summaryrefslogtreecommitdiff
path: root/fs
AgeCommit message (Collapse)AuthorFilesLines
2009-01-14[CVE-2009-0029] System call wrappers part 30Heiko Carstens3-15/+16
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 29Heiko Carstens2-13/+13
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 28Heiko Carstens2-5/+4
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 27Heiko Carstens3-4/+4
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 23Heiko Carstens2-13/+13
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 21Heiko Carstens1-2/+4
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 20Heiko Carstens5-12/+14
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 19Heiko Carstens2-6/+7
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 17Heiko Carstens1-9/+7
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 16Heiko Carstens5-17/+17
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 15Heiko Carstens4-9/+10
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 14Heiko Carstens3-7/+7
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 13Heiko Carstens1-4/+3
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 12Heiko Carstens1-25/+21
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 11Heiko Carstens3-10/+14
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 10Heiko Carstens4-14/+11
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 09Heiko Carstens1-3/+3
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrapper special casesHeiko Carstens4-13/+74
System calls with an unsigned long long argument can't be converted with the standard wrappers since that would include a cast to long, which in turn means that we would lose the upper 32 bit on 32 bit architectures. Also semctl can't use the standard wrapper since it has a 'union' parameter. So we handle them as special case and add some extra wrappers instead. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] Make sys_pselect7 staticHeiko Carstens2-7/+7
Not a single architecture has wired up sys_pselect7 plus it is the only system call with seven parameters. Just make it static and rename it to do_pselect which will do the work for sys_pselect6. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] Remove __attribute__((weak)) from sys_pipe/sys_pipe2Heiko Carstens1-2/+2
Remove __attribute__((weak)) from common code sys_pipe implemantation. IA64, ALPHA, SUPERH (32bit) and SPARC (32bit) have own implemantations with the same name. Just rename them. For sys_pipe2 there is no architecture specific implementation. Cc: Richard Henderson <rth@twiddle.net> Cc: David S. Miller <davem@davemloft.net> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Tony Luck <tony.luck@intel.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] Rename old_readdir to sys_old_readdirHeiko Carstens1-1/+1
This way it matches the generic system call name convention. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] Convert all system calls to return a longHeiko Carstens2-15/+15
Convert all system calls to return a long. This should be a NOP since all converted types should have the same size anyway. With the exception of sys_exit_group which returned void. But that doesn't matter since the system call doesn't return. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14Fix timeouts in sys_pselect7Bernd Schmidt1-1/+1
Since we (Analog Devices) updated our Blackfin kernel to 2.6.28, we've seen occasional 5-second hangs from telnet. telnetd calls select with a NULL timeout, but with the new kernel, the system call occasionally returns 0, which causes telnet to call sleep (5). This did not happen with earlier kernels. The code in sys_pselect7 looks a bit strange, in particular the variable "to" is initialized to NULL, then changed if a non-null timeout was passed in, but not used further. It needs to be passed to core_sys_select instead of &end_time. This bug was introduced by 8ff3e8e85fa6c312051134b3953e397feb639f51 ("select: switch select() and poll() over to hrtimers"). Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com> Reviewed-by: Ulrich Drepper <drepper@redhat.com> Tested-by: Robin Getz <rgetz@blackfin.uclinux.org> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-13Merge branch 'for-linus' of ↵Linus Torvalds5-379/+357
git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm: dlm: change rsbtbl rwlock to spinlock dlm: fix seq_file usage in debugfs lock dump
2009-01-10btrfs: fix for write_super_lockfs/unlockfs error handlingLinus Torvalds1-4/+6
Commit c4be0c1dc4cdc37b175579be1460f15ac6495e9a added the ability for write_super_lockfs to return errors, and renamed them to match. But btrfs didn't get converted. Do the minimal conversion to make it compile again. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-10filesystem freeze: remove XFS specific ioctl interfaces for freeze featureTakashi Sato3-19/+2
