kernel/git/stable/linux.git/fs/btrfs/compression.h, branch linux-4.13.y

Merge branch 'for-4.13-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

2017-07-05T23:41:23+00:00

Pull btrfs updates from David Sterba: "The core updates improve error handling (mostly related to bios), with the usual incremental work on the GFP_NOFS (mis)use removal, refactoring or cleanups. Except the two top patches, all have been in for-next for an extensive amount of time. User visible changes: - statx support - quota override tunable - improved compression thresholds - obsoleted mount option alloc_start Core updates: - bio-related updates: - faster bio cloning - no allocation failures - preallocated flush bios - more kvzalloc use, memalloc_nofs protections, GFP_NOFS updates - prep work for btree_inode removal - dir-item validation - qgoup fixes and updates - cleanups: - removed unused struct members, unused code, refactoring - argument refactoring (fs_info/root, caller -> callee sink) - SEARCH_TREE ioctl docs" * 'for-4.13-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (115 commits) btrfs: Remove false alert when fiemap range is smaller than on-disk extent btrfs: Don't clear SGID when inheriting ACLs btrfs: fix integer overflow in calc_reclaim_items_nr btrfs: scrub: fix target device intialization while setting up scrub context btrfs: qgroup: Fix qgroup reserved space underflow by only freeing reserved ranges btrfs: qgroup: Introduce extent changeset for qgroup reserve functions btrfs: qgroup: Fix qgroup reserved space underflow caused by buffered write and quotas being enabled btrfs: qgroup: Return actually freed bytes for qgroup release or free data btrfs: qgroup: Cleanup btrfs_qgroup_prepare_account_extents function btrfs: qgroup: Add quick exit for non-fs extents Btrfs: rework delayed ref total_bytes_pinned accounting Btrfs: return old and new total ref mods when adding delayed refs Btrfs: always account pinned bytes when dropping a tree block ref Btrfs: update total_bytes_pinned when pinning down extents Btrfs: make BUG_ON() in add_pinned_bytes() an ASSERT() Btrfs: make add_pinned_bytes() take an s64 num_bytes instead of u64 btrfs: fix validation of XATTR_ITEM dir items btrfs: Verify dir_item in iterate_object_props btrfs: Check name_len before in btrfs_del_root_ref btrfs: Check name_len before reading btrfs_get_name ...

btrfs: reduce arguments for decompress_bio ops

2017-06-19T16:26:00+00:00

struct compressed_bio pointer can be used instead. Signed-off-by: Anand Jain Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba

block: switch bios to blk_status_t

2017-06-09T15:27:32+00:00

Replace bi_error with a new bi_status to allow for a clear conversion. Note that device mapper overloaded bi_error with a private value, which we'll have to keep arround at least for now and thus propagate to a proper blk_status_t value. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe

btrfs: derive maximum output size in the compression implementation

2017-02-28T13:26:36+00:00

The value of max_out can be calculated from the parameters passed to the compressors, which is number of pages and the page size, and we don't have to needlessly pass it around. Signed-off-by: David Sterba

btrfs: export compression buffer limits in a header

2017-02-28T13:26:35+00:00

Move the buffer limit definitions out of compress_file_range. Reviewed-by: Qu Wenruo Signed-off-by: David Sterba

btrfs: merge nr_pages input and output parameter in compress_pages

2017-02-28T13:26:35+00:00

The parameter saying how many pages can be allocated at maximum can be merged with the output page counter, to save some stack space. The compression implementation will sink the parameter to a local variable so everything works as before. The nr_pages variables can also be simply merged in compress_file_range into one. Signed-off-by: David Sterba

btrfs: merge length input and output parameter in compress_pages

2017-02-28T13:26:35+00:00

The length parameter is basically duplicated for input and output in the top level caller of the compress_pages chain. We can simply use one variable for that and reduce stack consumption. The compression implementation will sink the parameter to a local variable so everything works as before. Signed-off-by: David Sterba

btrfs: constify buffers used by compression helpers

2017-02-28T13:26:07+00:00

Signed-off-by: David Sterba

btrfs: use bio iterators for the decompression handlers

2016-11-30T12:45:19+00:00

Pass the full bio to the decompression routines and use bio iterators to iterate over the data in the bio. Signed-off-by: Christoph Hellwig Signed-off-by: David Sterba

btrfs: move btrfs_compression_type to compression.h

2016-03-11T16:12:46+00:00

So that its better organized. Signed-off-by: Anand Jain Reviewed-by: David Sterba Signed-off-by: David Sterba