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* f2fs: super: constify fscrypt_operations structureBhumika Goyal2017-02-231-2/+2
| | | | | | | | | | | | | | | | | | Declare fscrypt_operations structure as const as it is only stored in the s_cop field of a super_block structure. This field is of type const, so fscrypt_operations structure having this property can be made const too. File size before: fs/f2fs/super.o text data bss dec hex filename 54131 31355 184 85670 14ea6 fs/f2fs/super.o File size after: fs/f2fs/super.o text data bss dec hex filename 54227 31259 184 85670 14ea6 fs/f2fs/super.o Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: show checkpoint version at mount timeJaegeuk Kim2017-02-231-0/+2
| | | | | | If we mounted f2fs successfully, let's show current checkpoint version. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: fix a typo in f2fs.txtTiezhu Yang2017-02-231-1/+1
| | | | | | | There is a typo "f2f2" in f2fs.txt, this patch fixes it. Signed-off-by: Tiezhu Yang <kernelpatch@126.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: remove preflush for nobarrier caseJaegeuk Kim2017-02-231-2/+2
| | | | | | This patch removes REQ_PREFLUSH in the nobarrier case. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: check last page index in cached bio to decide submissionJaegeuk Kim2017-02-235-35/+40
| | | | | | | | If the cached bio has the last page's index, then we need to submit it. Otherwise, we don't need to submit it and can wait for further IO merges. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: check io submission more preciselyJaegeuk Kim2017-02-233-14/+37
| | | | | | This patch check IO submission more precisely than previous rough check. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: call internal __write_data_page directlyJaegeuk Kim2017-02-231-2/+8
| | | | | | | This patch introduces __write_data_page to call it by f2fs_write_cache_pages directly.. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: avoid out-of-order execution of atomic writesJaegeuk Kim2017-02-233-4/+10
| | | | | | | | | | | | We need to flush data writes before flushing last node block writes by using FUA with PREFLUSH. We don't need to guarantee precedent node writes since if those are not written, we can't reach to the last node block when scanning node block chain during roll-forward recovery. Afterwards f2fs_wait_on_page_writeback guarantees all the IO submission to disk, which builds a valid node block chain. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: move write_node_page above fsync_node_pagesJaegeuk Kim2017-02-231-67/+73
| | | | | | | This patch just moves write_node_page and introduces an inner function. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: move flush tracepointJaegeuk Kim2017-02-231-3/+3
| | | | | | | This patch moves the tracepoint location for flush command. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: show # of APPEND and UPDATE inodesJaegeuk Kim2017-02-222-3/+5
| | | | | | | This patch shows cached # of APPEND and UPDATE inode entries. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: fix 446 coding style warnings in f2fs.hDongOh Shin2017-02-221-228/+270
| | | | | | | | | | | | | | 1) Nine coding style warnings below have been resolved: "Missing a blank line after declarations" 2) 435 coding style warnings below have been resolved: "function definition argument 'x' should also have an identifier name" 3) Two coding style warnings below have been resolved: "macros should not use a trailing semicolon" Signed-off-by: DongOh Shin <doscode.kr@gmail.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: fix 3 coding style errors in f2fs.hDongOh Shin2017-02-221-3/+3
| | | | | | | | | | | Two coding style errors below have been resolved: "Macros with complex values should be enclosed in parentheses" And a coding style error below has been resolved: "space prohibited before that ',' (ctx:WxW)" Signed-off-by: DongOh Shin <doscode.kr@gmail.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: declare missing static functionJaegeuk Kim2017-02-221-2/+2
| | | | | | We missed two functions declared as static functions. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: show the fault injection mount optionKaixu Xia2017-02-221-0/+5
