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path: root/fs/btrfs/check-integrity.c
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2012-06-14Btrfs: use rcu to protect device->nameJosef Bacik
Al pointed out that we can just toss out the old name on a device and add a new one arbitrarily, so anybody who uses device->name in printk could possibly use free'd memory. Instead of adding locking around all of this he suggested doing it with RCU, so I've introduced a struct rcu_string that does just that and have gone through and protected all accesses to device->name that aren't under the uuid_mutex with rcu_read_lock(). This protects us and I will use it for dealing with removing the device that we used to mount the file system in a later patch. Thanks, Reviewed-by: David Sterba <dsterba@suse.cz> Signed-off-by: Josef Bacik <josef@redhat.com>
2012-05-30Btrfs: fix false positive in check-integrity on unmountStefan Behrens
During unmount, it could happen that the integrity checker printed a warning message "attempt to free ... on umount which is not yet iodone" which turned out to be a false positive. Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
2012-05-30Btrfs: fix runtime warning in check-integrity check data modeStefan Behrens
If a file_extent_item was located at the very end of a leaf and there was not enough space to hold a full item, but there was enough space to hold one of type BTRFS_FILE_EXTENT_INLINE or PREALLOC, and it was only such a short item, a warning was printed anyway. This check is now fixed. Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
2012-05-11Btrfs: change integrity checker to support big blocksStefan Behrens
The integrity checker used to be coded for nodesize == leafsize == sectorsize == PAGE_CACHE_SIZE. This is now changed to support sizes for nodesize and leafsize which are N * PAGE_CACHE_SIZE. Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
2012-03-20Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree from Jiri Kosina: "It's indeed trivial -- mostly documentation updates and a bunch of typo fixes from Masanari. There are also several linux/version.h include removals from Jesper." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (101 commits) kcore: fix spelling in read_kcore() comment constify struct pci_dev * in obvious cases Revert "char: Fix typo in viotape.c" init: fix wording error in mm_init comment usb: gadget: Kconfig: fix typo for 'different' Revert "power, max8998: Include linux/module.h just once in drivers/power/max8998_charger.c" writeback: fix fn name in writeback_inodes_sb_nr_if_idle() comment header writeback: fix typo in the writeback_control comment Documentation: Fix multiple typo in Documentation tpm_tis: fix tis_lock with respect to RCU Revert "media: Fix typo in mixer_drv.c and hdmi_drv.c" Doc: Update numastat.txt qla4xxx: Add missing spaces to error messages compiler.h: Fix typo security: struct security_operations kerneldoc fix Documentation: broken URL in libata.tmpl Documentation: broken URL in filesystems.tmpl mtd: simplify return logic in do_map_probe() mm: fix comment typo of truncate_inode_pages_range power: bq27x00: Fix typos in comment ...
2012-02-24Btrfs: fix compiler warnings on 32 bit systemsChris Mason
The enospc tracing code added some interesting uses of u64 pointer casts. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2012-02-10BTRFS: Don't include disk-io.h twice in check-integrity.cJesper Juhl
Once should be enough. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-01-26Btrfs: fix warning for 32-bit build of fs/btrfs/check-integrity.cStefan Behrens
There have been 4 warnings on 32-bit build, they are herewith fixed. Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-12-21Btrfs: add optional integrity check codeStefan Behrens
The two files added in this patch contain all the code that is required to implement the integrity checks. Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>