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* [PATCH] JFFS2: SUMMARY: fix a summary collecting bugZoltan Sogor2006-09-161-0/+5
| | | | | | | | | | | | | | In some special case (padding because of sync or umount) it can be possible that summary information is not fit to the end of the erase block. In these cases the collecting of summary is disabled for this erase block. The problem was that this was not respected by jffs2_sum_add_kvec(). This patch fix this bug. Signed-off-by: Ferenc Havasi <havasi@inf.u-szeged.hu> Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ext3 sequential read regression fixSuparna Bhattacharya2006-09-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ext3-get-blocks support caused ~20% degrade in Sequential read performance (tiobench). Problem is with marking the buffer boundary so IO can be submitted right away. Here is the patch to fix it. 2.6.18-rc6: ----------- # ./iotest 1048576+0 records in 1048576+0 records out 4294967296 bytes (4.3 GB) copied, 75.2726 seconds, 57.1 MB/s real 1m15.285s user 0m0.276s sys 0m3.884s 2.6.18-rc6 + fix: ----------------- [root@elm3a241 ~]# ./iotest 1048576+0 records in 1048576+0 records out 4294967296 bytes (4.3 GB) copied, 62.9356 seconds, 68.2 MB/s The boundary block check in ext3_get_blocks_handle needs to be adjusted against the count of blocks mapped in this call, now that it can map more than one block. Signed-off-by: Suparna Bhattacharya <suparna@in.ibm.com> Tested-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: Make ext3 reject filehandles referring to invalid inode numberNeilBrown2006-09-161-0/+42
| | | | | | | | | | | Inodes earlier than the 'first' inode (e.g. journal, resize) should be rejected early - except the root inode. Also inode numbers that are too big should be rejected early. [akpm@osdl.org: cleanup] Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: Have ext2 reject file handles with bad inode numbers earlyNeilBrown2006-09-161-0/+39
| | | | | | | | | This prevents bad inode numbers from triggering errors in ext2_get_inode. [akpm@osdl.org: speedup, cleanup] Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds2006-09-121-4/+7
|\ | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: [CIFS] Fix CIFS readdir access denied when SE Linux enabled
| * [CIFS] Fix CIFS readdir access denied when SE Linux enabledSteve French2006-09-061-4/+7
| | | | | | | | | | | | | | | | | | | | | | CIFS had one path in which dentry was instantiated before the corresponding inode metadata was filled in. Fixes Redhat bugzilla bug #163493 Signed-off-by: Steve French <sfrench@us.ibm.com> Acked-by: Eric Paris <eparis@redhat.com> Acked-by: Dave Kleikamp <shaggy@austin.ibm.com>
* | Merge git://oss.sgi.com:8090/xfs/xfs-2.6Linus Torvalds2006-09-127-42/+76
|\ \ | | | | | | | | | | | | | | | | | | | | | * git://oss.sgi.com:8090/xfs/xfs-2.6: [XFS] Fix a bad pointer dereference in the quota statvfs handling. [XFS] Fix xfs_splice_write() so appended data gets to disk. [XFS] Fix ABBA deadlock between i_mutex and iolock. Avoid calling [XFS] Prevent free space oversubscription and xfssyncd looping.
