- 20 1月, 2014 1 次提交
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由 Chris Fries 提交于
Fixed a variety of trivial checkpatch warnings. The only delta should be some minor formatting on log strings that were split / too long. Signed-off-by: NChris Fries <cfries@motorola.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 16 1月, 2014 2 次提交
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由 Changman Lee 提交于
Doing sync_meta_pages with META_FLUSH when checkpoint, we overide rw using WRITE_FLUSH_FUA. At this time, we also should set REQ_META|REQ_PRIO. Signed-off-by: NChangman Lee <cm224.lee@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
This patch should resolve the following bug. ========================================================= [ INFO: possible irq lock inversion dependency detected ] 3.13.0-rc5.f2fs+ #6 Not tainted --------------------------------------------------------- kswapd0/41 just changed the state of lock: (&sbi->gc_mutex){+.+.-.}, at: [<ffffffffa030503e>] f2fs_balance_fs+0xae/0xd0 [f2fs] but this lock took another, RECLAIM_FS-READ-unsafe lock in the past: (&sbi->cp_rwsem){++++.?} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Chain exists of: &sbi->gc_mutex --> &sbi->cp_mutex --> &sbi->cp_rwsem Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sbi->cp_rwsem); local_irq_disable(); lock(&sbi->gc_mutex); lock(&sbi->cp_mutex); <Interrupt> lock(&sbi->gc_mutex); *** DEADLOCK *** This bug is due to the f2fs_balance_fs call in f2fs_write_data_page. If f2fs_write_data_page is triggered by wbc->for_reclaim via kswapd, it should not call f2fs_balance_fs which tries to get a mutex grabbed by original syscall flow. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 14 1月, 2014 1 次提交
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由 Yuan Zhong 提交于
"boo sync" parameter is never referenced in f2fs_wait_on_page_writeback. We should remove this parameter. Signed-off-by: NYuan Zhong <yuan.mark.zhong@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 06 1月, 2014 3 次提交
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由 Jaegeuk Kim 提交于
The get_dnode_of_data nullifies inode and node page when error is occurred. There are two cases that passes inode page into get_dnode_of_data(). 1. make_empty_dir() -> get_new_data_page() -> f2fs_reserve_block(ipage) -> get_dnode_of_data() 2. f2fs_convert_inline_data() -> __f2fs_convert_inline_data() -> f2fs_reserve_block(ipage) -> get_dnode_of_data() This patch adds correct error handling codes when get_dnode_of_data() returns an error. At first, f2fs_reserve_block() calls f2fs_put_dnode() whenever reserve_new_block returns an error. So, the rule of f2fs_reserve_block() is to nullify inode page when there is any error internally. Finally, two callers of f2fs_reserve_block() should call f2fs_put_dnode() appropriately if they got an error since successful f2fs_reserve_block(). Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
Change log from v1: o handle NULL pointer of grab_cache_page_write_begin() pointed by Chao Yu. This patch refactors f2fs_convert_inline_data to check a couple of conditions internally for deciding whether it needs to convert inline_data or not. So, the new f2fs_convert_inline_data initially checks: 1) f2fs_has_inline_data(), and 2) the data size to be changed. If the inode has inline_data but the size to fill is less than MAX_INLINE_DATA, then we don't need to convert the inline_data with data allocation. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
In f2fs_write_begin(), if f2fs_conver_inline_data() returns an error like -ENOSPC, f2fs should call f2fs_put_page(). Otherwise, it is remained as a locked page, resulting in the following bug. [<ffffffff8114657e>] sleep_on_page+0xe/0x20 [<ffffffff81146567>] __lock_page+0x67/0x70 [<ffffffff81157d08>] truncate_inode_pages_range+0x368/0x5d0 [<ffffffff81157ff5>] truncate_inode_pages+0x15/0x20 [<ffffffff8115804b>] truncate_pagecache+0x4b/0x70 [<ffffffff81158082>] truncate_setsize+0x12/0x20 [<ffffffffa02a1842>] f2fs_setattr+0x72/0x270 [f2fs] [<ffffffff811cdae3>] notify_change+0x213/0x400 [<ffffffff811ab376>] do_truncate+0x66/0xa0 [<ffffffff811ab541>] vfs_truncate+0x191/0x1b0 [<ffffffff811ab5bc>] do_sys_truncate+0x5c/0xa0 [<ffffffff811ab78e>] SyS_truncate+0xe/0x10 [<ffffffff81756052>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 26 12月, 2013 3 次提交
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由 Huajun Li 提交于
