- 26 7月, 2016 35 次提交
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由 Jeff Mahoney 提交于
We use BTRFS_LEAF_DATA_SIZE - sizeof(struct btrfs_item) in several places. This introduces a BTRFS_MAX_ITEM_SIZE macro to do the same. Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Jeff Mahoney 提交于
The function isn't implemented anywhere. Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Jeff Mahoney 提交于
The root parameter for copy_to_sk is not used at all. Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Jeff Mahoney 提交于
We just need a superblock, but we look it up using two different roots depending on the call site. Let's just use a superblock pointer initialized at the outset. This is mostly for Coccinelle not to choke on my root push up set. Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Jeff Mahoney 提交于
Now that we have a dummy fs_info associated with each test that uses a root, we don't need the DUMMY_ROOT bit anymore. This lets us make choices without needing an actual root like in e.g. btrfs_find_create_tree_block. Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Jeff Mahoney 提交于
This allows the upcoming patchset to push nodesize and sectorsize into fs_info. Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Jeff Mahoney 提交于
We have all these stubs that only exist because they're called from btrfs_run_sanity_tests, which is a static inside super.c. Let's just move it all into tests/btrfs-tests.c and only have one stub. Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Jeff Mahoney 提交于
btrfs_test_opt and friends only use the root pointer to access the fs_info. Let's pass the fs_info directly in preparation to eliminate similar patterns all over btrfs. Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Jeff Mahoney 提交于
When using trace events to debug a problem, it's impossible to determine which file system generated a particular event. This patch adds a macro to prefix standard information to the head of a trace event. The extent_state alloc/free events are all that's left without an fs_info available. Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Jeff Mahoney 提交于
In order to provide an fsid for trace events, we'll need a btrfs_fs_info pointer. The most lightweight way to do that for btrfs_work structures is to associate it with the __btrfs_workqueue structure. Each queued btrfs_work structure has a workqueue associated with it, so that's a natural fit. It's a privately defined structures, so we add accessors to retrieve the fs_info pointer. Signed-off-by: NJeff Mahoney <jeffm@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 David Sterba 提交于
The mixed blockgroup reporting has been fixed by commit ae02d1bd "btrfs: fix mixed block count of available space" Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 David Sterba 提交于
Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Nikolay Borisov 提交于
Recently during a crash it became apparent that this particular message can be printed so many times that it causes the softlockup detector to trigger. Fix it by ratelimiting it. Signed-off-by: NNikolay Borisov <kernel@kyup.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Nikolay Borisov 提交于
This patch adds ratelimiting to all messages which are not using the _rl version of the various printing APIs in btrfs. This is designed to be used as a safety net, since a flood messages might cause the softlockup detector to trigger. To reduce interference between different classes of messages use a separate ratelimit state for every class of message. Signed-off-by: NNikolay Borisov <kernel@kyup.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Liu Bo 提交于
Mounting a btrfs can resume previous balance operations asynchronously. An user got a crash when one drive has some corrupt sectors. Since balance can cancel itself in case of any error, we can gracefully return errors to upper layers and let balance do the cancel job. Reported-by: Nsash <master.b.at.raven@chefmail.de> Signed-off-by: NLiu Bo <bo.li.liu@oracle.com> Reviewed-by: NDavid Sterba <dsterba@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Liu Bo 提交于
During build_backref_tree(), if we fail to read a btree node, we can eventually run into BUG_ON(cache->nr_nodes) that we put in backref_cache_cleanup(), meaning we have at least one memory leak. This frees the backref_node that we's allocated at the very beginning of build_backref_tree(). Signed-off-by: NLiu Bo <bo.li.liu@oracle.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Liu Bo 提交于