| | | | | | | | This patch shows the fault injection mount option in f2fs_show_options(). Signed-off-by: Kaixu Xia <xiakaixu@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: fix null pointer dereference when issuing flush in ->fsyncChao Yu2017-02-221-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We only allocate flush merge control structure sbi::sm_info::fcc_info when flush_merge option is on, but in f2fs_issue_flush we still try to access member of the control structure without that option, it incurs panic as show below, fix it. Call Trace: __remove_ino_entry+0xa9/0xc0 [f2fs] f2fs_do_sync_file.isra.27+0x214/0x6d0 [f2fs] f2fs_sync_file+0x18/0x20 [f2fs] vfs_fsync_range+0x3d/0xb0 __do_page_fault+0x261/0x4d0 do_fsync+0x3d/0x70 SyS_fsync+0x10/0x20 do_syscall_64+0x6e/0x180 entry_SYSCALL64_slow_path+0x25/0x25 RIP: 0033:0x7f18ce260de0 RSP: 002b:00007ffdd4589258 EFLAGS: 00000246 ORIG_RAX: 000000000000004a RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f18ce260de0 RDX: 0000000000000006 RSI: 00000000016c0360 RDI: 0000000000000003 RBP: 00000000016c0360 R08: 000000000000ffff R09: 000000000000001f R10: 00007ffdd4589020 R11: 0000000000000246 R12: 00000000016c0100 R13: 0000000000000000 R14: 00000000016c1f00 R15: 00000000016c0100 Code: fb 81 e3 00 08 00 00 48 89 45 a0 0f 1f 44 00 00 31 c0 85 db 75 27 41 81 e7 00 04 00 00 74 0c 41 8b 45 20 85 c0 0f 85 81 00 00 00 <f0> 41 ff 45 20 4c 89 e7 e8 f8 e9 ff ff f0 41 ff 4d 20 48 83 c4 RIP: f2fs_issue_flush+0x5b/0x170 [f2fs] RSP: ffffc90003b5fd78 CR2: 0000000000000020 ---[ end trace a09314c24f037648 ]--- Reported-by: Shuoran Liu <liushuoran@huawei.com> Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: fix to avoid overflow when left shifting page offsetChao Yu2017-02-221-2/+3
| | | | | | | | | | | | We use following method to calculate size with current page index: size = index << PAGE_SHIFT If type of index has only 32-bits size, left shifting will incur overflow, which makes result incorrect. So let's cast index with 64-bits type to avoid such issue. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: enhance lookup xattrChao Yu2017-02-222-18/+121
| | | | | | | | | | | | Previously, in getxattr we will load all entries both in inline xattr and xattr node block, and then do the lookup in all entries, but our lookup flow shows low efficiency, since if we can lookup and hit in inline xattr of inode page cache first, we don't need to load and lookup xattr node block, which can obviously save cpu time and IO latency. Signed-off-by: Chao Yu <yuchao0@huawei.com> [Jaegeuk Kim: initialize NULL to avoid warning] Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* Doc: f2fs: Fix typo in Documentation/filesystems/f2fs.txtMasanari Iida2017-02-221-1/+1
| | | | | | | This patch fix a typo in f2fs.txt Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: fix a dead loop in f2fs_fiemap()Wei Fang2017-02-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A dead loop can be triggered in f2fs_fiemap() using the test case as below: ... fd = open(); fallocate(fd, 0, 0, 4294967296); ioctl(fd, FS_IOC_FIEMAP, fiemap_buf); ... It's caused by an overflow in __get_data_block(): ... bh->b_size = map.m_len << inode->i_blkbits; ... map.m_len is an unsigned int, and bh->b_size is a size_t which is 64 bits on 64 bits archtecture, type conversion from an unsigned int to a size_t will result in an overflow. In the above-mentioned case, bh->b_size will be zero, and f2fs_fiemap() will call get_data_block() at block 0 again an again. Fix this by adding a force conversion before left shift. Signed-off-by: Wei Fang <fangwei1@huawei.com> Acked-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: do not preallocate blocks which has wrong bufferJaegeuk Kim2017-02-223-2/+13
| | | | | | | | | | | Sheng Yong reports needless preallocation if write(small_buffer, large_size) is called. In that case, f2fs preallocates large_size, but vfs returns early due to small_buffer size. Let's detect it before preallocation phase in f2fs. Reported-by: Sheng Yong <shengyong1@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: show # of on-going flush and discard biosJaegeuk Kim2017-02-223-3/+17
| | | | | | | This patch adds stat information for flush and discard commands. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: add a kernel thread to issue discard commands asynchronouslyJaegeuk Kim2017-02-222-31/+109
| | | | | | | | | This patch adds a kernel thread to issue discard commands. It proposes three states, D_PREP, D_SUBMIT, and D_DONE to identify current bio status. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: factor out discard command info into discard_cmd_controlJaegeuk Kim2017-02-224-22/+69