Hook inline data read/write, truncate, fallocate, setattr, etc. Files need meet following 2 requirement to inline: 1) file size is not greater than MAX_INLINE_DATA; 2) file doesn't pre-allocate data blocks by fallocate(). FI_INLINE_DATA will not be set while creating a new regular inode because most of the files are bigger than ~3.4K. Set FI_INLINE_DATA only when data is submitted to block layer, ranther than set it while creating a new inode, this also avoids converting data from inline to normal data block and vice versa. While writting inline data to inode block, the first data block should be released if the file has a block indexed by i_addr[0]. On the other hand, when a file operation is appied to a file with inline data, we need to test if this file can remain inline by doing this operation, otherwise it should be convert into normal file by reserving a new data block, copying inline data to this new block and clear FI_INLINE_DATA flag. Because reserve a new data block here will make use of i_addr[0], if we save inline data in i_addr[0..872], then the first 4 bytes would be overwriten. This problem can be avoided simply by not using i_addr[0] for inline data. Signed-off-by: NHuajun Li <huajun.li@intel.com> Signed-off-by: NHaicheng Li <haicheng.li@linux.intel.com> Signed-off-by: NWeihong Xu <weihong.xu@intel.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
The f2fs supports 4KB block size. If user requests dwrite with under 4KB data, it allocates a new 4KB data block. However, f2fs doesn't add zero data into the untouched data area inside the newly allocated data block. This incurs an error during the xfstest #263 test as follow. 263 12s ... [failed, exit status 1] - output mismatch (see 263.out.bad) --- 263.out 2013-03-09 03:37:15.043967603 +0900 +++ 263.out.bad 2013-12-27 04:20:39.230203114 +0900 @@ -1,3 +1,976 @@ QA output created by 263 fsx -N 10000 -o 8192 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z -fsx -N 10000 -o 128000 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z +fsx -N 10000 -o 8192 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z +truncating to largest ever: 0x12a00 +truncating to largest ever: 0x75400 +fallocating to largest ever: 0x79cbf ... (Run 'diff -u 263.out 263.out.bad' to see the entire diff) Ran: 263 Failures: 263 Failed 1 of 1 tests It turns out that, when the test tries to write 2KB data with dio, the new dio path allocates 4KB data block without filling zero data inside the remained 2KB area. Finally, the output file contains a garbage data for that region. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
When get_dnode_of_data() in get_data_block() returns a successful dnode, we should put the dnode. But, previously, if its data block address is equal to NEW_ADDR, we didn't do that, resulting in a deadlock condition. So, this patch splits original error conditions with this case, and then calls f2fs_put_dnode before finishing the function. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 23 12月, 2013 19 次提交
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由 Chao Yu 提交于
Update several comments: 1. use f2fs_{un}lock_op install of mutex_{un}lock_op. 2. update comment of get_data_block(). 3. update description of node offset. Signed-off-by: NChao Yu <chao2.yu@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Gu Zheng 提交于
When using the f2fs_io_info in the low level, we still need to merge the rw and rw_flag, so use the rw to hold all the io flags directly, and remove the rw_flag field. ps.It is based on the previous patch: f2fs: move all the bio initialization into __bio_alloc Signed-off-by: NGu Zheng <guz.fnst@cn.fujitsu.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Gu Zheng 提交于
Move all the bio initialization into __bio_alloc, and some minor cleanups are also added. v3: Use 'bool' rather than 'int' as Kim suggested. v2: Use 'is_read' rather than 'rw' as Yu Chao suggested. Remove the needless initialization of bio->bi_private. Signed-off-by: NGu Zheng <guz.fnst@cn.fujitsu.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
Previously, f2fs doesn't support direct IOs with high performance, which throws every write requests via the buffered write path, resulting in highly performance degradation due to memory opeations like copy_from_user. This patch introduces a new direct IO path in which every write requests are processed by generic blockdev_direct_IO() with enhanced get_block function. The get_data_block() in f2fs handles: 1. if original data blocks are allocates, then give them to blockdev. 2. otherwise, a. preallocate requested block addresses b. do not use extent cache for better performance c. give the block addresses to blockdev This policy induces that: - new allocated data are sequentially written to the disk - updated data are randomly written to the disk. - f2fs gives consistency on its file meta, not file data. Reviewed-by: NChao Yu <chao2.yu@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
We need to get a trace before submit_bio, since its bi_sector is remapped during the submit_bio. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