It removes XFS specific ioctl interfaces and request codes for freeze feature. This patch has been supplied by David Chinner. Signed-off-by: Dave Chinner <dgc@sgi.com> Signed-off-by: Takashi Sato <t-sato@yk.jp.nec.com> Cc: Dave Chinner <david@fromorbit.com> Cc: <xfs-masters@oss.sgi.com> Cc: <linux-ext4@vger.kernel.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Kleikamp <shaggy@austin.ibm.com> Cc: Alasdair G Kergon <agk@redhat.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>
2009-01-10filesystem freeze: implement generic freeze featureTakashi Sato3-9/+113
The ioctls for the generic freeze feature are below. o Freeze the filesystem int ioctl(int fd, int FIFREEZE, arg) fd: The file descriptor of the mountpoint FIFREEZE: request code for the freeze arg: Ignored Return value: 0 if the operation succeeds. Otherwise, -1 o Unfreeze the filesystem int ioctl(int fd, int FITHAW, arg) fd: The file descriptor of the mountpoint FITHAW: request code for unfreeze arg: Ignored Return value: 0 if the operation succeeds. Otherwise, -1 Error number: If the filesystem has already been unfrozen, errno is set to EINVAL. [akpm@linux-foundation.org: fix CONFIG_BLOCK=n] Signed-off-by: Takashi Sato <t-sato@yk.jp.nec.com> Signed-off-by: Masayuki Hamaguchi <m-hamaguchi@ys.jp.nec.com> Cc: <xfs-masters@oss.sgi.com> Cc: <linux-ext4@vger.kernel.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Kleikamp <shaggy@austin.ibm.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Alasdair G Kergon <agk@redhat.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>
2009-01-10filesystem freeze: add error handling of write_super_lockfs/unlockfsTakashi Sato9-58/+97
Currently, ext3 in mainline Linux doesn't have the freeze feature which suspends write requests. So, we cannot take a backup which keeps the filesystem's consistency with the storage device's features (snapshot and replication) while it is mounted. In many case, a commercial filesystem (e.g. VxFS) has the freeze feature and it would be used to get the consistent backup. If Linux's standard filesystem ext3 has the freeze feature, we can do it without a commercial filesystem. So I have implemented the ioctls of the freeze feature. I think we can take the consistent backup with the following steps. 1. Freeze the filesystem with the freeze ioctl. 2. Separate the replication volume or create the snapshot with the storage device's feature. 3. Unfreeze the filesystem with the unfreeze ioctl. 4. Take the backup from the separated replication volume or the snapshot. This patch: VFS: Changed the type of write_super_lockfs and unlockfs from "void" to "int" so that they can return an error. Rename write_super_lockfs and unlockfs of the super block operation freeze_fs and unfreeze_fs to avoid a confusion. ext3, ext4, xfs, gfs2, jfs: Changed the type of write_super_lockfs and unlockfs from "void" to "int" so that write_super_lockfs returns an error if needed, and unlockfs always returns 0. reiserfs: Changed the type of write_super_lockfs and unlockfs from "void" to "int" so that they always return 0 (success) to keep a current behavior. Signed-off-by: Takashi Sato <t-sato@yk.jp.nec.com> Signed-off-by: Masayuki Hamaguchi <m-hamaguchi@ys.jp.nec.com> Cc: <xfs-masters@oss.sgi.com> Cc: <linux-ext4@vger.kernel.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Kleikamp <shaggy@austin.ibm.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Alasdair G Kergon <agk@redhat.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>
2009-01-10CORE_DUMP_DEFAULT_ELF_HEADERS depends on ELF_COREDavid Brownell1-1/+1
Kernels that don't support ELF coredumps at all surely can't be supporting new partial-segment flavored ELF coredumps ... don't make folk answer Kconfig questions about that flavor. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/arjan/linux-2.6-async-2Linus Torvalds1-12/+7
* git://git.kernel.org/pub/scm/linux/kernel/git/arjan/linux-2.6-async-2: async: make async a command line option for now partial revert of asynchronous inode delete
2009-01-10Merge git://git.infradead.org/mtd-2.6Linus Torvalds1-3/+0
* git://git.infradead.org/mtd-2.6: [JFFS2] remove junk prototypes
2009-01-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linusLinus Torvalds18-0/+3569
* git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus: MAINTAINERS: squashfs entry Squashfs: documentation Squashfs: initrd support Squashfs: Kconfig entry Squashfs: Makefiles Squashfs: header files Squashfs: block operations Squashfs: cache operations Squashfs: uid/gid lookup operations Squashfs: fragment block operations Squashfs: export operations Squashfs: super block operations Squashfs: symlink operations Squashfs: regular file operations Squashfs: directory readdir operations Squashfs: directory lookup operations Squashfs: inode operations