eb->io_pages is set in read_extent_buffer_pages(). In case of readpage failure, for pages that have been added to bio, it calls bio_endio and later readpage_io_failed_hook() does the work. When this eb's page (couldn't be the 1st page) fails to add itself to bio due to failure in merge_bio(), it cannot decrease eb->io_pages via bio_endio, and ends up with a memory leak eventually. This lets __do_readpage propagate errors to callers and adds the 'atomic_dec(&eb->io_pages)'. Signed-off-by: NLiu Bo <bo.li.liu@oracle.com> Reviewed-by: NDavid Sterba <dsterba@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Liu Bo 提交于
Since it is just an in-memory building of the backrefs of several btree blocks, nothing is fatal other than memory leaks, so this changes BUG_ON()'s to ASSERT()'s. Signed-off-by: NLiu Bo <bo.li.liu@oracle.com> Reviewed-by: NDavid Sterba <dsterba@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Wang Xiaoguang 提交于
In btrfs, btrfs_space_info's bytes_may_use is treated as fs used space, as what we do in reserve_metadata_bytes() or btrfs_alloc_data_chunk_ondemand(), so in dump_space_info(), when calculating free space, we should also subtract btrfs_space_info's bytes_may_use. Signed-off-by: NWang Xiaoguang <wangxg.fnst@cn.fujitsu.com> Reviewed-by: NDavid Sterba <dsterba@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Chandan Rajendra 提交于
btrfs/073 invokes scrub ioctl in a tight loop. In subpage-blocksize scenario this results in a lot of "scrub: size assumption sectorsize != PAGE_SIZE " messages being printed on the console. To reduce the number of such messages this commit uses btrfs_err_rl() instead of btrfs_err(). Signed-off-by: NChandan Rajendra <chandan@linux.vnet.ibm.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Wang Xiaoguang 提交于
Extract cow_file_range() new parameters for both in-band dedupe and subpage sector size patchset. This should make conflict of both patchset to minimal, and reduce the effort needed to rebase them. Cc: Chandan Rajendra <chandan@linux.vnet.ibm.com> Cc: David Sterba <dsterba@suse.cz> Signed-off-by: NWang Xiaoguang <wangxg.fnst@cn.fujitsu.com> Signed-off-by: NQu Wenruo <quwenruo@cn.fujitsu.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Liu Bo 提交于
This is similar to btrfs_submit_compressed_read(), if we fail after bio is allocated, then we can use bio_endio() and errors are saved in bio->bi_error. But please note that we don't return errors to its caller because the caller assumes it won't call endio to cleanup on error. Signed-off-by: NLiu Bo <bo.li.liu@oracle.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Anand Jain 提交于
An inconsistent behavior due to stale reads from the disk was reported mail-archive.com/linux-btrfs@vger.kernel.org/msg54188.html This patch will make sure devices are synced before return in the unmount thread. Signed-off-by: NAnand Jain <anand.jain@oracle.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Anand Jain 提交于
Moves closer to the caller and removes declaration Signed-off-by: NAnand Jain <anand.jain@oracle.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Ashish Samant 提交于
Remove unnecessary checks in compress_file_range(). Signed-off-by: NAshish Samant <ashish.samant@oracle.com> [ minor coding style fixups ] Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Liu Bo 提交于
One can use btrfs-corrupt-block to hit BUG_ON() in merge_bio(), thus this aims to stop anyone to panic the whole system by using their btrfs. Since the error in merge_bio can only come from __btrfs_map_block() when chunk tree mapping has something insane and __btrfs_map_block() has already had printed the reason, we can just return errors in merge_bio. Signed-off-by: NLiu Bo <bo.li.liu@oracle.com> Reviewed-by: NDavid Sterba <dsterba@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Nikolay Borisov 提交于
BTRFS is using a variety of slab caches to satisfy internal needs. Those slab caches are always allocated with the SLAB_RECLAIM_ACCOUNT, meaning allocations from the caches are going to be accounted as SReclaimable. At the same time btrfs is not registering any shrinkers whatsoever, thus preventing memory from the slabs to be shrunk. This means those caches are not in fact reclaimable. To fix this remove the SLAB_RECLAIM_ACCOUNT on all caches apart from the inode cache, since this one is being freed by the generic VFS super_block shrinker. Also set the transaction related caches as SLAB_TEMPORARY, to better document the lifetime of the objects (it just translates to SLAB_RECLAIM_ACCOUNT). Signed-off-by: NNikolay Borisov <n.borisov.lkml@gmail.com> Reviewed-by: NDavid Sterba <dsterba@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Hans van Kranenburg 提交于
