user/sven/linux.git/include/trace/events/f2fs.h, branch v5.7

f2fs: compress: support zstd compress algorithm

2020-04-03T17:21:10Z

Add zstd compress algorithm support, use "compress_algorithm=zstd" mountoption to enable it. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: show the CP_PAUSE reason in checkpoint traces

2020-01-18T00:48:43Z

Remove the duplicate CP_UMOUNT enum and add the new CP_PAUSE enum to show the checkpoint reason in the trace prints. Signed-off-by: Sahitya Tummala Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: support data compression

2020-01-18T00:48:07Z

This patch tries to support compression in f2fs. - New term named cluster is defined as basic unit of compression, file can be divided into multiple clusters logically. One cluster includes 4 << n (n >= 0) logical pages, compression size is also cluster size, each of cluster can be compressed or not. - In cluster metadata layout, one special flag is used to indicate cluster is compressed one or normal one, for compressed cluster, following metadata maps cluster to [1, 4 << n - 1] physical blocks, in where f2fs stores data including compress header and compressed data. - In order to eliminate write amplification during overwrite, F2FS only support compression on write-once file, data can be compressed only when all logical blocks in file are valid and cluster compress ratio is lower than specified threshold. - To enable compression on regular inode, there are three ways: * chattr +c file * chattr +c dir; touch dir/file * mount w/ -o compress_extension=ext; touch file.ext Compress metadata layout: [Dnode Structure] +-----------------------------------------------+ | cluster 1 | cluster 2 | ......... | cluster N | +-----------------------------------------------+ . . . . . . . . . Compressed Cluster . . Normal Cluster . +----------+---------+---------+---------+ +---------+---------+---------+---------+ |compr flag| block 1 | block 2 | block 3 | | block 1 | block 2 | block 3 | block 4 | +----------+---------+---------+---------+ +---------+---------+---------+---------+ . . . . . . +-------------+-------------+----------+----------------------------+ | data length | data chksum | reserved | compressed data | +-------------+-------------+----------+----------------------------+ Changelog: 20190326: - fix error handling of read_end_io(). - remove unneeded comments in f2fs_encrypt_one_page(). 20190327: - fix wrong use of f2fs_cluster_is_full() in f2fs_mpage_readpages(). - don't jump into loop directly to avoid uninitialized variables. - add TODO tag in error path of f2fs_write_cache_pages(). 20190328: - fix wrong merge condition in f2fs_read_multi_pages(). - check compressed file in f2fs_post_read_required(). 20190401 - allow overwrite on non-compressed cluster. - check cluster meta before writing compressed data. 20190402 - don't preallocate blocks for compressed file. - add lz4 compress algorithm - process multiple post read works in one workqueue Now f2fs supports processing post read work in multiple workqueue, it shows low performance due to schedule overhead of multiple workqueue executing orderly. 20190921 - compress: support buffered overwrite C: compress cluster flag V: valid block address N: NEW_ADDR One cluster contain 4 blocks before overwrite after overwrite - VVVV -> CVNN - CVNN -> VVVV - CVNN -> CVNN - CVNN -> CVVV - CVVV -> CVNN - CVVV -> CVVV 20191029 - add kconfig F2FS_FS_COMPRESSION to isolate compression related codes, add kconfig F2FS_FS_{LZO,LZ4} to cover backend algorithm. note that: will remove lzo backend if Jaegeuk agreed that too. - update codes according to Eric's comments. 20191101 - apply fixes from Jaegeuk 20191113 - apply fixes from Jaegeuk - split workqueue for fsverity 20191216 - apply fixes from Jaegeuk 20200117 - fix to avoid NULL pointer dereference [Jaegeuk Kim] - add tracepoint for f2fs_{,de}compress_pages() - fix many bugs and add some compression stats - fix overwrite/mmap bugs - address 32bit build error, reported by Geert. - bug fixes when handling errors and i_compressed_blocks Reported-by: Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim

Merge tag 'f2fs-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

2019-07-13T00:28:24Z

Pull f2fs updates from Jaegeuk Kim: "In this round, we've introduced native swap file support which can exploit DIO, enhanced existing checkpoint=disable feature with additional mount option to tune the triggering condition, and allowed user to preallocate physical blocks in a pinned file which will be useful to avoid f2fs fragmentation in append-only workloads. In addition, we've fixed subtle quota corruption issue. Enhancements: - add swap file support which uses DIO - allocate blocks for pinned file - allow SSR and mount option to enhance checkpoint=disable - enhance IPU IOs - add more sanity checks such as memory boundary access Bug fixes: - quota corruption in very corner case of error-injected SPO case - fix root_reserved on remount and some wrong counts - add missing fsck flag Some patches were also introduced to clean up ambiguous i_flags and debugging messages codes" * tag 'f2fs-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (33 commits) f2fs: improve print log in f2fs_sanity_check_ckpt() f2fs: avoid out-of-range memory access f2fs: fix to avoid long latency during umount f2fs: allow all the users to pin a file f2fs: support swap file w/ DIO f2fs: allocate blocks for pinned file f2fs: fix is_idle() check for discard type f2fs: add a rw_sem to cover quota flag changes f2fs: set SBI_NEED_FSCK for xattr corruption case f2fs: use generic EFSBADCRC/EFSCORRUPTED f2fs: Use DIV_ROUND_UP() instead of open-coding f2fs: print kernel message if filesystem is inconsistent f2fs: introduce f2fs_ macros to wrap f2fs_printk() f2fs: avoid get_valid_blocks() for cleanup f2fs: ioctl for removing a range from F2FS f2fs: only set project inherit bit for directory f2fs: separate f2fs i_flags from fs_flags and ext4 i_flags f2fs: replace ktype default_attrs with default_groups f2fs: Add option to limit required GC for checkpoint=disable f2fs: Fix accounting for unusable blocks ...

f2fs: support swap file w/ DIO

2019-07-03T15:52:54Z

Signed-off-by: Jaegeuk Kim

f2fs: use block layer helper for show_bio_op macro

2019-06-20T19:03:52Z

Adjust the f2fs tracing code to use newly introduced block layer function blk_op_str() which converts the REQ_OP_XXX into the string XXX. Reviewed-by: Chao Yu Signed-off-by: Chaitanya Kulkarni Signed-off-by: Jens Axboe

f2fs: add tracepoint for f2fs_filemap_fault()

2019-05-09T04:23:13Z

This patch adds tracepoint for f2fs_filemap_fault(). Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: add tracepoint for f2fs_file_write_iter()

2019-04-16T20:51:32Z

This patch adds tracepoint for f2fs_file_write_iter(). Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: print more parameters in trace_f2fs_map_blocks

2019-03-13T01:59:19Z

for better map_blocks trace. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: trace f2fs_ioc_shutdown

2019-03-13T01:59:19Z

This patch supports to trace f2fs_ioc_shutdown. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim