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| * [XFS] don't call xfs_freesb from xfs_mountfs failure caseChristoph Hellwig2008-07-281-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | Freeing of the superblock is already handled in the caller, and that is more symmetric with the mount path, too. SGI-PV: 981951 SGI-Modid: xfs-linux-melb:xfs-kern:31192a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * [XFS] merge xfs_mount into xfs_fs_fill_superChristoph Hellwig2008-07-283-376/+355
| | | | | | | | | | | | | | | | | | | | | | | | | | xfs_mount is already pretty linux-specific so merge it into xfs_fs_fill_super to allow for a more structured mount code in the next patches. xfs_start_flags and xfs_finish_flags also move to xfs_super.c. SGI-PV: 981951 SGI-Modid: xfs-linux-melb:xfs-kern:31189a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * [XFS] merge xfs_unmount into xfs_fs_put_super / xfs_fs_fill_superChristoph Hellwig2008-07-283-92/+67
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | xfs_unmount is small and already pretty Linux specific, so merge it into the callers. The real unmount path is simplified a little by doing a WARN_ON on the xfs_unmount_flush retval directly instead of propagating the error back to the caller, and the mout failure case in simplified significantly by removing the forced shutdown case and all the dmapi events that shouldn't be sent because the dmapi mount event hasn't been sent by that time either. SGI-PV: 981951 SGI-Modid: xfs-linux-melb:xfs-kern:31188a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * [XFS] kill xfs_igrow_start and xfs_igrow_finishChristoph Hellwig2008-07-283-67/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | xfs_igrow_start just expands to xfs_zero_eof with two asserts that are useless in the context of the only caller and some rather confusing comments. xfs_igrow_finish is just a few lines of code decorated again with useless asserts and confusing comments. Just kill those two and merge them into xfs_setattr. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31186a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * [XFS] merge xfs_mntupdate into xfs_fs_remountChristoph Hellwig2008-07-283-28/+21
| | | | | | | | | | | | | | | | | | | | | | | | xfs_mntupdate already is completely Linux specific due to the VFS flags passed in, so it might aswell be merged into xfs_fs_remount. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31185a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * [XFS] kill xfs_uuid_unmountChristoph Hellwig2008-07-281-13/+2
| | | | | | | | | | | | | | | | | | | | | | Quite useless wrapper that doesn't help making the code more readable. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31184a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * [XFS] Update valid fields in xfs_mount_log_sb()David Chinner2008-07-281-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | Recent changes to update the version number during mount (attr2 stuff) failed to change the assert that checked for calid flags being changed on mount. Clearly this path hasn't been exercised by the test code.... SGI-PV: 981950 SGI-Modid: xfs-linux-melb:xfs-kern:31183a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * [XFS] Kill attr_capable checks as already done in xattr_permission.Christoph Hellwig2008-07-283-55/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | No need for addition permission checks in the xattr handler, fs/xattr.c:xattr_permission() already does them, and in fact slightly more strict then what was in the attr_capable handlers. SGI-PV: 981809 SGI-Modid: xfs-linux-melb:xfs-kern:31164a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tim Shimmin <tes@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * [XFS] Convert l_flushsema to a sv_tMatthew Wilcox2008-07-282-20/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The l_flushsema doesn't exactly have completion semantics, nor mutex semantics. It's used as a list of tasks which are waiting to be notified that a flush has completed. It was also being used in a way that was potentially racy, depending on the semaphore implementation. By using a sv_t instead of a semaphore we avoid the need for a separate counter, since we know we just need to wake everything on the queue. Original waitqueue implementation from Matthew Wilcox. Cleanup and conversion to sv_t by Christoph Hellwig. SGI-PV: 981507 SGI-Modid: xfs-linux-melb:xfs-kern:31059a Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * [XFS] Ensure that 2 GiB xfs logs work properly.Michael Nishimoto2008-07-281-6/+10
