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2011-12-16Squashandroid-20111223Benn Pörscke
Change-Id: I2fcf46d1fc4b0cd4c61e5be3654c43b80db86015
2011-10-28GFS2: Fix mount hang caused by certain access pattern to sysfs filesSteven Whitehouse
commit 19237039919088781b4191a00bdc1284d8fea1dd upstream. Depending upon the order of userspace/kernel during the mount process, this can result in a hang without the _all version of the completion. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Change-Id: Id48f6bee3e1038562294d2eb936b5290c1667731 Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35674 Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
2011-10-28proc: fix a race in do_io_accounting()Vasiliy Kulikov
commit 293eb1e7772b25a93647c798c7b89bf26c2da2e0 upstream. If an inode's mode permits opening /proc/PID/io and the resulting file descriptor is kept across execve() of a setuid or similar binary, the ptrace_may_access() check tries to prevent using this fd against the task with escalated privileges. Unfortunately, there is a race in the check against execve(). If execve() is processed after the ptrace check, but before the actual io information gathering, io statistics will be gathered from the privileged process. At least in theory this might lead to gathering sensible information (like ssh/ftp password length) that wouldn't be available otherwise. Holding task->signal->cred_guard_mutex while gathering the io information should protect against the race. The order of locking is similar to the one inside of ptrace_attach(): first goes cred_guard_mutex, then lock_task_sighand(). Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Change-Id: I8ec024ff4c9f8d72a6883411920331bd1d512731 Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35659 Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
2011-10-28NFS: Fix spurious readdir cookie loop messagesTrond Myklebust
commit 0c0308066ca53fdf1423895f3a42838b67b3a5a8 upstream. If the directory contents change, then we have to accept that the file->f_pos value may shrink if we do a 'search-by-cookie'. In that case, we should turn off the loop detection and let the NFS client try to recover. The patch also fixes a second loop detection bug by ensuring that after turning on the ctx->duped flag, we read at least one new cookie into ctx->dir_cookie before attempting to match with ctx->dup_cookie. Reported-by: Petr Vandrovec <petr@vandrovec.name> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Change-Id: Ibe4963eb5f9f34251713f1e5776d6b409e04616a Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35658 Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
2011-10-28NFSv4: Don't use the delegation->inode in nfs_mark_return_delegation()Trond Myklebust
commit ed1e6211a0a134ff23592c6f057af982ad5dab52 upstream. nfs_mark_return_delegation() is usually called without any locking, and so it is not safe to dereference delegation->inode. Since the inode is only used to discover the nfs_client anyway, it makes more sense to have the callers pass a valid pointer to the nfs_server as a parameter. Reported-by: Ian Kent <raven@themaw.net> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Change-Id: Ia0a265a9fb22ea800d4394ad8308345734f88a6f Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35657 Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
2011-10-28nfsd4: fix file leak on open_downgradeJ. Bruce Fields
commit f197c27196a5e7631b89e2e92daa096fcf7c302c upstream. Stateid's hold a read reference for a read open, a write reference for a write open, and an additional one of each for each read+write open. The latter wasn't getting put on a downgrade, so something like: open RW open R downgrade to R was resulting in a file leak. Also fix an imbalance in an error path. Regression from 7d94784293096c0a46897acdb83be5abd9278ece "nfsd4: fix downgrade/lock logic". Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Change-Id: If182a7b4a7cf7051b9eb141822feb50701efc958 Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35655 Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
2011-10-28nfsd4: remember to put RW access on stateid destructionJ. Bruce Fields
commit 499f3edc23ca0431f3a0a6736b3a40944c81bf3b upstream. Without this, for example, open read open read+write close will result in a struct file leak. Regression from 7d94784293096c0a46897acdb83be5abd9278ece "nfsd4: fix downgrade/lock logic". Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Change-Id: I028ed3e47f5ec50cae71a6e20464ddcf3921131e Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35654 Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
2011-10-28nfsd: don't break lease on CLAIM_DELEGATE_CURCasey Bodley
commit 0c12eaffdf09466f36a9ffe970dda8f4aeb6efc0 upstream. CLAIM_DELEGATE_CUR is used in response to a broken lease; allowing it to break the lease and return EAGAIN leaves the client unable to make progress in returning the delegation nfs4_get_vfs_file() now takes struct nfsd4_open for access to the claim type, and calls nfsd_open() with NFSD_MAY_NOT_BREAK_LEASE when claim type is CLAIM_DELEGATE_CUR Signed-off-by: Casey Bodley <cbodley@citi.umich.edu> Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Change-Id: Ifd60da8af06825b5578ca3fa0dec8bec4d3e40ca Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35653 Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
2011-10-28eCryptfs: Unlock keys needed by ecryptfsdTyler Hicks
