linux-dev/drivers/staging/erofs/data.c, branch master

erofs: move erofs out of staging

2019-08-24T12:20:10Z

EROFS filesystem has been merged into linux-staging for a year. EROFS is designed to be a better solution of saving extra storage space with guaranteed end-to-end performance for read-only files with the help of reduced metadata, fixed-sized output compression and decompression inplace technologies. In the past year, EROFS was greatly improved by many people as a staging driver, self-tested, betaed by a large number of our internal users, successfully applied to almost all in-service HUAWEI smartphones as the part of EMUI 9.1 and proven to be stable enough to be moved out of staging. EROFS is a self-contained filesystem driver. Although there are still some TODOs to be more generic, we have a dedicated team actively keeping on working on EROFS in order to make it better with the evolution of Linux kernel as the other in-kernel filesystems. As Pavel suggested, it's better to do as one commit since git can do moves and all histories will be saved in this way. Let's promote it from staging and enhance it more actively as a "real" part of kernel for more wider scenarios! Cc: Greg Kroah-Hartman Cc: Alexander Viro Cc: Andrew Morton Cc: Stephen Rothwell Cc: Theodore Ts'o Cc: Pavel Machek Cc: David Sterba Cc: Amir Goldstein Cc: Christoph Hellwig Cc: Darrick J . Wong Cc: Dave Chinner Cc: Jaegeuk Kim Cc: Jan Kara Cc: Richard Weinberger Cc: Linus Torvalds Cc: Chao Yu Cc: Miao Xie Cc: Li Guifu Cc: Fang Wei Signed-off-by: Gao Xiang Link: https://lore.kernel.org/r/20190822213659.5501-1-hsiangkao@aol.com Signed-off-by: Greg Kroah-Hartman

staging: erofs: introduce EFSCORRUPTED and more logs

2019-08-15T12:24:30Z

Previously, EROFS uses EIO to indicate that filesystem is corrupted as well. However, as Pavel said [1], other filesystems tend to use EUCLEAN(EFSCORRUPTED) instead, let's follow what others do right now. Also, add some more prints to the syslog. [1] https://lore.kernel.org/lkml/20190813114821.GB11559@amd/ Suggested-by: Pavel Machek Reviewed-by: Chao Yu Signed-off-by: Gao Xiang Link: https://lore.kernel.org/r/20190814103705.60698-1-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman

staging: erofs: remove incomplete cleancache

2019-08-14T10:50:55Z

cleancache was not fully implemented in EROFS. In addition, it's tend to remove the whole cleancache in related attempt [1]. [1] https://lore.kernel.org/linux-fsdevel/20190527103207.13287-3-jgross@suse.com/ Signed-off-by: Gao Xiang Reviewed-by: Chao Yu Link: https://lore.kernel.org/r/20190813023054.73126-2-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman

staging: erofs: update source file headers

2019-08-02T11:52:03Z

- Use the correct style for all SPDX License Identifiers; - Get rid of the unnecessary license boilerplate; - Use "GPL-2.0-only" instead of "GPL-2.0" suggested-by Stephen. Reviewed-by: Chao Yu Signed-off-by: Gao Xiang Link: https://lore.kernel.org/r/20190731155752.210602-2-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman

staging: erofs: support bmap

2019-07-22T05:34:15Z

Add erofs_bmap() to support FIBMAP ioctl on flatmode inode. Reviewed-by: Gao Xiang Signed-off-by: Chao Yu Link: https://lore.kernel.org/r/20190716093256.108791-1-yuchao0@huawei.com Signed-off-by: Greg Kroah-Hartman