| * | [XFS] Fix a bad pointer dereference in the quota statvfs handling.Nathan Scott2006-09-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | SGI-PV: 955993 SGI-Modid: xfs-linux-melb:xfs-kern:26934a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: David Chatterton <chatz@sgi.com>
| * | [XFS] Fix xfs_splice_write() so appended data gets to disk.David Chinner2006-09-071-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | xfs_splice_write() failed to update the on disk inode size when extending the so when the file was closed the range extended by splice was truncated off. Hence any region of a file written to by splice would end up as a hole full of zeros. SGI-PV: 955939 SGI-Modid: xfs-linux-melb:xfs-kern:26920a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: David Chatterton <chatz@sgi.com>
| * | [XFS] Fix ABBA deadlock between i_mutex and iolock. Avoid callingLachlan McIlroy2006-09-072-10/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | __blockdev_direct_IO for the DIO_OWN_LOCKING case for direct I/O reads since it drops and reacquires the i_mutex while holding the iolock and this violates the locking order. SGI-PV: 955696 SGI-Modid: xfs-linux-melb:xfs-kern:26898a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: David Chatterton <chatz@sgi.com>
| * | [XFS] Prevent free space oversubscription and xfssyncd looping.David Chinner2006-09-074-31/+40
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The fix for recent ENOSPC deadlocks introduced certain limitations on allocations. The fix could cause xfssyncd to loop endlessly if we did not leave some space free for the allocator to work correctly. Basically, we needed to ensure that we had at least 4 blocks free for an AG free list and a block for the inode bmap btree at all times. However, this did not take into account the fact that each AG has a free list that needs 4 blocks. Hence any filesystem with more than one AG could cause oversubscription of free space and make xfssyncd spin forever trying to allocate space needed for AG freelists that was not available in the AG. The following patch reserves space for the free lists in all AGs plus the inode bmap btree which prevents oversubscription. It also prevents those blocks from being reported as free space (as they can never be used) and makes the SMP in-core superblock accounting code and the reserved block ioctl respect this requirement. SGI-PV: 955674 SGI-Modid: xfs-linux-melb:xfs-kern:26894a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: David Chatterton <chatz@sgi.com>
* | [PATCH] NFS: large non-page-aligned direct I/O clobbers memoryTrond Myklebust2006-09-083-69/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The logic in nfs_direct_read_schedule and nfs_direct_write_schedule can allow data->npages to be one larger than rpages. This causes a page pointer to be written beyond the end of the pagevec in nfs_read_data (or nfs_write_data). Fix this by making nfs_(read|write)_alloc() calculate the size of the pagevec array, and initialise data->npages. Also get rid of the redundant argument to nfs_commit_alloc(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] ext3_getblk() should handle HOLE correctlyBadari Pulavarty2006-09-081-4/+7
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It has been reported that ext3_getblk() is not doing the right thing and triggering following WARN(): BUG: warning at fs/ext3/inode.c:1016/ext3_getblk() <c01c5140> ext3_getblk+0x98/0x2a6 <c03b2806> md_wakeup_thread+0x26/0x2a <c01c536d> ext3_bread+0x1f/0x88 <c01cedf9> ext3_quota_read+0x136/0x1ae <c018b683> v1_read_dqblk+0x61/0xac <c0188f32> dquot_acquire+0xf6/0x107 <c01ceaba> ext3_acquire_dquot+0x46/0x68 <c01897d4> dqget+0x155/0x1e7 <c018a97b> dquot_transfer+0x3e0/0x3e9 <c016fe52> dput+0x23/0x13e <c01c7986> ext3_setattr+0xc3/0x240 <c0120f66> current_fs_time+0x52/0x6a <c017320e> notify_change+0x2bd/0x30d <c0159246> chown_common+0x9c/0xc5 <c02a222c> strncpy_from_user+0x3b/0x68 <c0167fe6> do_path_lookup+0xdf/0x266 <c016841b> __user_walk_fd+0x44/0x5a <c01592b9> sys_chown+0x4a/0x55 <c015a43c> vfs_write+0xe7/0x13c <c01695d4> sys_mkdir+0x1f/0x23 <c0102a97> syscall_call+0x7/0xb Looking at the code, it looks like it's not handle HOLE correctly. It ends up returning -EIO. Here is the patch to fix it. If we really want to be paranoid, we can allow return values 0 (HOLE), 1 (we asked for one block) and return -EIO for more than 1 block. But I really don't see a reason for doing it - all we need is the block# here. (doesn't matter how many blocks are mapped). ext3_get_blocks_handle() returns number of blocks it mapped. It returns 0 in case of HOLE. ext3_getblk() should handle HOLE properly (currently its dumping warning stack and returning -EIO). Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Acked-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] add missing desctiption in super.cHenrik Kretzschmar2006-09-061-0/+1