BTRFS_IOC_LOGICAL_INO takes a btrfs_ioctl_logical_ino_args as argument, not a btrfs_ioctl_ino_path_args. The lines were probably copy/pasted when the code was written. Since btrfs_ioctl_logical_ino_args and btrfs_ioctl_ino_path_args have the same size, the actual IOCTL definition here does not change. But, it makes the code less confusing for the reader. Signed-off-by: NHans van Kranenburg <hans.van.kranenburg@mendix.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Salah Triki 提交于
size contains the value returned by posix_acl_from_xattr(), which returns -ERANGE, -ENODATA, zero, or an integer greater than zero. So replace -ENOENT by -ERANGE. Signed-off-by: NSalah Triki <salah.triki@gmail.com> Reviewed-by: NDavid Sterba <dsterba@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Nikolay Borisov 提交于
The code flow in btrfs_new_inode allows for btrfs_evict_inode to be called with not fully initialised inode (e.g. ->root member not being set). This can happen when btrfs_set_inode_index in btrfs_new_inode fails, which in turn would call iput for the newly allocated inode. This in turn leads to vfs calling into btrfs_evict_inode. This leads to null pointer dereference. To handle this situation check whether the passed inode has root set and just free it in case it doesn't. Signed-off-by: NNikolay Borisov <kernel@kyup.com> Reviewed-by: NJosef Bacik <jbacik@fb.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Liu Bo 提交于
We use read_node_slot() to read btree node and it has two cases, a) slot is out of range, which means 'no such entry' b) we fail to read the block, due to checksum fails or corrupted content or not with uptodate flag. But we're returning NULL in both cases, this makes it return -ENOENT in case a) and return -EIO in case b), and this fixes its callers as well as btrfs_search_forward() 's caller to catch the new errors. The problem is reported by Peter Becker, and I can manage to hit the same BUG_ON by mounting my fuzz image. Reported-by: NPeter Becker <floyd.net@gmail.com> Signed-off-by: NLiu Bo <bo.li.liu@oracle.com> Reviewed-by: NDavid Sterba <dsterba@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Liu Bo 提交于
I got this warning while mounting a btrfs image, [ 3020.509606] ------------[ cut here ]------------ [ 3020.510107] WARNING: CPU: 3 PID: 5581 at lib/idr.c:1051 ida_remove+0xca/0x190 [ 3020.510853] ida_remove called for id=42 which is not allocated. [ 3020.511466] Modules linked in: [ 3020.511802] CPU: 3 PID: 5581 Comm: mount Not tainted 4.7.0-rc5+ #274 [ 3020.512438] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.8.2-20150714_191134- 04/01/2014 [ 3020.513385] 0000000000000286 0000000021295d86 ffff88006c66b8f0 ffffffff8182ba5a [ 3020.514153] 0000000000000000 0000000000000009 ffff88006c66b930 ffffffff810e0ed7 [ 3020.514928] 0000041b00000000 ffffffff8289a8c0 ffff88007f437880 0000000000000000 [ 3020.515717] Call Trace: [ 3020.515965] [<ffffffff8182ba5a>] dump_stack+0xc9/0x13f [ 3020.516487] [<ffffffff810e0ed7>] __warn+0x147/0x160 [ 3020.517005] [<ffffffff810e0f4f>] warn_slowpath_fmt+0x5f/0x80 [ 3020.517572] [<ffffffff8182e6ca>] ida_remove+0xca/0x190 [ 3020.518075] [<ffffffff813a2bcc>] free_anon_bdev+0x2c/0x60 [ 3020.518609] [<ffffffff81657a9f>] free_fs_root+0x13f/0x160 [ 3020.519138] [<ffffffff8165c679>] btrfs_get_fs_root+0x379/0x3d0 [ 3020.519710] [<ffffffff81e6e975>] ? __mutex_unlock_slowpath+0x155/0x2c0 [ 3020.520366] [<ffffffff816615b1>] open_ctree+0x2e91/0x3200 [ 3020.520965] [<ffffffff8161ede2>] btrfs_mount+0x1322/0x15b0 [ 3020.521536] [<ffffffff81e60e74>] ? kmemleak_alloc_percpu+0x44/0x170 [ 3020.522167] [<ffffffff8115f5e1>] ? lockdep_init_map+0x61/0x210 [ 3020.522780] [<ffffffff813a4f59>] mount_fs+0x49/0x2c0 [ 3020.523305] [<ffffffff813d840c>] vfs_kern_mount+0xac/0x1b0 [ 3020.523872] [<ffffffff8161dee1>] btrfs_mount+0x421/0x15b0 [ 3020.524402] [<ffffffff81e60e74>] ? kmemleak_alloc_percpu+0x44/0x170 [ 3020.525045] [<ffffffff8115f5e1>] ? lockdep_init_map+0x61/0x210 [ 3020.525657] [<ffffffff8115f5e1>] ? lockdep_init_map+0x61/0x210 [ 3020.526289] [<ffffffff813a4f59>] mount_fs+0x49/0x2c0 [ 3020.526803] [<ffffffff813d840c>] vfs_kern_mount+0xac/0x1b0 [ 3020.527365] [<ffffffff813dc27a>] do_mount+0x41a/0x1770 [ 