| | | | | | | | | | | | | | | | | | | | | | | | We found this while experimenting with 2GiB xfs logs. The previous code never assumed that xfs logs would ever get so large. SGI-PV: 981502 SGI-Modid: xfs-linux-melb:xfs-kern:31058a Signed-off-by: Michael Nishimoto <miken@agami.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * [XFS] Remove unused wbc parameter from xfs_start_page_writeback()Denys Vlasenko2008-07-281-3/+2
| | | | | | | | | | | | | | | | | | SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31057a Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * [XFS] Remove unused Falgs parameter from xfs_qm_dqpurge()Denys Vlasenko2008-07-283-4/+3
| | | | | | | | | | | | | | | | | | SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31056a Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * [XFS] Remove unused arg from kmem_free()Denys Vlasenko2008-07-2831-138/+122
| | | | | | | | | | | | | | | | | | | | | | | | | | | | kmem_free() function takes (ptr, size) arguments but doesn't actually use second one. This patch removes size argument from all callsites. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31050a Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * [XFS] Fix up noattr2 so that it will properly update the versionnum andTim Shimmin2008-07-286-2/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | features2 fields. Previously, mounting with noattr2 failed to achieve anything because although it cleared the attr2 mount flag, it would set it again as soon as it processed the superblock fields. The fix now has an explicit noattr2 flag and uses it later to fix up the versionnum and features2 fields. SGI-PV: 980021 SGI-Modid: xfs-linux-melb:xfs-kern:31003a Signed-off-by: Tim Shimmin <tes@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * [XFS] Split xfs_dir2_leafn_lookup_int into its two pieces of functionalityBarry Naujok2008-07-281-156/+202
| | | | | | | | | | | | | | | | | | SGI-PV: 976035 SGI-Modid: xfs-linux-melb:xfs-kern:30834a Signed-off-by: Barry Naujok <bnaujok@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* | Merge branch 'upstream-linus' of ↵Linus Torvalds2008-08-0110-98/+367
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2 * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: [PATCH] ocfs2: Release mutex in error handling code [PATCH] ocfs2: Fix oops when racing files truncates with writes into an mmap region [PATCH 2/2] ocfs2: Fix race between mount and recovery [PATCH 1/2] ocfs2: Add counter in struct ocfs2_dinode to track journal replays [PATCH] configfs: Convenience macros for attribute definition. [PATCH] configfs: Pin configfs subsystems separately from new config_items. [PATCH] configfs: Fix open directory making rmdir() fail [PATCH] configfs: Lock new directory inodes before removing on cleanup after failure [PATCH] configfs: Prevent userspace from creating new entries under attaching directories [PATCH] configfs: Fix failing symlink() making rmdir() fail [PATCH] configfs: Fix symlink() to a removing item [PATCH] configfs: Include linux/err.h in linux/configfs.h
| * | [PATCH] ocfs2: Release mutex in error handling codeJulia Lawall2008-07-311-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The mutex is released on a successful return, so it would seem that it should be released on an error return as well. The semantic patch finds this problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ expression l; @@ mutex_lock(l); ... when != mutex_unlock(l) when any when strict ( if (...) { ... when != mutex_unlock(l) + mutex_unlock(l); return ...; } | mutex_unlock(l); ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
| * | [PATCH] ocfs2: Fix oops when racing files truncates with writes into an mmap ↵Sunil Mushran2008-07-311-12/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | region This patch fixes an oops that is reproduced when one races writes to a mmap-ed region with another process truncating the file. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
| * | [PATCH 2/2] ocfs2: Fix race between mount and recoverySunil Mushran2008-07-314-42/+148
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As the fs recovery is asynchronous, there is a small chance that another node can mount (and thus recover) the slot before the recovery thread gets to it. If this happens, the recovery thread will block indefinitely on the journal/slot lock as that lock will be held for the duration of the mount (by design) by the node assigned to that slot. The solution implemented is to keep track of the journal replays using a recovery generation in the journal inode, which will be incremented by the thread replaying that journal. The recovery thread, before attempting the blocking lock on the journal/slot lock, will compare the generation on disk with what it has cached and skip recovery if it does not match. This bug appears to have been inadvertently introduced during the mount/umount vote removal by mainline commit 34d024f84345807bf44163fac84e921513dde323. In the mount voting scheme, the messaging would indirectly indicate that the slot was being recovered. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