| | | | | | | | Adds kernel-doc for alloc_super() type in fs/super.c. Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] manage-jbd-its-own-slab fixBadari Pulavarty2006-09-011-1/+1
| | | | | | | | | Missed a place where I forgot to convert kfree() to kmem_cache_free() as part of jbd-manage-its-own-slab changes. Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [XFS] Fix char size overflow in bmap_alloc call for unwritten extentAdrian Bunk2006-08-301-1/+1
| | | | | | | | | | | | | conversion. Since bma.conv is a char and XFS_BMAPI_CONVERT is 0x1000, bma.conv was always assigned zero. Spotted by the GNU C compiler (SVN version). SGI-PV: 947312 SGI-Modid: xfs-linux-melb:xfs-kern:26887a Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Nathan Scott <nathans@sgi.com>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds2006-08-2917-260/+576
|\ | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: [CIFS] Do not send Query All EAs SMB when mount option nouser_xattr [CIFS] endian errors in lanman protocol support [CIFS] Fix oops in cifs_close due to unitialized lock sem and list in [CIFS] Fix oops when negotiating lanman and no password specified [CIFS] [CIFS] Allow cifsd to suspend if connection is lost [CIFS] Make midState usage more consistent [CIFS] spinlock protect read of last srv response time in timeout path [CIFS] Do not time out posix brl requests when using new posix setfileinfo
| * [CIFS] Do not send Query All EAs SMB when mount option nouser_xattrSteve French2006-08-163-3/+8
| | | | | | | | | | | | | | | | specified Pointed out by Bjoern Jacke Signed-off-by: Steve French <sfrench@us.ibm.com>
| * [CIFS] endian errors in lanman protocol supportSteve French2006-08-153-3/+3
| | | | | | | | | | | | | | | | | | le16 compared to host-endian constant u8 fed to le32_to_cpu() le16 compared to host-endian constant Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * [CIFS] Fix oops in cifs_close due to unitialized lock sem and list inSteve French2006-08-153-7/+16
| | | | | | | | | | | | new POSIX locking code Signed-off-by: Steve French <sfrench@us.ibm.com>
| * [CIFS] Fix oops when negotiating lanman and no password specifiedSteve French2006-08-111-1/+2
| | | | | | | | | | | | | | Pointed out by Guenter Kukkukk Signed-of-by: Steve French <sfrench@us.ibm.com> (cherry picked from bbf33d512da608c7221fec42b56b9ef89c25a5ee commit)
| * [CIFS]Jeremy Allison2006-08-117-296/+512
| | | | | | | | | | | | | | | | | | | | | | Allow Windows blocking locks to be cancelled via a CANCEL_LOCK call. TODO - restrict this to servers that support NT_STATUS codes (Win9x will probably not support this call). Signed-off-by: Jeremy Allison <jra@samba.org> Signed-off-by: Steve French <sfrench@us.ibm.com> (cherry picked from 570d4d2d895569825d0d017d4e76b51138f68864 commit)
| * [CIFS] Allow cifsd to suspend if connection is lostSteve French2006-08-111-0/+1
| | | | | | | | | | | | | | | | | | | | | | Make cifsd allow us to suspend if it has lost the connection with a server Ref: http://bugzilla.kernel.org/show_bug.cgi?id=6811 Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Steve French <sfrench@us.ibm.com> (cherry picked from 27bd6cd87b0ada66515ad49bc346d77d1e9d3e05 commit)
| * [CIFS] Make midState usage more consistentSteve French2006-08-111-6/+6
| | | | | | | | | | | | | | | | | | Although harmless, we were sometimes treating midState like it contained flags but they are exclusive states, and this makes that more clear. Signed-off-by: Jeremy Allison <jra@samba.org> Signed-off-by: Steve French <sfrench@us.ibm.com> (cherry picked from 586c057c3a68dd6ae0f3ba94fbf76798b1558074 commit)
| * [CIFS] spinlock protect read of last srv response time in timeout pathSteve French2006-08-111-23/+76
| | | | | | | | | | | | Signed-off-by: Jeremy Allison <jra@samba.org> Signed-off-by: Steve French <sfrench@us.ibm.com> (cherry picked from b33a3f55e54fd210fc043eafcf83728b03bc9e02 commit)
| * [CIFS] Do not time out posix brl requests when using new posix setfileinfoSteve French2006-08-118-18/+49
| | | | | | | | | | | | | | | | | | | | request and do not time out slow requests to a server that is still responding well to other threads Suggested by jra of Samba team Signed-off-by: Steve French <sfrench@us.ibm.com> (cherry picked from 89b57148115479eef074b8d3f86c4c86c96ac969 commit)
* | [PATCH] /proc/meminfo: don't put spaces in namesAndrew Morton2006-08-271-1/+1