3020.527899] [<ffffffff812e800d>] ? strndup_user+0x6d/0xc0 [ 3020.528447] [<ffffffff812e7f68>] ? memdup_user+0x78/0xb0 [ 3020.528987] [<ffffffff813ddad0>] SyS_mount+0x150/0x160 [ 3020.529493] [<ffffffff81e72b7c>] entry_SYSCALL_64_fastpath+0x1f/0xbd It turns out that we free fs root twice, btrfs_init_fs_root() calls free_anon_bdev(root->anon_dev) and later then btrfs_get_fs_root() cals free_fs_root which does another free_anon_bdev() and it ends up with the above warning. Instead of reset root->anon_dev to 0 after free_anon_bdev(), we can let btrfs_init_fs_root() return directly since its callers have already done the free job by calling free_fs_root(). Signed-off-by: NLiu Bo <bo.li.liu@oracle.com> Reviewed-by: NDavid Sterba <dsterba@suse.com> Reviewed-by: NChandan Rajendra <chandan@linux.vnet.ibm.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Liu Bo 提交于
With btrfs-corrupt-block, one can set btree node/leaf's field, if we assign a negative value to node/leaf, we can get various hangs, eg. if extent_root's nritems is -2ULL, then we get stuck in btrfs_read_block_groups() because it has a while loop and btrfs_search_slot() on extent_root will always return the first child. This lets us know what's happening and returns a EINVAL to callers instead of returning the first item. Signed-off-by: NLiu Bo <bo.li.liu@oracle.com> Reviewed-by: NDavid Sterba <dsterba@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Liu Bo 提交于
With btrfs-corrupt-block, one can drop one chunk item and mounting will end up with a panic in btrfs_full_stripe_len(). This doesn't not remove the BUG_ON, but instead checks it a bit earlier when we find the block group item. Signed-off-by: NLiu Bo <bo.li.liu@oracle.com> Reviewed-by: NDavid Sterba <dsterba@suse.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Wang Xiaoguang 提交于
Signed-off-by: NWang Xiaoguang <wangxg.fnst@cn.fujitsu.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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- 21 7月, 2016 3 次提交
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由 Chris Mason 提交于
Commit 56244ef1 was almost but not quite enough to fix the reservation math after btrfs_copy_from_user returned partial copies. Some users are still seeing warnings in btrfs_destroy_inode, and with a long enough test run I'm able to trigger them as well. This patch fixes the accounting math again, bringing it much closer to the way it was before the sectorsize conversion Chandan did. The problem is accounting for the offset into the page/sector when we do a partial copy. This one just uses the dirty_sectors variable which should already be updated properly. Signed-off-by: NChris Mason <clm@fb.com> cc: stable@vger.kernel.org # v4.6+
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由 Josef Bacik 提交于
The new enospc code makes it possible to deadlock if we don't use FLUSH_LIMIT during reservations inside a transaction. This enforces the correct flush type to avoid both deadlocks and assertions Signed-off-by: NChris Mason <clm@fb.com> Signed-off-by: NJosef Bacik <jbacik@fb.com>
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由 Chris Mason 提交于
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- 08 7月, 2016 2 次提交
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由 Josef Bacik 提交于
We used to allow you to set FLUSH_ALL and then just wouldn't do things like commit transactions or wait on ordered extents if we noticed you were in a transaction. However now that all the flushing for FLUSH_ALL is asynchronous we've lost the ability to tell, and we could end up deadlocking. So instead use FLUSH_LIMIT in reserve_metadata_bytes in relocation and then return -EAGAIN if we error out to preserve the previous behavior. I've also added an ASSERT() to catch anybody else who tries to do this. Thanks, Signed-off-by: NJosef Bacik <jbacik@fb.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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由 Josef Bacik 提交于
Since we set the reloc control before we've reserved our space for relocation we could race with a root being dirtied and not actually have space to do our init reloc root. So once we've allocated it and set it up go ahead and make our reservation before setting the relocate control, that way anybody who tries to do the reloc root init has space to use. Thanks, Signed-off-by: NJosef Bacik <jbacik@fb.com> Signed-off-by: NDavid Sterba <dsterba@suse.com>
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