| | | | | | | This patch adds discard_cmd_control with the existing discarding controls. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: reorganize stat informationJaegeuk Kim2017-02-221-4/+4
| | | | | | | This patch modifies stat information more clearly. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: clean up flush/discard command namingsJaegeuk Kim2017-02-223-61/+59
| | | | | | | This patch simply cleans up the names for flush/discard commands. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: check in-memory sit version bitmapChao Yu2017-02-222-4/+30
| | | | | | | | | This patch adds a mirror for sit version bitmap, and use it to detect in-memory bitmap corruption which may be caused by bit-transition of cache or memory overflow. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: check in-memory nat version bitmapChao Yu2017-02-223-0/+29
| | | | | | | | | This patch adds a mirror for nat version bitmap, and use it to detect in-memory bitmap corruption which may be caused by bit-transition of cache or memory overflow. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: check in-memory block bitmapChao Yu2017-02-222-2/+36
| | | | | | | | | This patch adds a mirror for valid block bitmap, and use it to detect in-memory bitmap corruption which may be caused by bit-transition of cache or memory overflow. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: introduce FI_ATOMIC_COMMITChao Yu2017-02-225-9/+26
| | | | | | | | | | | This patch introduces a new flag to indicate inode status of doing atomic write committing, so that, we can keep atomic write status for inode during atomic committing, then we can skip GCing pages of atomic write inode, that avoids random GCed datas being mixed with current transaction, so isolation of transaction can be kept. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: clean up with list_{first, last}_entryChao Yu2017-02-223-5/+5
| | | | | Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: return fs_trim if there is no candidateJaegeuk Kim2017-02-223-5/+34
| | | | | | | | If there is no candidate to submit discard command during f2fs_trim_fs, let's return without checkpoint. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: avoid needless checkpoint in f2fs_trim_fsJaegeuk Kim2017-02-221-8/+9
| | | | | | | | | The f2fs_trim_fs() doesn't need to do checkpoint if there are newly allocated data blocks only which didn't change the critical checkpoint data such as nat and sit entries. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: relax async discard commands moreJaegeuk Kim2017-01-294-11/+27
| | | | | | | | | | | | | | | | | This patch relaxes async discard commands to avoid waiting its end_io during checkpoint. Instead of waiting them during checkpoint, it will be done when actually reusing them. Test on initial partition of nvme drive. # time fstrim /mnt/test Before : 6.158s After : 4.822s Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: drop exist_data for inline_data when truncated to 0Jaegeuk Kim2017-01-291-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A test program gets the SEEK_DATA with two values between a new created file and the exist file on f2fs filesystem. F2FS filesystem, (the first "test1" is a new file) SEEK_DATA size != 0 (offset = 8192) SEEK_DATA size != 0 (offset = 4096) PNFS filesystem, (the first "test1" is a new file) SEEK_DATA size != 0 (offset = 4096) SEEK_DATA size != 0 (offset = 4096) int main(int argc, char **argv) { char *filename = argv[1]; int offset = 1, i = 0, fd = -1; if (argc < 2) { printf("Usage: %s f2fsfilename\n", argv[0]); return -1; } /* if (!access(filename, F_OK) || errno != ENOENT) { printf("Needs a new file for test, %m\n"); return -1; }*/ fd = open(filename, O_RDWR | O_CREAT, 0777); if (fd < 0) { printf("Create test file %s failed, %m\n", filename); return -1; } for (i = 0; i < 20; i++) { offset = 1 << i; ftruncate(fd, 0); lseek(fd, offset, SEEK_SET); write(fd, "test", 5); /* Get the alloc size by seek data equal zero*/ if (lseek(fd, 0, SEEK_DATA)) { printf("SEEK_DATA size != 0 (offset = %d)\n", offset); break; } } close(fd); return 0; } Reported-and-Tested-by: Kinglong Mee <kinglongmee@gmail.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: don't allow encrypted operations without keysJaegeuk Kim2017-01-291-0/+12