| * | [PATCH 1/2] ocfs2: Add counter in struct ocfs2_dinode to track journal replaysSunil Mushran2008-07-311-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | This patch renames the ij_pad to ij_recovery_generation in struct ocfs2_dinode. This will be used to keep count of journal replays after an unclean shutdown. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
| * | [PATCH] configfs: Pin configfs subsystems separately from new config_items.Joel Becker2008-07-311-9/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | configfs_mkdir() creates a new item by calling its parent's ->make_item/group() functions. Once that object is created, configfs_mkdir() calls try_module_get() on the new item's module. If it succeeds, the module owning the new item cannot be unloaded, and configfs is safe to reference the item. If the item and the subsystem it belongs to are part of the same module, the subsystem is also pinned. This is the common case. However, if the subsystem is made up of multiple modules, this may not pin the subsystem. Thus, it would be possible to unload the toplevel subsystem module while there is still a child item. Thus, we now try_module_get() the subsystem's module. This only really affects children of the toplevel subsystem group. Deeper children already have their parents pinned. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
| * | [PATCH] configfs: Fix open directory making rmdir() failLouis Rilling2008-07-311-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When checking for user-created elements under an item to be removed by rmdir(), configfs_detach_prep() counts fake configfs_dirents created by dir_open() as user-created and fails when finding one. It is however perfectly valid to remove a directory that is open. Simply make configfs_detach_prep() skip fake configfs_dirent, like it already does for attributes, and like detach_groups() does. Signed-off-by: Louis Rilling <louis.rilling@kerlabs.com> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
| * | [PATCH] configfs: Lock new directory inodes before removing on cleanup after ↵Louis Rilling2008-07-311-19/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | failure Once a new configfs directory is created by configfs_attach_item() or configfs_attach_group(), a failure in the remaining initialization steps leads to removing a directory which inode the VFS may have already accessed. This commit adds the necessary inode locking to safely remove configfs directories while cleaning up after a failure. As an advantage, the locking rules of populate_groups() and detach_groups() become the same: the caller must have the group's inode mutex locked. Signed-off-by: Louis Rilling <louis.rilling@kerlabs.com> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
| * | [PATCH] configfs: Prevent userspace from creating new entries under ↵Louis Rilling2008-07-313-5/+103
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | attaching directories process 1: process 2: configfs_mkdir("A") attach_group("A") attach_item("A") d_instantiate("A") populate_groups("A") mutex_lock("A") attach_group("A/B") attach_item("A") d_instantiate("A/B") mkdir("A/B/C") do_path_lookup("A/B/C", LOOKUP_PARENT) ok lookup_create("A/B/C") mutex_lock("A/B") ok configfs_mkdir("A/B/C") ok attach_group("A/C") attach_item("A/C") d_instantiate("A/C") populate_groups("A/C") mutex_lock("A/C") attach_group("A/C/D") attach_item("A/C/D") failure mutex_unlock("A/C") detach_groups("A/C") nothing to do mkdir("A/C/E") do_path_lookup("A/C/E", LOOKUP_PARENT) ok lookup_create("A/C/E") mutex_lock("A/C") ok configfs_mkdir("A/C/E") ok detach_item("A/C") d_delete("A/C") mutex_unlock("A") detach_groups("A") mutex_lock("A/B") detach_group("A/B") detach_groups("A/B") nothing since no _default_ group detach_item("A/B") mutex_unlock("A/B") d_delete("A/B") detach_item("A") d_delete("A") Two bugs: 1/ "A/B/C" and "A/C/E" are created, but never removed while their parent are removed in the end. The same could happen with symlink() instead of mkdir(). 