2009-01-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-nommuLinus Torvalds7-140/+149
* git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-nommu: NOMMU: Support XIP on initramfs NOMMU: Teach kobjsize() about VMA regions. FLAT: Don't attempt to expand the userspace stack to fill the space allocated FDPIC: Don't attempt to expand the userspace stack to fill the space allocated NOMMU: Improve procfs output using per-MM VMAs NOMMU: Make mmap allocation page trimming behaviour configurable. NOMMU: Make VMAs per MM as for MMU-mode linux NOMMU: Delete askedalloc and realalloc variables NOMMU: Rename ARM's struct vm_region NOMMU: Fix cleanup handling in ramfs_nommu_get_umapped_area()
2009-01-10partial revert of asynchronous inode deleteArjan van de Ven1-12/+7
let the core of this one bake in -next as well, but leave some of the infrastructure in place. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
2009-01-10[JFFS2] remove junk prototypesArtem Bityutskiy1-3/+0
'rb_prev()', 'rb_next()' and 'rb_replace_node()' are declared in include/linux/rbtree.h, no need for JFFS2 to re-declare them. I believe these are left-overs from the old days when the common RB tree code did not have those call and JFFS2 had private implementation. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-01-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstableLinus Torvalds57-0/+42403
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (864 commits) Btrfs: explicitly mark the tree log root for writeback Btrfs: Drop the hardware crc32c asm code Btrfs: Add Documentation/filesystem/btrfs.txt, remove old COPYING Btrfs: kmap_atomic(KM_USER0) is safe for btrfs_readpage_end_io_hook Btrfs: Don't use kmap_atomic(..., KM_IRQ0) during checksum verifies Btrfs: tree logging checksum fixes Btrfs: don't change file extent's ram_bytes in btrfs_drop_extents Btrfs: Use btrfs_join_transaction to avoid deadlocks during snapshot creation Btrfs: drop remaining LINUX_KERNEL_VERSION checks and compat code Btrfs: drop EXPORT symbols from extent_io.c Btrfs: Fix checkpatch.pl warnings Btrfs: Fix free block discard calls down to the block layer Btrfs: avoid orphan inode caused by log replay Btrfs: avoid potential super block corruption Btrfs: do not call kfree if kmalloc failed in btrfs_sysfs_add_super Btrfs: fix a memory leak in btrfs_get_sb Btrfs: Fix typo in clear_state_cb Btrfs: Fix memset length in btrfs_file_write Btrfs: update directory's size when creating subvol/snapshot Btrfs: add permission checks to the ioctls ...
2009-01-09Merge branch 'for-2.6.29' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds1-0/+1
* 'for-2.6.29' of git://git.kernel.dk/linux-2.6-block: block: fix bug in ptbl lookup cache
2009-01-09block: fix bug in ptbl lookup cacheNeil Brown1-0/+1
Neil writes: Hi Jens, I've found a little bug for you. It was introduced by a6f23657d3072bde6844055bbc2290e497f33fbc block: add one-hit cache for disk partition lookup and has the effect of killing my machine whenever I try to assemble an md array :-( One of the devices in the array has partitions, and mdadm always deletes partitions before putting a whole-device in an array (as it can cause confusion). The next IO to that device locks the machine. I don't really understand exactly why it locks up, but it happens in disk_map_sector_rcu(). This patch fixes it. Which is due to a missing clear of the (now) stale partition lookup data. So clear that when we delete a partition. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-01-09Merge git://git.infradead.org/mtd-2.6Linus Torvalds2-58/+67
* git://git.infradead.org/mtd-2.6: (67 commits) [MTD] [MAPS] Fix printk format warning in nettel.c [MTD] [NAND] add cmdline parsing (mtdparts=) support to cafe_nand [MTD] CFI: remove major/minor version check for command set 0x0002 [MTD] [NAND] ndfc driver [MTD] [TESTS] Fix some size_t printk format warnings [MTD] LPDDR Makefile and KConfig [MTD] LPDDR extended physmap driver to support LPDDR flash [MTD] LPDDR added new pfow_base parameter [MTD] LPDDR Command set driver [MTD] LPDDR PFOW definition [MTD] LPDDR QINFO records definitions [MTD] LPDDR qinfo probing. [MTD] [NAND] pxa3xx: convert from ns to clock ticks more accurately [MTD] [NAND] pxa3xx: fix non-page-aligned reads [MTD] [NAND] fix nandsim sched.h references [MTD] [NAND] alauda: use USB API functions rather than constants [MTD] struct device - replace bus_id with dev_name(), dev_set_name() [MTD] fix m25p80 64-bit divisions [MTD] fix dataflash 64-bit divisions [MTD] [NAND] Set the fsl elbc ECCM according the settings in bootloader. ... Fixed up trivial debug conflicts in drivers/mtd/devices/{m25p80.c,mtd_dataflash.c}
