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path: root/drivers/md/dm-ioctl.c
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* [PATCH] dm: fix find_device raceAlasdair G Kergon2006-11-08
| | | | | | | | | | | | | | | | | | | | There is a race between dev_create() and find_device(). If the mdptr has not yet been stored against a device, find_device() needs to behave as though no device was found. It already returns NULL, but there is a dm_put() missing: it must drop the reference dm_get_md() took. The bug was introduced by dm-fix-mapped-device-ref-counting.patch. It manifests itself if another dm ioctl attempts to reference a newly-created device while the device creation ioctl is still running. The consequence is that the device cannot be removed until the machine is rebooted. Certain udev configurations can lead to this happening. Signed-off-by: Alasdair G Kergon <agk@redhat.com> Cc: <dm-devel@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] devfs: Remove the miscdevice devfs_name field as it's no longer neededGreg Kroah-Hartman2006-06-26
| | | | | | Also fixes all drivers that set this field. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] devfs: Remove the devfs_fs_kernel.h file from the treeGreg Kroah-Hartman2006-06-26
| | | | | | Also fixes up all files that #include it. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] devfs: Remove devfs_remove() function from the kernel treeGreg Kroah-Hartman2006-06-26
| | | | | | Removes the devfs_remove() function and all callers of it. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] devfs: Remove devfs_mk_bdev() function from the kernel treeGreg Kroah-Hartman2006-06-26
| | | | | | Removes the devfs_mk_bdev() function and all callers of it. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] devfs: Remove devfs_mk_dir() function from the kernel treeGreg Kroah-Hartman2006-06-26
| | | | | | Removes the devfs_mk_dir() function and all callers of it. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] dm: improve error message consistencyAlasdair G Kergon2006-06-26
| | | | | | | | | Tidy device-mapper error messages to include context information automatically. Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] dm: prevent removal if openAlasdair G Kergon2006-06-26
| | | | | | | | | | | | | | | | | If you misuse the device-mapper interface (or there's a bug in your userspace tools) it's possible to end up with 'unlinked' mapped devices that cannot be removed until you reboot (along with uninterruptible processes). This patch prevents you from removing a device that is still open. It introduces dm_lock_for_deletion() which is called when a device is about to be removed to ensure that nothing has it open and nothing further can open it. It uses a private open_count for this which also lets us remove one of the problematic bdget_disk() calls elsewhere. Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] dm: consolidate creation functionsAlasdair G Kergon2006-06-26
| | | | | | | | | Merge dm_create() and dm_create_with_minor() by introducing the special value DM_ANY_MINOR to request the allocation of the next available minor number. Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] dm: fix mapped device ref countingJeff Mahoney2006-06-26
| | | | | | | | | | | | | | | | To avoid races, _minor_lock must be held while changing mapped device reference counts. There are a few paths where a mapped_device pointer is returned before a reference is taken. This patch fixes them. [akpm: too late for 2.6.17 - suitable for 2.6.17.x after it has settled] Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] dm store geometryDarrick J. Wong2006-03-27
| | | | | | | | | | | Allow drive geometry to be stored with a new DM_DEV_SET_GEOMETRY ioctl. Device-mapper will now respond to HDIO_GETGEO. If the geometry information is not available, zero will be returned for all of the parameters. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] dm table: store mdMike Anderson2006-03-27
| | | | | | | | | | | | | | | Store an up-pointer to the owning struct mapped_device in every table when it is created. Access it with: struct mapped_device *dm_table_get_md(struct dm_table *t) Tables linked to md must be destroyed before the md itself. Signed-off-by: Mike Anderson <andmike@us.ibm.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] dm: tidy mdptrAlasdair G Kergon2006-03-27
| | | | | | | | Change dm_get_mdptr() to take a struct mapped_device instead of dev_t. Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] device-mapper ioctl: reduce PF_MEMALLOC usageAlasdair G Kergon2006-02-01
| | | | | | | | | | | | Reduce substantially the amount of code using PF_MEMALLOC, as envisaged in the original FIXME. If you're using lvm2, for this patch to work correctly you should update to lvm2 version 2.02.01 or later and device-mapper version 1.02.02 or later. Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Unlinline a bunch of other functionsArjan van de Ven2006-01-14
| | | | | | | | | | | Remove the "inline" keyword from a bunch of big functions in the kernel with the goal of shrinking it by 30kb to 40kb Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] device-mapper ioctl: add skip lock_fs flagAlasdair G Kergon2006-01-06
| | | | | | | | | | | | Add ioctl DM_SKIP_LOCKFS_FLAG for userspace to request that lock_fs is bypassed when suspending a device. There's no change to the behaviour of existing code that doesn't know about the new flag. Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] device-mapper: make lock_fs optionalAlasdair G Kergon2006-01-06
| | | | | | | | | Devices only needs syncing when creating snapshots, so make this optional when suspending a device. Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] device-mapper ioctl: event on renamegoggin, edward2006-01-06
| | | | | | | | | After changing the name of a mapped device, trigger a dm event. (For userspace multipath tools.) Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] device-mapper: list_versions fixAlasdair G Kergon2005-11-22
| | | | | | | | | | | | | | | | | In some circumstances the LIST_VERSIONS output is truncated because the size calculation forgets about a 'uint32_t' in each structure - but the inclusion of the whole of ALIGN_MASK frequently compensates for the omission. This is a quick workaround to use an upper bound. (The code ought to be fixed to supply the actual size.) Running 'dmsetup targets' may demonstrate the problem: when I run it, the last line comes out as 'erro' instead of 'error'. Consequently, 'lvcreate --type error' doesn't work. Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] device-mapper dm-ioctl: missing put in table load error caseKiyoshi Ueda2005-11-22
| | | | | | | | | An error path in table_load() forgets to release a table that won't now be referenced. Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] device-mapper: Trigger an event when a table is deletedgoggin, edward2005-09-28
| | | | | | | | | | | If anything is waiting on a device's table when the device is removed, we must first wake it up so it will release its reference. Otherwise the table's reference count will not drop to zero and the table will not get removed. Signed-Off-By: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] create a kstrdup library functionPaulo Marques2005-06-23
| | | | | | | | | | | | | | | | This patch creates a new kstrdup library function and changes the "local" implementations in several places to use this function. Most of the changes come from the sound and net subsystems. The sound part had already been acknowledged by Takashi Iwai and the net part by David S. Miller. I left UML alone for now because I would need more time to read the code carefully before making changes there. Signed-off-by: Paulo Marques <pmarques@grupopie.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-16
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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