| | | | | | | | | | | | | | | | | | | | None of the other /proc/meminfo lines have a space in the identifier. This post-2.6.17 addition has the potential to break existing parsers, so use an underscore instead (like Committed_AS). Cc: Christoph Lameter <clameter@engr.sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] fix up lockdep trace in fs/exec.cDave Jones2006-08-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes the locking error noticed by lockdep: ============================================= [ INFO: possible recursive locking detected ] --------------------------------------------- init/1 is trying to acquire lock: (&sighand->siglock){....}, at: [<c047a78a>] flush_old_exec+0x3ae/0x859 but task is already holding lock: (&sighand->siglock){....}, at: [<c047a77a>] flush_old_exec+0x39e/0x859 other info that might help us debug this: 2 locks held by init/1: #0: (tasklist_lock){..--}, at: [<c047a76a>] flush_old_exec+0x38e/0x859 #1: (&sighand->siglock){....}, at: [<c047a77a>] flush_old_exec+0x39e/0x859 stack backtrace: [<c04051e1>] show_trace_log_lvl+0x54/0xfd [<c040579d>] show_trace+0xd/0x10 [<c04058b6>] dump_stack+0x19/0x1b [<c043b33a>] __lock_acquire+0x773/0x997 [<c043bacf>] lock_acquire+0x4b/0x6c [<c060630b>] _spin_lock+0x19/0x28 [<c047a78a>] flush_old_exec+0x3ae/0x859 [<c0498053>] load_elf_binary+0x4aa/0x1628 [<c0479cab>] search_binary_handler+0xa7/0x24e [<c047b577>] do_execve+0x15b/0x1f9 [<c04022b4>] sys_execve+0x29/0x4d [<c0403faf>] syscall_call+0x7/0xb Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] lockdep: annotate reiserfsIngo Molnar2006-08-271-1/+1
| | | | | | | | | | | | | | | | | | reiserfs seems to have another locking level layer for the i_mutex due to the xattrs-are-a-directory thing. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Manage jbd allocations from its own slabsBadari Pulavarty2006-08-273-13/+94
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | JBD currently allocates commit and frozen buffers from slabs. With CONFIG_SLAB_DEBUG, its possible for an allocation to cross the page boundary causing IO problems. https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=200127 So, instead of allocating these from regular slabs - manage allocation from its own slabs and disable slab debug for these slabs. [akpm@osdl.org: cleanups] Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] eventpoll.c compile fixMasoud Asgharifard Sharbiani2006-08-271-2/+2
| | | | | | | | | | | | | | | | | | | | Fix two compile failures in eventpoll.c code which would happen if DEBUG_EPOLL is bigger than zero. Signed-off-by: Masoud Sharbiani <masouds@google.com> Cc: Davide Libenzi <davidel@xmailserver.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] ufs: truncate correctionEvgeniy Dushistov2006-08-271-52/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) When we allocated last fragment in ufs_truncate, we read page, check if block mapped to address, and if not trying to allocate it. This is wrong behaviour, fragment may be NOT allocated, but mapped, this happened because of "block map" function not checked allocated fragment or not, it just take address of the first fragment in the block, add offset of fragment and return result, this is correct behaviour in almost all situation except call from ufs_truncate. 2) Almost all implementation of UFS, which I can investigate have such "defect": if you have full disk, and try truncate file, for example 3GB to 2MB, and have hole in this region, truncate return -ENOSPC. I tried evade from this problem, but "block allocation" algorithm is tied to right value of i_lastfrag, and fix of this corner case may slow down of ordinaries scenarios, so this patch makes behavior of "truncate" operations similar to what other UFS implementations do. Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] ufs: write to hole in big fileEvgeniy Dushistov2006-08-271-14/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On UFS, this scenario: open(O_TRUNC) lseek(1024 * 1024 * 80) write("A") lseek(1024 * 2) write("A") may cause access to invalid address. This happened because of "goal" is calculated in wrong way in block allocation path, as I see this problem exists also in 2.4. We use construction like this i_data[lastfrag], i_data array of pointers to direct blocks, indirect and so on, it has ceratain size ~20 elements, and lastfrag may have value for example 40000. Also this patch fixes related to handling such scenario issues, wrong zeroing metadata, in case of block(not fragment) allocation, and wrong goal calculation, when we allocate block Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] ext3 filesystem bogus ENOSPC with reservation fixMingming Cao2006-08-271-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | To handle the earlier bogus ENOSPC error caused by filesystem full of block reservation, current code falls back to non block reservation, starts to allocate block(s) from the goal allocation block group as if there is no block reservation. Current code needs to re-load the corresponding block group descriptor for the initial goal block group in this case. The patch fixes this. Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] ext2: prevent div-by-zero on corrupted fsAndries Brouwer2006-08-271-1/+1