2009-01-09Btrfs: explicitly mark the tree log root for writebackChris Mason1-0/+13
Each subvolume has an extent_state_tree used to mark metadata that needs to be sent to disk while syncing the tree. This is used in addition to the dirty bits on the pages themselves so that a single subvolume can be sent to disk efficiently in disk order. Normally this marking happens in btrfs_alloc_free_block, which also does special recording of dirty tree blocks for the tree log roots. Yan Zheng noticed that when the root of the log tree is allocated, it is added to the wrong writeback list. The fix used here is to explicitly set it dirty as part of tree log creation. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2009-01-09Merge branch 'for_linus' of ↵Linus Torvalds32-1279/+2131
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (57 commits) jbd2: Fix oops in jbd2_journal_init_inode() on corrupted fs ext4: Remove "extents" mount option block: Add Kconfig help which notes that ext4 needs CONFIG_LBD ext4: Make printk's consistently prefixed with "EXT4-fs: " ext4: Add sanity checks for the superblock before mounting the filesystem ext4: Add mount option to set kjournald's I/O priority jbd2: Submit writes to the journal using WRITE_SYNC jbd2: Add pid and journal device name to the "kjournald2 starting" message ext4: Add markers for better debuggability ext4: Remove code to create the journal inode ext4: provide function to release metadata pages under memory pressure ext3: provide function to release metadata pages under memory pressure add releasepage hooks to block devices which can be used by file systems ext4: Fix s_dirty_blocks_counter if block allocation failed with nodelalloc ext4: Init the complete page while building buddy cache ext4: Don't allow new groups to be added during block allocation ext4: mark the blocks/inode bitmap beyond end of group as used ext4: Use new buffer_head flag to check uninit group bitmaps initialization ext4: Fix the race between read_inode_bitmap() and ext4_new_inode() ext4: code cleanup ...
2009-01-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds1-14/+22
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (45 commits) [SCSI] qla2xxx: Update version number to 8.03.00-k1. [SCSI] qla2xxx: Add ISP81XX support. [SCSI] qla2xxx: Use proper request/response queues with MQ instantiations. [SCSI] qla2xxx: Correct MQ-chain information retrieval during a firmware dump. [SCSI] qla2xxx: Collapse EFT/FCE copy procedures during a firmware dump. [SCSI] qla2xxx: Don't pollute kernel logs with ZIO/RIO status messages. [SCSI] qla2xxx: Don't fallback to interrupt-polling during re-initialization with MSI-X enabled. [SCSI] qla2xxx: Remove support for reading/writing HW-event-log. [SCSI] cxgb3i: add missing include [SCSI] scsi_lib: fix DID_RESET status problems [SCSI] fc transport: restore missing dev_loss_tmo callback to LLDD [SCSI] aha152x_cs: Fix regression that keeps driver from using shared interrupts [SCSI] sd: Correctly handle 6-byte commands with DIX [SCSI] sd: DIF: Fix tagging on platforms with signed char [SCSI] sd: DIF: Show app tag on error [SCSI] Fix error handling for DIF/DIX [SCSI] scsi_lib: don't decrement busy counters when inserting commands [SCSI] libsas: fix test for negative unsigned and typos [SCSI] a2091, gvp11: kill warn_unused_result warnings [SCSI] fusion: Move a dereference below a NULL test ... Fixed up trivial conflict due to moving the async part of sd_probe around in the async probes vs using dev_set_name() in naming.
2009-01-09Merge branch 'for-linus' of git://neil.brown.name/mdLinus Torvalds1-0/+14
* 'for-linus' of git://neil.brown.name/md: md: don't retry recovery of raid1 that fails due to error on source drive. md: Allow md devices to be created by name. md: make devices disappear when they are no longer needed. md: centralise all freeing of an 'mddev' in 'md_free' md: move allocation of ->queue from mddev_find to md_probe md: need another print_sb for mdp_superblock_1 md: use list_for_each_entry macro directly md: raid0: make hash_spacing and preshift sector-based. md: raid0: Represent the size of strip zones in sectors. md: raid0 create_strip_zones(): Add KERN_INFO/KERN_ERR to printk's. md: raid0 create_strip_zones(): Make two local variables sector-based. md: raid0: Represent zone->zone_offset in sectors. md: raid0: Represent device offset in sectors. md: raid0_make_request(): Replace local variable block by sector. md: raid0_make_request(): Remove local variable chunk_size. md: raid0_make_request(): Replace chunksize_bits by chunksect_bits. md: use sysfs_notify_dirent to notify changes to md/sync_action. md: fix bitmap-on-external-file bug.
