- 30 Mar, 2018 36 commits
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Qu Wenruo authored
When checking the minimal nr_devs, there is one dead and meaningless condition: if (ndevs < devs_increment * sub_stripes || ndevs < devs_min) { ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ This condition is meaningless, @devs_increment has nothing to do with @sub_stripes. In fact, in btrfs_raid_array[], profile with sub_stripes larger than 1 (RAID10) already has the @devs_increment set to 2. So no need to multiple it by @sub_stripes. And above condition is also dead. For RAID10, @devs_increment * @sub_stripes equals 4, which is also the @devs_min of RAID10. For other profiles, @sub_stripes is always 1, and since @ndevs is rounded down to @devs_increment, the condition will always be true. Remove the meaningless condition to make later reader wander less. Signed-off-by:Qu Wenruo <wqu@suse.com> Reviewed-by:
Nikolay Borisov <nborisov@suse.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
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Nikolay Borisov authored
This function is the entry to the extent allocator and as such has quite a number of parameters. Some of those have subtle effects on the allocation algorithm. Document the parameters. Signed-off-by:
Anand Jain <anand.jain@oracle.com> Signed-off-by:
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Nikolay Borisov authored
As with every function which deals with modifying the btree btrfs_uuid_tree_rem can fail for any number of reasons (ie. EIO/ENOMEM). Handle return error value from this function gracefully by aborting the transaction. Fixes: dd5f9615 ("Btrfs: maintain subvolume items in the UUID tree") Signed-off-by:
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Nikolay Borisov authored
The kernel would like to have all stack VLA usage removed[1]. Unfortunately using an integer constant variable as the size of an array is still considered a VLA. Instead let's use directly sizeof(var) which removes the VLA usage. Use the occasion to remove csum_size altogether and use sizeof() also for the size passed to memcmp [1]: https://lkml.org/lkml/2018/3/7/621Signed-off-by:
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David Sterba authored
Signed-off-by: -
David Sterba authored
Remove parameters not used by any of the callbacks. Signed-off-by: -
David Sterba authored
Remove parameters not used by any of the callbacks. Signed-off-by: -
David Sterba authored
The callbacks make use of different parameters that are passed to the other type unnecessarily. This patch adds separate types for each and the unused parameters will be removed. The type extent_submit_bio_hook_t keeps all parameters and can be used where the start/done types are not appropriate. Signed-off-by: -
David Sterba authored
A useless wrapper around tree_mod_log_insert_root that hides missing error handling. Move it to the callers. Reviewed-by:
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David Sterba authored
A trivial wrapper that can be simply opencoded and makes the GFP allocation request more visible. The error handling is now moved to the callers. Reviewed-by:
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David Sterba authored
The wrapper is effectively an alias for tree_mod_log_insert_move but also hides the missing error handling. To make that more visible, lift the BUG_ON to the callers. Reviewed-by:
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David Sterba authored
The wrappers are trivial and do not bring any extra value on top of the plain locking primitives. Reviewed-by:
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David Sterba authored
It's provided by the extent_buffer. Signed-off-by: -
David Sterba authored
The tree_mod_move is not used anywhere and can be embedded as anonymous structure. Signed-off-by: -
David Sterba authored
Signed-off-by: -
David Sterba authored
It's provided by the extent_buffer. Signed-off-by: -
David Sterba authored
It's provided by the extent_buffer. Signed-off-by: -
David Sterba authored
It's provided by the extent_buffer. Signed-off-by: -
David Sterba authored
It's provided by the extent_buffer. Signed-off-by: -
David Sterba authored
It's provided by the extent_buffer. Signed-off-by: -
David Sterba authored
Signed-off-by: -
David Sterba authored
The merge call was factored out to a separate helper but it's a trivial one and arguably we can opencode it and cache the value. Signed-off-by: -
David Sterba authored
The value of page_end is only stored to end, no other use. Signed-off-by: -
David Sterba authored
All callers pass a valid pointer so we can drop the redundant checks. The call to submit_one_bio never happend and can be removed. Signed-off-by: -
Liu Bo authored
In case of raid56, writes and rebuilds always take BTRFS_STRIPE_LEN(64K) as unit, however, scrub_extent() sets blocksize as unit, so rebuild process may be triggered on every block on a same stripe. A typical example would be that when we're replacing a disappeared disk, all reads on the disks get -EIO, every block (size is 4K if blocksize is 4K) would go thru these, scrub_handle_errored_block scrub_recheck_block # re-read pages one by one scrub_recheck_block # rebuild by calling raid56_parity_recover() page by page Although with raid56 stripe cache most of reads during rebuild can be avoided, the parity recover calculation(xor or raid6 algorithms) needs to be done $(BTRFS_STRIPE_LEN / blocksize) times. This makes it smarter by doing raid56 scrub/replace on stripe length. Signed-off-by:Liu Bo <bo.li.liu@oracle.com> Signed-off-by:
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David Sterba authored
Sort mount options by the primary name, followed by the 'no-' counterpart if it exists. Group the deprecated and debugging options. Enum and token defintions are synced. Signed-off-by: -
Howard McLauchlan authored
Btrfs has two mount options for SSD optimizations: ssd and ssd_spread. Presently there is an option to disable all SSD optimizations, but there isn't an option to disable just ssd_spread. This patch adds a mount option nossd_spread that disables ssd_spread only. Reviewed-by:
Josef Bacik <jbacik@fb.com> Signed-off-by:
Howard McLauchlan <hmclauchlan@fb.com> Reviewed-by:
Omar Sandoval <osandov@fb.com> Signed-off-by:
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Nikolay Borisov authored
Since userspace transaction have been removed we no longer have use for this field so delete it. Signed-off-by:
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Nikolay Borisov authored
Now that the userspace transaction ioctls have been removed, TRANS_USERSPACE is no longer used hence we can remove it. Signed-off-by:
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Nikolay Borisov authored
Now that the userspace transaction IOCTL have been removed, this member is no longer used so just remove it Signed-off-by:
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Nikolay Borisov authored
Commit 3558d4f8 ("btrfs: Deprecate userspace transaction ioctls") marked the beginning of the end of userspace transaction. This commit finishes the job! There are no known users and ceph does not use the ioctl anymore. Signed-off-by:
Sage Weil <sage@redhat.com> Reviewed-by:
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Qu Wenruo authored
btrfs: qgroup: Fix root item corruption when multiple same source snapshots are created with quota enabled When multiple pending snapshots referring to the same source subvolume are executed, enabled quota will cause root item corruption, where root items are using old bytenr (no backref in extent tree). This can be triggered by fstests btrfs/152. The cause is when source subvolume is still dirty, extra commit (simplied transaction commit) of qgroup_account_snapshot() can skip dirty roots not recorded in current transaction, making root item of source subvolume not updated. Fix it by forcing recording source subvolume in current transaction before qgroup sub-transaction commit. Reported-by:
Justin Maggard <jmaggard@netgear.com> Signed-off-by:
Filipe Manana <fdmanana@suse.com> Signed-off-by:
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Nikolay Borisov authored
When performing an unlock on an extent buffer we'd like to order the decrement of extent_buffer::blocking_writers with waking up any waiters. In such situations it's sufficient to use smp_mb__after_atomic rather than the heavy smp_mb. On architectures where atomic operations are fully ordered (such as x86 or s390) unconditionally executing a heavyweight smp_mb instruction causes a severe hit to performance while bringin no improvements in terms of correctness. The better thing is to use the appropriate smp_mb__after_atomic routine which will do the correct thing (invoke a full smp_mb or in the case of ordered atomics insert a compiler barrier). Put another way, an RMW atomic op + smp_load__after_atomic equals, in terms of semantics, to a full smp_mb. This ensures that none of the problems described in the accompanying comment of waitqueue_active occur. No functional changes. Signed-off-by:
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Anand Jain authored
Some functions can filter metadata by the generation. Add a define that will annotate such arguments. Signed-off-by:
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David Sterba authored
The called function name is self explanatory. Signed-off-by: -
Matthew Wilcox authored
The current implementation of btrfs_page_exists_in_range() gives the wrong answer if the workingset code has stored a shadow entry in the page cache. The filemap_range_has_page() function does not have this problem, and it's shared code, so use it instead. eigned-off-by:
Matthew Wilcox <mawilcox@microsoft.com> Reviewed-by:
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- 26 Mar, 2018 4 commits
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Liu Bo authored
In the last step of scrub_handle_error_block, we try to combine good copies on all possible mirrors, this works fine for raid1 and raid10, but not for raid56 as it's doing parity rebuild. If parity rebuild doesn't get back with correct data which matches its checksum, in case of replace we'd rather write what is stored in the source device than the data calculuated from parity. Signed-off-by:
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Liu Bo authored
async_missing_raid56() is identical to async_read_rebuild(). Signed-off-by:
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Su Yue authored
Previously, btrfs_inode_by_name() returned 0 which left caller to check objectid of location even location if the type was invalid. Let btrfs_inode_by_name() return -EUCLEAN if a corrupted location of a dir entry is found. Removal of label out_err also simplifies the function. Signed-off-by:
Su Yue <suy.fnst@cn.fujitsu.com> Reviewed-by:
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Anand Jain authored
This function btrfs_close_extra_devices() is about freeing extra devids which once it may have belonged to this filesystem. So rename it and add the comment. The _devid suffix is appropriate as this function won't handle devices which are outside of the filesytem being mounted. Signed-off-by:
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