- Feb 15, 2023
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Daeho Jeong authored
To fix a race condition between atomic write aborts, I use the inode lock and make COW inode to be re-usable thoroughout the whole atomic file inode lifetime. Reported-by:
<syzbot+823000d23b3400619f7c@syzkaller.appspotmail.com> Fixes: 3db1de0e ("f2fs: change the current atomic write way") Signed-off-by:
Daeho Jeong <daehojeong@google.com> Reviewed-by:
Chao Yu <chao@kernel.org> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Jaegeuk Kim authored
MAIN_SEGS is for data area, while TOTAL_SEGS includes data and metadata. Reviewed-by:
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Yangtao Li authored
For each loop add a local f2fs_sb_info pointer insted of looking it up. Signed-off-by:
Yangtao Li <frank.li@vivo.com> Reviewed-by:
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Yangtao Li authored
Export ipu_policy as a string in debugfs for better readability and it can help us better understand some strategies of the file system. Signed-off-by:
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- Feb 14, 2023
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Thomas Weißschuh authored
Since commit ee6d3dd4 ("driver core: make kobj_type constant.") the driver core allows the usage of const struct kobj_type. Take advantage of this to constify the structure definitions to prevent modification at runtime. Signed-off-by:
Thomas Weißschuh <linux@weissschuh.net> Reviewed-by:
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- Feb 10, 2023
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Chao Yu authored
In do_read_inode(), sanity check for extent cache should be called after f2fs_init_read_extent_tree(), fix it. Fixes: 72840ccc ("f2fs: allocate the extent_cache by default") Signed-off-by:
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- Feb 08, 2023
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Yangtao Li authored
IPU policy can be disabled, let's add description for it and other policy. Signed-off-by:
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Yangtao Li authored
For LFS mode, it should update outplace and no need inplace update. When using LFS mode for small-volume devices, IPU will not be used, and the OPU writing method is actually used, but F2FS_IPU_FORCE can be read from the ipu_policy node, which is different from the actual situation. And remount to lfs mode should be disallowed when f2fs ipu is enabled, let's fix it. Fixes: 84b89e5d ("f2fs: add auto tuning for small devices") Signed-off-by:
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Jinyoung CHOI authored
This patch is to fix typos in f2fs files. Signed-off-by:
Jinyoung Choi <j-young.choi@samsung.com> Reviewed-by:
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Jaegeuk Kim authored
We should return when io->bio is null before doing anything. Otherwise, panic. BUG: kernel NULL pointer dereference, address: 0000000000000010 RIP: 0010:__submit_merged_write_cond+0x164/0x240 [f2fs] Call Trace: <TASK> f2fs_submit_merged_write+0x1d/0x30 [f2fs] commit_checkpoint+0x110/0x1e0 [f2fs] f2fs_write_checkpoint+0x9f7/0xf00 [f2fs] ? __pfx_issue_checkpoint_thread+0x10/0x10 [f2fs] __checkpoint_and_complete_reqs+0x84/0x190 [f2fs] ? preempt_count_add+0x82/0xc0 ? __pfx_issue_checkpoint_thread+0x10/0x10 [f2fs] issue_checkpoint_thread+0x4c/0xf0 [f2fs] ? __pfx_autoremove_wake_function+0x10/0x10 kthread+0xff/0x130 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x2c/0x50 </TASK> Cc: stable@vger.kernel.org # v5.18+ Fixes: 64bf0eef ("f2fs: pass the bio operation to bio_alloc_bioset") Reviewed-by:
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Yangtao Li authored
Convert to use iostat_lat_type as parameter instead of raw number. BTW, move NUM_PREALLOC_IOSTAT_CTXS to the header file, adjust iostat_lat[{0,1,2}] to iostat_lat[{READ_IO,WRITE_SYNC_IO,WRITE_ASYNC_IO}] in tracepoint function, and rename iotype to page_type to match the definition. Reported-by:kernel test robot <lkp@intel.com> Reported-by:
Dan Carpenter <error27@gmail.com> Signed-off-by:
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qixiaoyu1 authored
Signed-off-by:
qixiaoyu1 <qixiaoyu1@xiaomi.com> Signed-off-by:
xiongping1 <xiongping1@xiaomi.com> Reviewed-by:
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- Feb 06, 2023
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Yangtao Li authored
Commit 5911d2d1 ("f2fs: introduce gc_merge mount option") forgot to show nogc_merge option, let's fix it. Signed-off-by:
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Eric Biggers authored
When writing a page from an encrypted file that is using filesystem-layer encryption (not inline encryption), f2fs encrypts the pagecache page into a bounce page, then writes the bounce page. It also passes the bounce page to wbc_account_cgroup_owner(). That's incorrect, because the bounce page is a newly allocated temporary page that doesn't have the memory cgroup of the original pagecache page. This makes wbc_account_cgroup_owner() not account the I/O to the owner of the pagecache page as it should. Fix this by always passing the pagecache page to wbc_account_cgroup_owner(). Fixes: 578c6478 ("f2fs: implement cgroup writeback support") Cc: stable@vger.kernel.org Reported-by:
Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by:
Eric Biggers <ebiggers@google.com> Acked-by:
Tejun Heo <tj@kernel.org> Reviewed-by:
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qixiaoyu1 authored
Currently we wrongly calculate the new block age to old * LAST_AGE_WEIGHT / 100. Fix it to new * (100 - LAST_AGE_WEIGHT) / 100 + old * LAST_AGE_WEIGHT / 100. Signed-off-by:
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- Feb 03, 2023
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Chao Yu authored
We should update age extent in f2fs_do_zero_range() like we did in f2fs_truncate_data_blocks_range(). Fixes: 71644dff ("f2fs: add block_age-based extent cache") Signed-off-by:
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Chao Yu authored
nr_free may be less than len, we should update age extent cache w/ range [fofs, len] rather than [fofs, nr_free]. Fixes: 71644dff ("f2fs: add block_age-based extent cache") Signed-off-by:
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Yangtao Li authored
Add iotype sanity check to avoid potential memory corruption. This is to fix the compile error below: fs/f2fs/iostat.c:231 __update_iostat_latency() error: buffer overflow 'io_lat->peak_lat[type]' 3 <= 3 vim +228 fs/f2fs/iostat.c 211 static inline void __update_iostat_latency(struct bio_iostat_ctx *iostat_ctx, 212 enum iostat_lat_type type) 213 { 214 unsigned long ts_diff; 215 unsigned int page_type = iostat_ctx->type; 216 struct f2fs_sb_info *sbi = iostat_ctx->sbi; 217 struct iostat_lat_info *io_lat = sbi->iostat_io_lat; 218 unsigned long flags; 219 220 if (!sbi->iostat_enable) 221 return; 222 223 ts_diff = jiffies - iostat_ctx->submit_ts; 224 if (page_type >= META_FLUSH) ^^^^^^^^^^ 225 page_type = META; 226 227 spin_lock_irqsave(&sbi->iostat_lat_lock, flags); @228 io_lat->sum_lat[type][page_type] += ts_diff; ^^^^^^^^^ Mixup between META_FLUSH and NR_PAGE_TYPE leads to memory corruption. Fixes: a4b68176 ("f2fs: introduce periodic iostat io latency traces") Reported-by: -
Jaegeuk Kim authored
If the storage gives a corrupted node block due to short power failure and reset, f2fs stops the entire operations by setting the checkpoint failure flag. Let's give more chances to live by re-issuing IOs for a while in such critical path. Cc: stable@vger.kernel.org Suggested-by:
Randall Huang <huangrandall@google.com> Suggested-by:
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Chao Yu authored
Otherwise, 32-bits binary call ioctl(F2FS_IOC_START_ATOMIC_REPLACE) will fail in 64-bits kernel. Fixes: 41e8f85a ("f2fs: introduce F2FS_IOC_START_ATOMIC_REPLACE") Signed-off-by:
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Chao Yu authored
.i_compress_level was introduced by commit 3fde13f8 ("f2fs: compress: support compress level"), but never be used. This patch updates as below: - load high 8-bits of on-disk .i_compress_flag to in-memory .i_compress_level - load low 8-bits of on-disk .i_compress_flag to in-memory .i_compress_flag - change type of in-memory .i_compress_flag from unsigned short to unsigned char. w/ above changes, we can avoid unneeded bit shift whenever during .init_compress_ctx(), and shrink size of struct f2fs_inode_info. Signed-off-by:
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Chao Yu authored
This patch tries to use bitfield in struct f2fs_io_info to improve memory usage. struct f2fs_io_info { ... unsigned int need_lock:8; /* indicate we need to lock cp_rwsem */ unsigned int version:8; /* version of the node */ unsigned int submitted:1; /* indicate IO submission */ unsigned int in_list:1; /* indicate fio is in io_list */ unsigned int is_por:1; /* indicate IO is from recovery or not */ unsigned int retry:1; /* need to reallocate block address */ unsigned int encrypted:1; /* indicate file is encrypted */ unsigned int post_read:1; /* require post read */ ... }; After this patch, size of struct f2fs_io_info reduces from 136 to 120. [Nathan: fix a compile warning (single-bit-bitfield-constant-conversion)] Signed-off-by:Nathan Chancellor <nathan@kernel.org> Signed-off-by:
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Christoph Hellwig authored
Factor the logic to log a path for reads and writs into a helper shared between the read_iter and write_iter methods. Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
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Christoph Hellwig authored
Just open code the logic in the only caller, where it is more obvious. Signed-off-by:
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Christoph Hellwig authored