This patch introduces f2fs_io_info to mitigate the complex parameter list. struct f2fs_io_info { enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ int rw; /* contains R/RS/W/WS */ int rw_flag; /* contains REQ_META/REQ_PRIO */ } 1. f2fs_write_data_pages - DATA - WRITE_SYNC is set when wbc->WB_SYNC_ALL. 2. sync_node_pages - NODE - WRITE_SYNC all the time 3. sync_meta_pages - META - WRITE_SYNC all the time - REQ_META | REQ_PRIO all the time ** f2fs_submit_merged_bio() handles META_FLUSH. 4. ra_nat_pages, ra_sit_pages, ra_sum_pages - META - READ_SYNC Cc: Fan Li <fanofcode.li@samsung.com> Cc: Changman Lee <cm224.lee@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Fan Li 提交于
Previously f2fs submits most of write requests using WRITE_SYNC, but f2fs_write_data_pages submits last write requests by sync_mode flags callers pass. This causes a performance problem since continuous pages with different sync flags can't be merged in cfq IO scheduler(thanks yu chao for pointing it out), and synchronous requests often take more time. This patch makes the following modifies to DATA writebacks: 1. every page will be written back using the sync mode caller pass. 2. only pages with the same sync mode can be merged in one bio request. These changes are restricted to DATA pages.Other types of writebacks are modified To remain synchronous. In my test with tiotest, f2fs sequence write performance is improved by about 7%-10% , and this patch has no obvious impact on other performance tests. Signed-off-by: NFan Li <fanofcode.li@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
This patch adds unlikely() macro into the most of codes. The basic rule is to add that when: - checking unusual errors, - checking page mappings, - and the other unlikely conditions. Change log from v1: - Don't add unlikely for the NULL test and error test: advised by Andi Kleen. Cc: Chao Yu <chao2.yu@samsung.com> Cc: Andi Kleen <andi@firstfloor.org> Reviewed-by: NChao Yu <chao2.yu@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Chao Yu 提交于
As we know, some of our branch condition will rarely be true. So we could add 'unlikely' to let compiler optimize these code, by this way we could drop unneeded 'jump' assemble code to improve performance. change log: o add *unlikely* as many as possible across the whole source files at once suggested by Jaegeuk Kim. Suggested-by: NJaegeuk Kim <jaegeuk.kim@samsung.com> Signed-off-by: NChao Yu <chao2.yu@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
This patch integrates redundant bio operations on read and write IOs. 1. Move bio-related codes to the top of data.c. 2. Replace f2fs_submit_bio with f2fs_submit_merged_bio, which handles read bios additionally. 3. Introduce __submit_merged_bio to submit the merged bio. 4. Change f2fs_readpage to f2fs_submit_page_bio. 5. Introduce f2fs_submit_page_mbio to integrate previous submit_read_page and submit_write_page. Reviewed-by: NGu Zheng <guz.fnst@cn.fujitsu.com> Reviewed-by: Chao Yu <chao2.yu@samsung.com > Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Chao Yu 提交于
We should return error if we do not get an updated page in find_date_page when f2fs_readpage failed. Signed-off-by: NChao Yu <chao2.yu@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
This patch fixes some bit overflows by the shift operations. Dan Carpenter reported potential bugs on bit overflows as follows. fs/f2fs/segment.c:910 submit_write_page() warn: should 'blk_addr << ((sbi)->log_blocksize - 9)' be a 64 bit type? fs/f2fs/checkpoint.c:429 get_valid_checkpoint() warn: should '1 << ()' be a 64 bit type? fs/f2fs/data.c:408 f2fs_readpage() warn: should 'blk_addr << ((sbi)->log_blocksize - 9)' be a 64 bit type? fs/f2fs/data.c:457 submit_read_page() warn: should 'blk_addr << ((sbi)->log_blocksize - 9)' be a 64 bit type? fs/f2fs/data.c:525 get_data_block_ro() warn: should 'i << blkbits' be a 64 bit type? Bug-Reported-by: NDan Carpenter <dan.carpenter@oracle.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Huajun Li 提交于
Add the function f2fs_reserve_block() to easily reserve new blocks, and use it to clean up more codes. Signed-off-by: NHuajun Li <huajun.li@intel.com> Signed-off-by: NHaicheng Li <haicheng.li@linux.intel.com> Signed-off-by: NWeihong Xu <weihong.xu@intel.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Chao Yu 提交于
This patch adds a tracepoint for f2fs_submit_read_bio. Signed-off-by: NChao Yu <chao2.yu@samsung.com> [Jaegeuk Kim: integrate tracepoints of f2fs_submit_read(_write)_bio] Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Chao Yu 提交于
This patch adds a tracepoint for submit_read_page. Signed-off-by: NChao Yu <chao2.yu@samsung.com> [Jaegeuk Kim: integrate tracepoints of f2fs_submit_read(_write)_page] Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Chao Yu 提交于
For better read performance, we add a new function to support for merging contiguous read as the one for write. v1-->v2: o add declarations here as Gu Zheng suggested. o use new structure f2fs_bio_info introduced by Jaegeuk Kim. Signed-off-by: NChao Yu <chao2.yu@samsung.com> Acked-by: NGu Zheng <guz.fnst@cn.fujitsu.com>
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由 Jaegeuk Kim 提交于