| | | | | | | | | | | | | | | | Mounting an ext2 filesystem with zero s_inodes_per_group will cause a divide error. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Fix for minix crashAndries Brouwer2006-08-271-3/+10
| | | | | | | | | | | | | | | | | | | | | | | | Mounting a (corrupt) minix filesystem with zero s_zmap_blocks gives a spectacular crash on my 2.6.17.8 system, no doubt because minix/inode.c does an unconditional minix_set_bit(0,sbi->s_zmap[0]->b_data); [akpm@osdl.org: make labels conistent while we're there] Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] lockdep: fix blkdev_open() warningPeter Zijlstra2006-08-271-58/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Wed, 2006-08-09 at 07:57 +0200, Rolf Eike Beer wrote: > ============================================= > [ INFO: possible recursive locking detected ] > --------------------------------------------- > parted/7929 is trying to acquire lock: > (&bdev->bd_mutex){--..}, at: [<c105eb8d>] __blkdev_put+0x1e/0x13c > > but task is already holding lock: > (&bdev->bd_mutex){--..}, at: [<c105eec6>] do_open+0x72/0x3a8 > > other info that might help us debug this: > 1 lock held by parted/7929: > #0: (&bdev->bd_mutex){--..}, at: [<c105eec6>] do_open+0x72/0x3a8 > stack backtrace: > [<c1003aad>] show_trace_log_lvl+0x58/0x15b > [<c100495f>] show_trace+0xd/0x10 > [<c1004979>] dump_stack+0x17/0x1a > [<c102dee5>] __lock_acquire+0x753/0x99c > [<c102e3b0>] lock_acquire+0x4a/0x6a > [<c1204501>] mutex_lock_nested+0xc8/0x20c > [<c105eb8d>] __blkdev_put+0x1e/0x13c > [<c105ecc4>] blkdev_put+0xa/0xc > [<c105f18a>] do_open+0x336/0x3a8 > [<c105f21b>] blkdev_open+0x1f/0x4c > [<c1057b40>] __dentry_open+0xc7/0x1aa > [<c1057c91>] nameidata_to_filp+0x1c/0x2e > [<c1057cd1>] do_filp_open+0x2e/0x35 > [<c1057dd7>] do_sys_open+0x38/0x68 > [<c1057e33>] sys_open+0x16/0x18 > [<c1002845>] sysenter_past_esp+0x56/0x8d OK, I'm having a look here; its all new to me so bear with me. blkdev_open() calls do_open(bdev, ...,BD_MUTEX_NORMAL) and takes mutex_lock_nested(&bdev->bd_mutex, BD_MUTEX_NORMAL) then something fails, and we're thrown to: out_first: where if (bdev != bdev->bd_contains) blkdev_put(bdev->bd_contains) which is __blkdev_put(bdev->bd_contains, BD_MUTEX_NORMAL) which does mutex_lock_nested(&bdev->bd_contains->bd_mutex, BD_MUTEX_NORMAL) <--- lockdep trigger When going to out_first, dbev->bd_contains is either bdev or whole, and since we take the branch it must be whole. So it seems to me the following patch would be the right one: [akpm@osdl.org: compile fix] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arjan van de Ven <arjan@linux.intel.com> Acked-by: NeilBrown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [DISKLABEL] SUN: Fix signed int usage for sector countJeff Mahoney2006-08-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current sun disklabel code uses a signed int for the sector count. When partitions larger than 1 TB are used, the cast to a sector_t causes the partition sizes to be invalid: # cat /proc/paritions | grep sdan 66 112 2146435072 sdan 66 115 9223372036853660736 sdan3 66 120 9223372036853660736 sdan8 This patch switches the sector count to an unsigned int to fix this. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'fixes' of git://git.linux-nfs.org/pub/linux/nfs-2.6Greg Kroah-Hartman2006-08-248-39/+80
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| * | VFS: Remove redundant open-coded mode bit checks in open_exec().Trond Myklebust2006-08-241-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | The check in open_exec() for inode->i_mode & 0111 has been made redundant by the fix to permission(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> (cherry picked from 1d3741c5d991686699f100b65b9956f7ee7ae0ae commit)
| * | VFS: Remove redundant open-coded mode bit check in prepare_binfmt().Trond Myklebust2006-08-241-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | The check in prepare_binfmt() for inode->i_mode & 0111 is redundant, since open_exec() will already have done that. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> (cherry picked from 822dec482ced07af32c378cd936d77345786572b commit)
| * | VFS: Fix access("file", X_OK) in the presence of ACLsTrond Myklebust2006-08-241-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, the access() call will return incorrect information on NFS if there exists an ACL that grants execute access to the user on a regular file. The reason the information is incorrect is that the VFS overrides this execute access in open_exec() by checking (inode->i_mode & 0111). This patch propagates the VFS execute bit check back into the generic permission() call. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> (cherry picked from 64cbae98848c4c99851cb0a405f0b4982cd76c1e commit)