Remove __refresh_next_blkoff by opencoding the SSR vs LFS segment check in the only caller, and then add helpers for SSR block selection and blkoff randomization instead. Signed-off-by:
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Christoph Hellwig authored
Just fold this trivial wrapper into the only caller. Signed-off-by:
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Christoph Hellwig authored
Simplify the check whether to allocate a new segment or reuse an open one. Signed-off-by:
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Christoph Hellwig authored
Add a helper to return the valid blocks on log and SSR segments, and replace the last two uses of curseg_blkoff with it. Signed-off-by:
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Christoph Hellwig authored
For each loop add a local curseg_info pointer insted of looking it up for each of the three fields. Signed-off-by:
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- Feb 01, 2023
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Christoph Hellwig authored
This function just assigns a summary entry. This can be done entirely typesafe with an open code struct assignment that relies on array indexing. Signed-off-by:
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Chao Yu authored
Commit 7a10f017 ("f2fs: don't give partially written atomic data from process crash") attempted to drop atomic write data after process crash, however, f2fs_abort_atomic_write() may be called from noncrash case, fix it by adding missed PF_EXITING check condition f2fs_file_flush(). - application crashs - do_exit - exit_signals -- sets PF_EXITING - exit_files - put_files_struct - close_files - filp_close - flush (f2fs_file_flush) - check atomic_write_task && PF_EXITING - f2fs_abort_atomic_write Fixes: 7a10f017 ("f2fs: don't give partially written atomic data from process crash") Signed-off-by:
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Yangtao Li authored
Files created by truncate have a size but no blocks, so they can be allowed to set compression option. Fixes: e1e8debe ("f2fs: add F2FS_IOC_SET_COMPRESS_OPTION ioctl") Signed-off-by:
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Eric Biggers authored
When converting an inline directory to a regular one, f2fs is leaking uninitialized memory to disk because it doesn't initialize the entire directory block. Fix this by zero-initializing the block. This bug was introduced by commit 4ec17d68 ("f2fs: avoid unneeded initializing when converting inline dentry"), which didn't consider the security implications of leaking uninitialized memory to disk. This was found by running xfstest generic/435 on a KMSAN-enabled kernel. Fixes: 4ec17d68 ("f2fs: avoid unneeded initializing when converting inline dentry") Cc: <stable@vger.kernel.org> # v4.3+ Signed-off-by:
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Alexander Potapenko authored
When aops->write_begin() does not initialize fsdata, KMSAN may report an error passing the latter to aops->write_end(). Fix this by unconditionally initializing fsdata. Suggested-by:
Eric Biggers <ebiggers@kernel.org> Fixes: 95ae251f ("f2fs: add fs-verity support") Signed-off-by:
Alexander Potapenko <glider@google.com> Reviewed-by:
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Yangtao Li authored
hot_data_age_threshold is a non-zero positive number, and condition 2 includes condition 1, so there is no need to additionally judge whether t is 0. And let's remove it. Signed-off-by:
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Yangtao Li authored
f2fs: return true if all cmd were issued or no cmd need to be issued for f2fs_issue_discard_timeout() f2fs_issue_discard_timeout() returns whether discard cmds are dropped, which does not match the meaning of the function. Let's change it to return whether all discard cmd are issued. After commit 4d674904 ("f2fs: Don't create discard thread when device doesn't support realtime discard"), f2fs_issue_discard_timeout() is alse called by f2fs_remount(). Since the comments of f2fs_issue_discard_timeout() doesn't make much sense, let's update it. Signed-off-by:
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Yangtao Li authored
commit 3fde13f8 ("f2fs: compress: support compress level") introduce compress level, which macro(COMPRESS_LEVEL_OFFSET) is 8, But use wrong comment about compress level. Let's fix it. Signed-off-by:
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Yangtao Li authored
Convert to show discard_unit only when has DISCARD opt. Signed-off-by:
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Chao Yu authored
In do_read_inode(), sanity_check_inode() should be called after f2fs_init_read_extent_tree(), fix it. Fixes: 72840ccc ("f2fs: allocate the extent_cache by default") Signed-off-by:
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Chao Yu authored
f2fs_rename() has checked CP_ERROR_FLAG, so remove redundant check in f2fs_create_whiteout(). Signed-off-by:
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