2/ "A" and "A/C" inodes are not locked while detach_item() is called on them, which may probably confuse VFS. This commit fixes 1/, tagging new directories with CONFIGFS_USET_CREATING before building the inode and instantiating the dentry, and validating the whole group+default groups hierarchy in a second pass by clearing CONFIGFS_USET_CREATING. mkdir(), symlink(), lookup(), and dir_open() simply return -ENOENT if called in (or linking to) a directory tagged with CONFIGFS_USET_CREATING. This does not prevent userspace from calling stat() successfuly on such directories, but this prevents userspace from adding (children to | symlinking from/to | read/write attributes of | listing the contents of) not validated items. In other words, userspace will not interact with the subsystem on a new item until the new item creation completes correctly. It was first proposed to re-use CONFIGFS_USET_IN_MKDIR instead of a new flag CONFIGFS_USET_CREATING, but this generated conflicts when checking the target of a new symlink: a valid target directory in the middle of attaching a new user-created child item could be wrongly detected as being attached. 2/ is fixed by next commit. Signed-off-by: Louis Rilling <louis.rilling@kerlabs.com> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
| * | [PATCH] configfs: Fix failing symlink() making rmdir() failLouis Rilling2008-07-313-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On a similar pattern as mkdir() vs rmdir(), a failing symlink() may make rmdir() fail for the symlink's parent and the symlink's target as well. failing symlink() making target's rmdir() fail: process 1: process 2: symlink("A/S" -> "B") allow_link() create_link() attach to "B" links list rmdir("B") detach_prep("B") error because of new link configfs_create_link("A", "S") error (eg -ENOMEM) failing symlink() making parent's rmdir() fail: process 1: process 2: symlink("A/D/S" -> "B") allow_link() create_link() attach to "B" links list configfs_create_link("A/D", "S") make_dirent("A/D", "S") rmdir("A") detach_prep("A") detach_prep("A/D") error because of "S" create("S") error (eg -ENOMEM) We cannot use the same solution as for mkdir() vs rmdir(), since rmdir() on the target cannot wait on the i_mutex of the new symlink's parent without risking a deadlock (with other symlink() or sys_rename()). Instead we define a global mutex protecting all configfs symlinks attachment, so that rmdir() can avoid the races above. Signed-off-by: Louis Rilling <louis.rilling@kerlabs.com> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
| * | [PATCH] configfs: Fix symlink() to a removing itemLouis Rilling2008-07-312-7/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The rule for configfs symlinks is that symlinks always point to valid config_items, and prevent the target from being removed. However, configfs_symlink() only checks that it can grab a reference on the target item, without ensuring that it remains alive until the symlink is correctly attached. This patch makes configfs_symlink() fail whenever the target is being removed, using the CONFIGFS_USET_DROPPING flag set by configfs_detach_prep() and protected by configfs_dirent_lock. This patch introduces a similar (weird?) behavior as with mkdir failures making rmdir fail: if symlink() races with rmdir() of the parent directory (or its youngest user-created ancestor if parent is a default group) or rmdir() of the target directory, and then fails in configfs_create(), this can make the racing rmdir() fail despite the concerned directory having no user-created entry (resp. no symlink pointing to it or one of its default groups) in the end. This behavior is fixed in later patches. Signed-off-by: Louis Rilling <louis.rilling@kerlabs.com> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
| * | [PATCH] configfs: Include linux/err.h in linux/configfs.hJoel Becker2008-07-311-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | We now use PTR_ERR() in the ->make_item() and ->make_group() operations. Folks including configfs.h need err.h. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* | | Merge git://git.infradead.org/mtd-2.6Linus Torvalds2008-08-012-14/+32
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/mtd-2.6: [MTD] [NAND] drivers/mtd/nand/nandsim.c: fix printk warnings [MTD] [NAND] Blackfin NFC Driver: Cleanup the error exit path of bf5xx_nand_probe function [MTD] [NAND] Blackfin NFC Driver: use standard dev_err() rather than printk() [MTD] [NAND] Blackfin NFC Driver: enable Blackfin nand HWECC support by default [MTD] [NAND] Blackfin NFC Driver: add proper devinit/devexit markings to probe/remove functions [MTD] [NAND] Blackfin NFC Driver: add support for the ECC layout the Blackfin bootrom uses [MTD] [NAND] Blackfin NFC Driver: fix bug - hw ecc calc by making sure we extract 11 bits from each register instead of 10 [MTD] [NAND] Blackfin NFC Driver: fix bug - do not clobber the status from the first 256 bytes if operating on 512 pages [MTD] [NAND] diskonchip.c fix sparse endian warnings [MTD] [NAND] drivers/mtd/nand/nandsim.c needs div64.h [JFFS2] Fix allocation of summary buffer Fix rename of at91_nand -> atmel_nand [MTD] [NOR] drivers/mtd/chips/jedec_probe.c: fix Am29DL800BB device ID [MTD] MTD_DEBUG always does compile-time typechecks [MTD] DataFlash: bugfix, binary page sizes now handled [MTD] [NAND] fsl_elbc_nand.c: fix printk warning [MTD] [NAND] nandsim: support random page read command [MTD] [NAND] fix subpage read for small page NAND