| | | | | | | | | | This patch fixes the renaming bug on encrypted filenames, which was pointed by (ext4: don't allow encrypted operations without keys) Cc: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: show the max number of atomic operationsJaegeuk Kim2017-01-294-2/+31
| | | | | | | | This patch adds to show the max number of atomic operations which are conducting concurrently. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: get io size bit from mount optionJaegeuk Kim2017-01-292-0/+24
| | | | | | This patch adds to set io_size_bits from mount option. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: support IO alignment for DATA and NODE writesJaegeuk Kim2017-01-296-6/+84
| | | | | | | | | | | | | | | This patch implements IO alignment by filling dummy blocks in DATA and NODE write bios. If we can guarantee, for example, 32KB or 64KB for such the IOs, we can eliminate underlying dummy page problem which FTL conducts in order to close MLC or TLC partial written pages. Note that, - it requires "-o mode=lfs". - IO size should be power of 2, not exceed BIO_MAX_PAGES, 256. - read IO is still 4KB. - do checkpoint at fsync, if dummy NODE page was written. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: add submit_bio tracepointJaegeuk Kim2017-01-292-19/+38
| | | | | | | This patch adds final submit_bio() tracepoint. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: fix wrong tracepoints for op and op_flagsJaegeuk Kim2017-01-291-16/+25
| | | | | | | This patch fixes wrong tracepoints in terms of op and op_flags. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: reassign new segment for mode=lfsJaegeuk Kim2017-01-291-3/+0
| | | | | | Otherwise we can remain wrong curseg->next_blkoff, resulting in fsck failure. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: fix a missing discard prefree segmentsYunlei He2017-01-291-1/+9
| | | | | | | | | If userspace issue a fstrim with a range not involve prefree segments, it will reuse these segments without discard. This patch fix it. Signed-off-by: Yunlei He <heyunlei@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: use rb_entry_safeGeliang Tang2017-01-291-11/+6
| | | | | | | Use rb_entry_safe() instead of open-coding it. Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: add a case of no need to read a page in write beginYunlei He2017-01-291-1/+6
| | | | | | | | | If the range we write cover the whole valid data in the last page, we do not need to read it. Signed-off-by: Yunlei He <heyunlei@huawei.com> [Jaegeuk Kim: nullify the remaining area (fix: xfstests/f2fs/001)] Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: fix a problem of using memory after freeYunlei He2017-01-291-2/+3
| | | | | | | | | | | This patch fix a problem of using memory after free in function __try_merge_extent_node. Fixes: 0f825ee6e873 ("f2fs: add new interfaces for extent tree") Cc: <stable@vger.kernel.org> Signed-off-by: Yunlei He <heyunlei@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: remove unneeded conditionDan Carpenter2017-01-291-3/+3
| | | | | | | | We checked that "inode" is not an error pointer earlier so there is no need to check again here. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: don't cache nat entry if out of memoryChao Yu2017-01-291-7/+20
| | | | | | | | | If we run out of memory, in cache_nat_entry, it's better to avoid loop for allocating memory to cache nat entry, so in low memory scenario, for read path of node block, I expect this can avoid unneeded latency. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: remove unused values in recover_fsync_dataYunlei He2017-01-291-4/+0
| | | | | | | This patch remove unused values in function recover_fsync_data Signed-off-by: Yunlei He <heyunlei@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* Merge branch 'i2c/for-current' of ↵Linus Torvalds2017-01-282-4/+24
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c fixes from Wolfram Sang: "Two I2C driver bugfixes. The 'VLLS mode support' patch should have been entitled 'reconfigure pinctrl after suspend' to make the bugfix more clear. Sorry, I missed that, yet didn't want to rebase" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: imx-lpi2c: add VLLS mode support i2c: i2c-cadence: Initialize configuration before probing devices
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