staging: erofs: add compacted ondisk compression indexes

2019-06-26T01:44:39Z

This patch introduces new compacted compression indexes. In contract to legacy compression indexes that each 4k logical cluster has an 8-byte index, compacted ondisk compression indexes will have amortized 2 bytes for each 4k logical cluster (compacted 2B) amortized 4 bytes for each 4k logical cluster (compacted 4B) In detail, several continuous clusters will be encoded in a compacted pack with cluster types, offsets, and one blkaddr at the end of the pack to leave 4-byte margin for better decoding performance, as illustrated below: _____________________________________________ |___@_____ encoded bits __________|_ blkaddr _| 0 . amortized * vcnt . . . . amortized * vcnt - 4 . . .___________________. |_type_|_clusterofs_| Note that compacted 2 / 4B should be aligned with 32 / 8 bytes in order to avoid each pack crossing page boundary. Reviewed-by: Chao Yu Signed-off-by: Gao Xiang Signed-off-by: Greg Kroah-Hartman

Merge tag 'for-5.2/block-20190507' of git://git.kernel.dk/linux-block

2019-05-08T01:14:36Z

Pull block updates from Jens Axboe: "Nothing major in this series, just fixes and improvements all over the map. This contains: - Series of fixes for sed-opal (David, Jonas) - Fixes and performance tweaks for BFQ (via Paolo) - Set of fixes for bcache (via Coly) - Set of fixes for md (via Song) - Enabling multi-page for passthrough requests (Ming) - Queue release fix series (Ming) - Device notification improvements (Martin) - Propagate underlying device rotational status in loop (Holger) - Removal of mtip32xx trim support, which has been disabled for years (Christoph) - Improvement and cleanup of nvme command handling (Christoph) - Add block SPDX tags (Christoph) - Cleanup/hardening of bio/bvec iteration (Christoph) - A few NVMe pull requests (Christoph) - Removal of CONFIG_LBDAF (Christoph) - Various little fixes here and there" * tag 'for-5.2/block-20190507' of git://git.kernel.dk/linux-block: (164 commits) block: fix mismerge in bvec_advance block: don't drain in-progress dispatch in blk_cleanup_queue() blk-mq: move cancel of hctx->run_work into blk_mq_hw_sysfs_release blk-mq: always free hctx after request queue is freed blk-mq: split blk_mq_alloc_and_init_hctx into two parts blk-mq: free hw queue's resource in hctx's release handler blk-mq: move cancel of requeue_work into blk_mq_release blk-mq: grab .q_usage_counter when queuing request from plug code path block: fix function name in comment nvmet: protect discovery change log event list iteration nvme: mark nvme_core_init and nvme_core_exit static nvme: move command size checks to the core nvme-fabrics: check more command sizes nvme-pci: check more command sizes nvme-pci: remove an unneeded variable initialization nvme-pci: unquiesce admin queue on shutdown nvme-pci: shutdown on timeout during deletion nvme-pci: fix psdt field for single segment sgls nvme-multipath: don't print ANA group state by default nvme-multipath: split bios with the ns_head bio_set before submitting ...

block: remove the i argument to bio_for_each_segment_all

2019-04-30T15:26:13Z

We only have two callers that need the integer loop iterator, and they can easily maintain it themselves. Suggested-by: Matthew Wilcox Reviewed-by: Johannes Thumshirn Acked-by: David Sterba Reviewed-by: Hannes Reinecke Acked-by: Coly Li Reviewed-by: Matthew Wilcox Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe

Merge 5.1-rc6 into staging-next

2019-04-21T21:18:44Z

We want the fixes in here as well as this resolves an iio driver merge issue. Signed-off-by: Greg Kroah-Hartman

staging: erofs: fix unexpected out-of-bound data access

2019-04-16T11:56:20Z

Unexpected out-of-bound data will be read in erofs_read_raw_page after commit 07173c3ec276 ("block: enable multipage bvecs") since one iovec could have multiple pages. Let's fix as what Ming's pointed out in the previous email [1]. [1] https://lore.kernel.org/lkml/20190411080953.GE421@ming.t460p/ Suggested-by: Ming Lei Reviewed-by: Chao Yu Signed-off-by: Gao Xiang Fixes: 07173c3ec276 ("block: enable multipage bvecs") Signed-off-by: Greg Kroah-Hartman