| * | | [JFFS2] Fix allocation of summary bufferDavid Woodhouse2008-08-012-14/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We can't use vmalloc for the buffer we use for writing summaries, because some drivers may want to DMA from it. So limit the size to 64KiB and use kmalloc for it instead. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* | | | [PATCH] pass struct path * to do_add_mount()Al Viro2008-08-014-11/+11
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | | [PATCH] switch mtd and dm-table to lookup_bdev()Al Viro2008-08-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | No need to open-code it... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | | [patch 3/4] vfs: remove unused nameidata argument of may_create()Miklos Szeredi2008-08-011-8/+7
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | | [PATCH] devpts: switch to IDAAlexey Dobriyan2008-08-011-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Devpts code wants just numbers for tty indexes. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | | [PATCH 2/2] proc: switch inode number allocation to IDAAlexey Dobriyan2008-08-011-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | proc doesn't use "associate pointer with id" feature of IDR, so switch to IDA. NOTE, NOTE, NOTE: Do not apply if release_inode_number() still mantions MAX_ID_MASK! Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | | [PATCH 1/2] proc: fix inode number bogorithmeticAlexey Dobriyan2008-08-011-12/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Id which proc gets from IDR for inode number and id which proc removes from IDR do not match. E.g. 0x11a transforms into 0x8000011a. Which stayed unnoticed for a long time because, surprise, idr_remove() masks out that high bit before doing anything. All of this due to "| ~MAX_ID_MASK" in release_inode_number(). I still don't understand how it's supposed to work, because "| ~MASK" is not an inversion for "& MAX" operation. So, use just one nice, working addition. Make start offset unsigned int, while I'm at it. It's longness is not used anywhere. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | | [PATCH] fix bdev leak in block_dev.c do_open()Al Viro2008-08-011-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | Callers expect it to drop reference to bdev on all failure exits. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | | [PATCH] fix races and leaks in vfs_quota_on() usersAl Viro2008-08-014-22/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * new helper: vfs_quota_on_path(); equivalent of vfs_quota_on() sans the pathname resolution. * callers of vfs_quota_on() that do their own pathname resolution and checks based on it are switched to vfs_quota_on_path(); that way we avoid the races. * reiserfs leaked dentry/vfsmount references on several failure exits. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | | [PATCH] clean dup2() up a bitAl Viro2008-08-011-26/+27
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | | [PATCH] merge locate_fd() and get_unused_fd()Al Viro2008-08-013-129/+75
| | | | | | | | | | | | | | | | | | | | | | | | | | | | New primitive: alloc_fd(start, flags). get_unused_fd() and get_unused_fd_flags() become wrappers on top of it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | | Re: BUG at security/selinux/avc.c:883 (was: Re: linux-next: TreeStephen Smalley2008-08-011-1/+1
| |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | for July 17: early crash on x86-64) SELinux needs MAY_APPEND to be passed down to the security hook. Otherwise, we get permission denials when only append permission is granted by policy even if the opening process specified O_APPEND. Shows up as a regression in the ltp selinux testsuite, fixed by this patch. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | romfs_readpage: don't report errors for pages beyond i_sizeLinus Torvalds2008-07-301-14/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We zero-fill them like we are supposed to, and that's all fine. It's only an error if the 'romfs_copyfrom()' routine isn't able to fill the data that is supposed to be there. Most of the patch is really just re-organizing the code a bit, and using separate variables for the error value and for how much of the page we actually filled from the filesystem. Reported-and-tested-by: Chris Fester <cfester@wms.