commit b2987a5e05ec7a1af7ca42e5d5349d7a22753031 upstream. Fixes a regression caused by b5695d04634fa4ccca7dcbc05bb4a66522f02e0b Kernel keyring keys containing eCryptfs authentication tokens should not be write locked when calling out to ecryptfsd to wrap and unwrap file encryption keys. The eCryptfs kernel code can not hold the key's write lock because ecryptfsd needs to request the key after receiving such a request from the kernel. Without this fix, all file opens and creates will timeout and fail when using the eCryptfs PKI infrastructure. This is not an issue when using passphrase-based mount keys, which is the most widely deployed eCryptfs configuration. Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com> Acked-by: Roberto Sassu <roberto.sassu@polito.it> Tested-by: Roberto Sassu <roberto.sassu@polito.it> Tested-by: Alexis Hafner1 <haf@zurich.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Change-Id: I4b2027ee93cb3dd4f85994b8465d6919fc8f906a Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35652 Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
2011-10-28ecryptfs: Make inode bdi consistent with superblock bdiThieu Le
commit 985ca0e626e195ea08a1a82b8dbeb6719747429a upstream. Make the inode mapping bdi consistent with the superblock bdi so that dirty pages are flushed properly. Signed-off-by: Thieu Le <thieule@chromium.org> Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Change-Id: I5c01b190e10507f641d7ff0c5c6fc76b4e4d859c Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35651 Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
2011-10-28ext3: Fix oops in ext3_try_to_allocate_with_rsv()Jan Kara
commit ad95c5e9bc8b5885f94dce720137cac8fa8da4c9 upstream. Block allocation is called from two places: ext3_get_blocks_handle() and ext3_xattr_block_set(). These two callers are not necessarily synchronized because xattr code holds only xattr_sem and i_mutex, and ext3_get_blocks_handle() may hold only truncate_mutex when called from writepage() path. Block reservation code does not expect two concurrent allocations to happen to the same inode and thus assertions can be triggered or reservation structure corruption can occur. Fix the problem by taking truncate_mutex in xattr code to serialize allocations. CC: Sage Weil <sage@newdream.net> Reported-by: Fyodor Ustinov <ufm@ufm.su> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Change-Id: I9fd6a0095f1372c2e56d07134f598f8bfa9f3567 Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35650 Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
2011-10-28ext4: free allocated and pre-allocated blocks when check_eofblocks_fl failsJiaying Zhang
commit 575a1d4bdfa2ea9fc10733013136145b497e1be0 upstream. Upon corrupted inode or disk failures, we may fail after we already allocate some blocks from the inode or take some blocks from the inode's preallocation list, but before we successfully insert the corresponding extent to the extent tree. In this case, we should free any allocated blocks and discard the inode's preallocated blocks because the entries in the inode's preallocation list may be in an inconsistent state. Signed-off-by: Jiaying Zhang <jiayingz@google.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Change-Id: If006ca82d5d0f521af52104f3c4db1d5d9413e47 Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35649 Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
2011-10-28ext4: fix i_blocks/quota accounting when extent insertion failsMaxim Patlasov
commit 7132de744ba76930d13033061018ddd7e3e8cd91 upstream. The current implementation of ext4_free_blocks() always calls dquot_free_block This looks quite sensible in the most cases: blocks to be freed are associated with inode and were accounted in quota and i_blocks some time ago. However, there is a case when blocks to free were not accounted by the time calling ext4_free_blocks() yet: 1. delalloc is on, write_begin pre-allocated some space in quota 2. write-back happens, ext4 allocates some blocks in ext4_ext_map_blocks() 3. then ext4_ext_map_blocks() gets an error (e.g. ENOSPC) from ext4_ext_insert_extent() and calls ext4_free_blocks(). In this scenario, ext4_free_blocks() calls dquot_free_block() who, in turn, decrements i_blocks for blocks which were not accounted yet (due to delalloc) After clean umount, e2fsck reports something like: > Inode 21, i_blocks is 5080, should be 5128. Fix<y>? because i_blocks was erroneously decremented as explained above. The patch fixes the problem by passing the new flag EXT4_FREE_BLOCKS_NO_QUOT_UPDATE to ext4_free_blocks(), to request that the dquot_free_block() call be skipped. Signed-off-by: Maxim Patlasov <maxim.patlasov@gmail.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Change-Id: Ifa15e3180eee516984412425556287f5458b3d27 Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35648 Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
2011-10-28pnfs: use lwb as layoutcommit lengthPeng Tao
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> Change-Id: Ia331da3c27df7f5ba14e316f3dfd1717d67d1947 Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35633 Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
2011-10-28pnfs: let layoutcommit handle a list of lsegPeng Tao
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> Change-Id: I713a4a2a5eede21594125db9682a025a82142559 Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35632 Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
2011-10-28pnfs: save layoutcommit cred at layout header initPeng Tao
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> Change-Id: I94971f2dea31dacfb681a13e5768714976add0e8 Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35631 Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
2011-10-28pnfs: save layoutcommit lwb at layout headerPeng Tao
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> Change-Id: Ibf606385c67299aab90342fb7cc32bfaf44c1b64 Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35630 Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
2011-10-28CIFS: Fix oops while mounting with prefixpathPavel Shilovsky
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> Change-Id: Id7970ed5e567fd21e42ec661c2ab0f366f12779f Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/35604 Tested-by: Per VAHLNE <per.xx.vahlne@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
2011-09-19Merge linux-linaro-3.0-2011.07-1-android-1 into..Ulf Hansson
..linux-linaro-3.0-2011.07-1_glk3.0 Conflicts: arch/arm/common/Makefile drivers/misc/Kconfig drivers/misc/Makefile kernel/printk.c Change-Id: I126f34edb1879981909072beefb2738cad26f951
2011-09-19FS: FAT: Mark unitialized variableJonas Aaberg
Remove a compile warning ST-Ericsson Linux next: Not tested, ask SSM for ER ST-Ericsson ID: - ST-Ericsson FOSS-OUT ID: Trivial Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com> Change-Id: I16f53b75062ad0ed18e4f0ed128353a3a77d555d Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/24636 Reviewed-by: QATEST Reviewed-by: Linus WALLEIJ <linus.walleij@stericsson.com> Tested-by: Linus WALLEIJ <linus.walleij@stericsson.com>
2011-09-19FS: FAT: Fix build warningLee Jones
Ported from Jonas Aaberg's 2.6.35 GLK commit for the 2.6.38 GLK Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com> Change-Id: I9f86641ad50f050271b30ae2f03906f831ee614d Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/17148 Reviewed-by: Sebastian RASMUSSEN <sebastian.rasmussen@stericsson.com> Signed-off-by: Lee Jones <lee.jones@canonical.com>
2011-09-19fix cache coherence issues with bounce buffersMian Yousaf Kaukab
[Rabin VINCENT] This is for I$-D$ coherence issues when bounce buffers are used for the MMC driver and code is executed from a file system on eMMC. IMO a better fix is to either change flush_kernel_dcache_page() to flush the D$ even on VIPT non-aliasing caches or to replace the flush_kernel_dcache_page() in lib/scatterlist.c with flush_dcache_page(). Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2011-09-19fs/partitions: Adapt blkdevparts to new interfaceRobert Rosengren
fs/partitions: Adapt blkdevparts to new interface of kernel 2.6.35 ST-Ericsson ID: ER282603 ST-Ericsson FOSS-OUT ID: Trivial Change-Id: I95fccf7f47fd5e4f716b6a0e6fec001d2c9428cf Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/10308 Tested-by: Robert ROSENGREN <robert.rosengren@stericsson.com> Reviewed-by: Ulf HANSSON <ulf.hansson@stericsson.com> Reviewed-by: Sebastian RASMUSSEN <sebastian.rasmussen@stericsson.com>
2011-09-19Added commandline partitions for block devicesUlf Hansson
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/305 Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com> Reviewed-by: Linus WALLEIJ <linus.walleij@stericsson.com> Tested-by: Linus WALLEIJ <linus.walleij@stericsson.com> Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com> Change-Id: I3725676a9177b0072a435865ae578a6e17bd7168 Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/2206
2011-07-25Merge branch 'upstream/linaro-3.0' into linaro-android-3.0John Stultz
2011-07-21Merge 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 wrong length in cifs_iovec_read
2011-07-21vfs: drop conditional inode prefetch in __do_lookup_rcuLinus Torvalds
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>
2011-07-21FS-Cache: Fix __fscache_uncache_all_inode_pages()'s outer loopJan Beulich
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>
2011-07-21CIFS: Fix wrong length in cifs_iovec_readPavel Shilovsky
Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2011-07-19fs/libfs.c: fix simple_attr_write() on 32bit machinesAkinobu Mita
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>
2011-07-19Merge branch 'for-linus' of ↵Linus Torvalds
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 ]
2011-07-19vfs: fix race in rcu lookup of pruned dentryLinus Torvalds
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>
2011-07-18Fix cifs_get_root()Al Viro
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>
2011-07-18Merge branch 'for-linus' of ↵Linus Torvalds
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
2011-07-17hppfs_lookup(): don't open-code lookup_one_len()Al Viro
... 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>
2011-07-17hppfs: fix dentry leakAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-17cramfs: get_cramfs_inode() returns ERR_PTR() on failureAl Viro
... and we want to report these failures in ->lookup() anyway. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-17ufs should use d_splice_alias()Al Viro
it's NFS-exportable, so... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-17fix exofs ->get_parent()Al Viro
NULL is not a possible return value for that method, TYVM... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-17Merge 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] 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
2011-07-16ceph analog of cifs build_path_from_dentry() race fixAl Viro
... unfortunately, cifs bug got copied. Fix is essentially the same. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-16cifs: build_path_from_dentry() race fixAl Viro
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>
2011-07-15Merge branch 'for-linus' of ↵Linus Torvalds
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()
2011-07-14fix loop checks in d_materialise_unique()Al Viro
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>
2011-07-14Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixesLinus Torvalds
* 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
2011-07-14GFS2: Resolve inode eviction and ail list interaction bugSteven Whitehouse
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>
2011-07-13Merge 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: 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
2011-07-12Merge commit 'v3.0-rc7' into android-3.0Colin Cross
2011-07-12Fix ->d_lock locking order in unlazy_walk()Al Viro
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>
2011-07-12[CIFS] update cifs to version 1.74Steve French
Signed-off-by: Steve French <sfrench@us.ibm.com>
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