read by the system calls. The number of bytes requested for reads is actually not that useful, because the value is usually a buffer size for reads. That is, that requested number is usually a maximum, and frequently doesn't reflect the actual number of bytes read. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-02-10NFS: Proper accounting for NFS VFS callsChuck Lever
Nit: The VFSOPEN and VFSFLUSH counters are function call counters. Count every call to these routines. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-02-10nfs41: cleanup callback code to use __be32 typeAndy Adamson
Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-02-10nfs41: clear NFS4CLNT_RECALL_SLOT bit on session resetAndy Adamson
Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-02-10nfs41: fix nfs4_callback_recallslotAndy Adamson
Return NFS4_OK if target high slotid equals enforced high slotid. Fix nfs_client reference leak. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-02-10nfs41: resize slot table in resetAndy Adamson
When session is reset, client can renegotiate slot table size. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-02-10nfs41: implement cb_recall_slotAndy Adamson
Drain the fore channel and reset the max_slots to the new value. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-02-10nfs41: back channel drc minimal implementationAndy Adamson
For now the back channel ca_maxresponsesize_cached is 0 and there is no backchannel DRC. Return NFS4ERR_REP_TOO_BIG_TO_CACHE when a cb_sequence cachethis is true. When it is false, return NFS4ERR_RETRY_UNCACHED_REP as the next operation error. Remember the replay error accross compound operation processing. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-02-10nfs41: prepare for back channel drcAndy Adamson
Make all cb_sequence arguments available to verify_seqid which will make replay decisions. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-02-10nfs41: remove uneeded checks in callback processingAndy Adamson
All callback operations have arguments to decode and require processing. The preprocess_nfs4X_op functions catch unsupported or illegal ops so decode_args and process_op pointers are always non NULL. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>