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Matt Waddel <matt.waddel@freescale.com> Cc: Greg Ungerer <gerg@snapgear.com> Signed-of-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | fs/buffer.c: uninline __remove_assoc_queue()Thomas Petazzoni2008-07-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Uninline the __remove_assoc_queue() function in fs/buffer.c, called at too many places and too long to really be inlined. Size results: text data bss dec hex filename 1134606 118840 212992 1466438 166046 vmlinux.old 1134303 118840 212992 1466135 165f17 vmlinux -303 0 0 -303 -12F +/- This patch is part of the Linux Tiny project and has been originally written by Matt Mackall <mpm@selenic.com>. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | omfs: sparse annotationsHarvey Harrison2008-07-303-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Missing cpu_to_be64 on some constant assignments. fs/omfs/dir.c:107:16: warning: incorrect type in assignment (different base types) fs/omfs/dir.c:107:16: expected restricted __be64 [usertype] i_sibling fs/omfs/dir.c:107:16: got unsigned long long fs/omfs/file.c:33:13: warning: incorrect type in assignment (different base types) fs/omfs/file.c:33:13: expected restricted __be64 [usertype] e_next fs/omfs/file.c:33:13: got unsigned long long fs/omfs/file.c:36:24: warning: incorrect type in assignment (different base types) fs/omfs/file.c:36:24: expected restricted __be64 [usertype] e_cluster fs/omfs/file.c:36:24: got unsigned long long fs/omfs/file.c:37:23: warning: incorrect type in assignment (different base types) fs/omfs/file.c:37:23: expected restricted __be64 [usertype] e_blocks fs/omfs/file.c:37:23: got unsigned long long fs/omfs/bitmap.c:74:18: warning: incorrect type in argument 2 (different signedness) fs/omfs/bitmap.c:74:18: expected unsigned long volatile *addr fs/omfs/bitmap.c:74:18: got long *<noident> fs/omfs/bitmap.c:77:20: warning: incorrect type in argument 2 (different signedness) fs/omfs/bitmap.c:77:20: expected unsigned long volatile *addr fs/omfs/bitmap.c:77:20: got long *<noident> fs/omfs/bitmap.c:112:17: warning: incorrect type in argument 2 (different signedness) fs/omfs/bitmap.c:112:17: expected unsigned long volatile *addr fs/omfs/bitmap.c:112:17: got long *<noident> Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Acked-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | VFS: increase pseudo-filesystem block size to PAGE_SIZEAlex Nixon2008-07-301-2/+2
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit: commit ba52de123d454b57369f291348266d86f4b35070 Author: Theodore Ts'o <tytso@mit.edu> Date: Wed Sep 27 01:50:49 2006 -0700 [PATCH] inode-diet: Eliminate i_blksize from the inode structure caused the block size used by pseudo-filesystems to decrease from PAGE_SIZE to 1024 leading to a doubling of the number of context switches during a kernbench run. Signed-off-by: Alex Nixon <Alex.Nixon@citrix.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Ian Campbell <Ian.Campbell@eu.citrix.com> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Hugh Dickins <hugh@veritas.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: <stable@kernel.org> [2.6.25.x, 2.6.26.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | eCryptfs: use page_alloc not kmalloc to get a page of memoryEric Sandeen2008-07-281-12/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With SLUB debugging turned on in 2.6.26, I was getting memory corruption when testing eCryptfs. The root cause turned out to be that eCryptfs was doing kmalloc(PAGE_CACHE_SIZE); virt_to_page() and treating that as a nice page-aligned chunk of memory. But at least with SLUB debugging on, this is not always true, and the page we get from virt_to_page does not necessarily match the PAGE_CACHE_SIZE worth of memory we got from kmalloc. My simple testcase was 2 loops doing "rm -f fileX; cp /tmp/fileX ." for 2 different multi-megabyte files. With this change I no longer see the corruption. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Acked-by: Michael Halcrow <mhalcrow@us.ibm.com> Acked-by: Rik van Riel <riel@redhat.com> Cc: <stable@kernel.org> [2.6.25.x, 2.6.26.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | bio-integrity: remove EXPORT_SYMBOL for bio_integrity_init_slab()Yoichi Yuasa2008-07-281-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I got section mismatch message about bio_integrity_init_slab(). WARNING: fs/built-in.o(__ksymtab+0xb60): Section mismatch in reference from the variable __ksymtab_bio_integrity_init_slab to the function .init.text:bio_integrity_init_slab() The symbol bio_integrity_init_slab is exported and annotated __init Fix this by removing the __init annotation of bio_integrity_init_slab or drop the export. It only call from init_bio(). The EXPORT_SYMBOL() can be removed. Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | vfs: pagecache usage optimization for pagesize!=blocksizeHisashi Hifumi2008-07-284-76/+130