| * | NFSv4: Add v4 exception handling for the ACL functions.Trond Myklebust2006-08-241-2/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | This is needed in order to handle any NFS4ERR_DELAY errors that might be returned by the server. It also ensures that we map the NFSv4 errors before they are returned to userland. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> (cherry picked from 71c12b3f0abc7501f6ed231a6d17bc9c05a238dc commit)
| * | NFS: Check lengths more thoroughly in NFS4 readdir XDR decodeDavid Howells2006-08-241-10/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Check the bounds of length specifiers more thoroughly in the XDR decoding of NFS4 readdir reply data. Currently, if the server returns a bitmap or attr length that causes the current decode point pointer to wrap, this could go undetected (consider a small "negative" length on a 32-bit machine). Also add a check into the main XDR decode handler to make sure that the amount of data is a multiple of four bytes (as specified by RFC-1014). This makes sure that we can do u32* pointer subtraction in the NFS client without risking an undefined result (the result is undefined if the pointers are not correctly aligned with respect to one another). Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> (cherry picked from 5861fddd64a7eaf7e8b1a9997455a24e7f688092 commit)
| * | NFS: Fix issue with EIO on NFS readTrond Myklebust2006-08-241-8/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The problem is that we may be caching writes that would extend the file and create a hole in the region that we are reading. In this case, we need to detect the eof from the server, ensure that we zero out the pages that are part of the hole and mark them as up to date. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> (cherry picked from 856b603b01b99146918c093969b6cb1b1b0f1c01 commit)
| * | LOCKD: Fix a deadlock in nlm_traverse_files()Trond Myklebust2006-08-241-6/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | nlm_traverse_files() is not allowed to hold the nlm_file_mutex while calling nlm_inspect file, since it may end up calling nlm_release_file() when releaseing the blocks. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> (cherry picked from e558d3cde986e04f68afe8c790ad68ef4b94587a commit)
| * | SUNRPC: Fix dentry refcounting issues with users of rpc_pipefsTrond Myklebust2006-08-241-1/+0
| | | | | | | | | | | | | | | | | | | | | rpc_unlink() and rpc_rmdir() will dput the dentry reference for you. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> (cherry picked from a05a57effa71a1f67ccbfc52335c10c8b85f3f6a commit)
| * | SUNRPC: make rpc_unlink() take a dentry argument instead of a pathTrond Myklebust2006-08-241-2/+1
| | | | | | | | | | | | | | | Signe-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> (cherry picked from 88bf6d811b01a4be7fd507d18bf5f1c527989089 commit)
| * | VFS: add lookup hint for network file systemsASANO Masahiro2006-08-241-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I'm trying to speeding up mkdir(2) for network file systems. A typical mkdir(2) calls two inode_operations: lookup and mkdir. The lookup operation would fail with ENOENT in common case. I think it is unnecessary because the subsequent mkdir operation can check it. In case of creat(2), lookup operation is called with the LOOKUP_CREATE flag, so individual filesystem can omit real lookup. e.g. nfs_lookup(). Here is a sample patch which uses LOOKUP_CREATE and O_EXCL on mkdir, symlink and mknod. This uses the gadget for creat(2). And here is the result of a benchmark on NFSv3. mkdir(2) 10,000 times: original 50.5 sec patched 29.0 sec Signed-off-by: ASANO Masahiro <masano@tnes.nec.co.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> (cherry picked from fab7bf44449b29f9d5572a5dd8adcf7c91d5bf0f commit)
| * | NFS: Fix a potential deadlock in nfs_release_pageNikita Danilov2006-08-241-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | nfs_wb_page() waits on request completion and, as a result, is not safe to be called from nfs_release_page() invoked by VM scanner as part of GFP_NOFS allocation. Fix possible deadlock by analyzing gfp mask and refusing to release page if __GFP_FS is not set. Signed-off-by: Nikita Danilov <danilov@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> (cherry picked from 374d969debfb290bafcb41d28918dc6f7e43ce31 commit)
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