2009-01-09md: make devices disappear when they are no longer needed.NeilBrown1-0/+14
Currently md devices, once created, never disappear until the module is unloaded. This is essentially because the gendisk holds a reference to the mddev, and the mddev holds a reference to the gendisk, this a circular reference. If we drop the reference from mddev to gendisk, then we need to ensure that the mddev is destroyed when the gendisk is destroyed. However it is not possible to hook into the gendisk destruction process to enable this. So we drop the reference from the gendisk to the mddev and destroy the gendisk when the mddev gets destroyed. However this has a complication. Between the call __blkdev_get->get_gendisk->kobj_lookup->md_probe and the call __blkdev_get->md_open there is no obvious way to hold a reference on the mddev any more, so unless something is done, it will disappear and gendisk will be destroyed prematurely. Also, once we decide to destroy the mddev, there will be an unlockable moment before the gendisk is unlinked (blk_unregister_region) during which a new reference to the gendisk can be created. We need to ensure that this reference can not be used. i.e. the ->open must fail. So: 1/ in md_probe we set a flag in the mddev (hold_active) which indicates that the array should be treated as active, even though there are no references, and no appearance of activity. This is cleared by md_release when the device is closed if it is no longer needed. This ensures that the gendisk will survive between md_probe and md_open. 2/ In md_open we check if the mddev we expect to open matches the gendisk that we did open. If there is a mismatch we return -ERESTARTSYS and modify __blkdev_get to retry from the top in that case. In the -ERESTARTSYS sys case we make sure to wait until the old gendisk (that we succeeded in opening) is really gone so we loop at most once. Some udev configurations will always open an md device when it first appears. If we allow an md device that was just created by an open to disappear on an immediate close, then this can race with such udev configurations and result in an infinite loop the device being opened and closed, then re-open due to the 'ADD' even from the first open, and then close and so on. So we make sure an md device, once created by an open, remains active at least until some md 'ioctl' has been made on it. This means that all normal usage of md devices will allow them to disappear promptly when not needed, but the worst that an incorrect usage will do it cause an inactive md device to be left in existence (it can easily be removed). As an array can be stopped by writing to a sysfs attribute echo clear > /sys/block/mdXXX/md/array_state we need to use scheduled work for deleting the gendisk and other kobjects. This allows us to wait for any pending gendisk deletion to complete by simply calling flush_scheduled_work(). Signed-off-by: NeilBrown <neilb@suse.de>
2009-01-09dlm: change rsbtbl rwlock to spinlockDavid Teigland5-32/+32
The rwlock is almost always used in write mode, so there's no reason to not use a spinlock instead. Signed-off-by: David Teigland <teigland@redhat.com>
2009-01-09dlm: fix seq_file usage in debugfs lock dumpDavid Teigland1-359/+337
The old code would leak iterators and leave reference counts on rsbs because it was ignoring the "stop" seq callback. The code followed an example that used the seq operations differently. This new code is based on actually understanding how the seq operations work. It also improves things by saving the hash bucket in the position to avoid cycling through completed buckets in start. Siged-off-by: Davd Teigland <teigland@redhat.com>
2009-01-08fix similar typos to successfullColy Li2-3/+3
When I review ocfs2 code, find there are 2 typos to "successfull". After doing grep "successfull " in kernel tree, 22 typos found totally -- great minds always think alike :) This patch fixes all the similar typos. Thanks for Randy's ack and comments. Signed-off-by: Coly Li <coyli@suse.de> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Roland Dreier <rolandd@cisco.com> Cc: Jeremy Kerr <jk@ozlabs.org> Cc: Jeff Garzik <jeff@garzik.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Vlad Yasevich <vladislav.yasevich@hp.com> Cc: Sridhar Samudrala <sri@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08generic swap(): dcache: use swap() instead of private do_switch()Wu Fengguang1-9/+5
Use the new generic implementation. Signed-off-by: Wu Fengguang <fengguang.wu@intel.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>
2009-01-08generic swap(): ext4: remove local swap() macroWu Fengguang1-4/+0
Use the new generic implementation. Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-08generic swap(): ext3: remove local swap() macroWu Fengguang1-4/+0
Use the new generic implementation. Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>