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we read some part of a file through pagecache, if there is a pagecache of corresponding index but this page is not uptodate, read IO is issued and this page will be uptodate. I think this is good for pagesize == blocksize environment but there is room for improvement on pagesize != blocksize environment. Because in this case a page can have multiple buffers and even if a page is not uptodate, some buffers can be uptodate. So I suggest that when all buffers which correspond to a part of a file that we want to read are uptodate, use this pagecache and copy data from this pagecache to user buffer even if a page is not uptodate. This can reduce read IO and improve system throughput. I wrote a benchmark program and got result number with this program. This benchmark do: 1: mount and open a test file. 2: create a 512MB file. 3: close a file and umount. 4: mount and again open a test file. 5: pwrite randomly 300000 times on a test file. offset is aligned by IO size(1024bytes). 6: measure time of preading randomly 100000 times on a test file. The result was: 2.6.26 330 sec 2.6.26-patched 226 sec Arch:i386 Filesystem:ext3 Blocksize:1024 bytes Memory: 1GB On ext3/4, a file is written through buffer/block. So random read/write mixed workloads or random read after random write workloads are optimized with this patch under pagesize != blocksize environment. This test result showed this. The benchmark program is as follows: #include <stdio.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <unistd.h> #include <time.h> #include <stdlib.h> #include <string.h> #include <sys/mount.h> #define LEN 1024 #define LOOP 1024*512 /* 512MB */ main(void) { unsigned long i, offset, filesize; int fd; char buf[LEN]; time_t t1, t2; if (mount("/dev/sda1", "/root/test1/", "ext3", 0, 0) < 0) { perror("cannot mount\n"); exit(1); } memset(buf, 0, LEN); fd = open("/root/test1/testfile", O_CREAT|O_RDWR|O_TRUNC); if (fd < 0) { perror("cannot open file\n"); exit(1); } for (i = 0; i < LOOP; i++) write(fd, buf, LEN); close(fd); if (umount("/root/test1/") < 0) { perror("cannot umount\n"); exit(1); } if (mount("/dev/sda1", "/root/test1/", "ext3", 0, 0) < 0) { perror("cannot mount\n"); exit(1); } fd = open("/root/test1/testfile", O_RDWR); if (fd < 0) { perror("cannot open file\n"); exit(1); } filesize = LEN * LOOP; for (i = 0; i < 300000; i++){ offset = (random() % filesize) & (~(LEN - 1)); pwrite(fd, buf, LEN, offset); } printf("start test\n"); time(&t1); for (i = 0; i < 100000; i++){ offset = (random() % filesize) & (~(LEN - 1)); pread(fd, buf, LEN, offset); } time(&t2); printf("%ld sec\n", t2-t1); close(fd); if (umount("/root/test1/") < 0) { perror("cannot umount\n"); exit(1); } } Signed-off-by: Hisashi Hifumi <hifumi.hisashi@oss.ntt.co.jp> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Christoph Hellwig <hch@infradead.org> Cc: Jan Kara <jack@ucw.cz> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | exec: include pagemap.h again to fix buildHugh Dickins2008-07-281-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix compilation errors on avr32 and without CONFIG_SWAP, introduced by ba92a43dbaee339cf5915ef766d3d3ffbaaf103c ("exec: remove some includes") In file included from include/asm/tlb.h:24, from fs/exec.c:55: include/asm-generic/tlb.h: In function 'tlb_flush_mmu': include/asm-generic/tlb.h:76: error: implicit declaration of function 'release_pages' include/asm-generic/tlb.h: In function 'tlb_remove_page': include/asm-generic/tlb.h:105: error: implicit declaration of function 'page_cache_release' make[1]: *** [fs/exec.o] Error 1 This straightforward part-revert is nobody's favourite patch to address the underlying tlb.h needs swap.h needs pagemap.h (but sparc won't like that) mess; but appropriate to fix the build now before any overhaul. Reported-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Reported-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by: Hugh Dickins <hugh@veritas.com> Tested-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2008-07-283-3/+7
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: fix uninitialized variable for search_rsb_list callers dlm: release socket on error dlm: fix basts for granted CW waiting PR/CW dlm: check for null in device_write
| * | dlm: fix uninitialized variable for search_rsb_list callersBenny Halevy2008-07-141-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gcc 4.3.0 correctly emits the following warning. search_rsb_list does not *r_ret if no dlm_rsb is found and _search_rsb may pass the uninitialized value upstream on the error path when both calls to search_rsb_list return non-zero error. The fix sets *r_ret to NULL on search_rsb_list's not-found path. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: David Teigland <teigland@redhat.com>
generated by cgit v1.1 at 2025-02-09 02:18:37 +0000