The f2fs manages an extent cache to search a number of consecutive data blocks very quickly. However it conducts unnecessary cache operations if the file is highly fragmented with no valid extent cache. In such the case, we don't need to handle the extent cache, but just can disable the cache facility. Nevertheless, this patch gives one more chance to enable the extent cache. For example, 1. create a file 2. write data sequentially which produces a large valid extent cache 3. update some data, resulting in a fragmented extent 4. if the fragmented extent is too small, then drop extent cache 5. close the file 6. open the file again 7. give another chance to make a new extent cache 8. write data sequentially again which creates another big extent cache. ... Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
This patch removes an unnecessary semaphore (i.e., sbi->bio_sem). There is no reason to use the semaphore when f2fs submits read and write IOs. Instead, let's use a write mutex and cover the sbi->bio[] by the lock. Change log from v1: o split write_mutex suggested by Chao Yu Chao described, "All DATA/NODE/META bio buffers in superblock is protected by 'sbi->write_mutex', but each bio buffer area is independent, So we should split write_mutex to three for DATA/NODE/META." Signed-off-by: NChao Yu <chao2.yu@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Chao Yu 提交于
We should use f2fs_put_page to release page for uniform style of f2fs code. Signed-off-by: NChao Yu <chao2.yu@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 29 10月, 2013 1 次提交
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由 Jaegeuk Kim 提交于
If you want to remove unnecessary BUG_ONs, you can just turn off F2FS_CHECK_FS in your kernel config. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 25 10月, 2013 2 次提交
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由 Jaegeuk Kim 提交于
This patch adds a tracepoint for set_page_dirty. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
This patch cleans up improper definitions that update some status information. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 07 10月, 2013 1 次提交
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由 Gu Zheng 提交于
The fs_locks is used to block other ops(ex, recovery) when doing checkpoint. And each other operate routine(besides checkpoint) needs to acquire a fs_lock, there is a terrible problem here, if these are too many concurrency threads acquiring fs_lock, so that they will block each other and may lead to some performance problem, but this is not the phenomenon we want to see. Though there are some optimization patches introduced to enhance the usage of fs_lock, but the thorough solution is using a *rw_sem* to replace the fs_lock. Checkpoint routine takes write_sem, and other ops take read_sem, so that we can block other ops(ex, recovery) when doing checkpoint, and other ops will not disturb each other, this can avoid the problem described above completely. Because of the weakness of rw_sem, the above change may introduce a potential problem that the checkpoint thread might get starved if other threads are intensively locking the read semaphore for I/O.(Pointed out by Xu Jin) In order to avoid this, a wait_list is introduced, the appending read semaphore ops will be dropped into the wait_list if checkpoint thread is waiting for write semaphore, and will be waked up when checkpoint thread gives up write semaphore. Thanks to Kim's previous review and test, and will be very glad to see other guys' performance tests about this patch. V2: -fix the potential starvation problem. -use more suitable func name suggested by Xu Jin. Signed-off-by: NGu Zheng <guz.fnst@cn.fujitsu.com> [Jaegeuk Kim: adjust minor coding standard] Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 26 8月, 2013 1 次提交
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由 Jaegeuk Kim 提交于
This patch enables the number of direct pointers inside on-disk inode block to be changed dynamically according to the size of inline xattr space. The number of direct pointers, ADDRS_PER_INODE, can be changed only if the file has inline xattr flag. The number of direct pointers that will be used by inline xattrs is defined as F2FS_INLINE_XATTR_ADDRS. Current patch assigns F2FS_INLINE_XATTR_ADDRS to 0 temporarily. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 20 8月, 2013 1 次提交
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由 Jaegeuk Kim 提交于
This patch removes a false-alaramed BUG_ON. The previous BUG_ON condition didn't cover the following true scenario. In f2fs_add_link, 1) get_new_data_page gives an uptodate page successfully, and then, 2) init_inode_metadata returns -ENOSPC. At this moment, a new clean data page is remained in the page cache, but its block address still indicates NEW_ADDR. After then, even if sync is called, this clean data page cannot be written to the disk due to the clean state. So this means that get_lock_data_page should make a new empty page when its block address is NEW_ADDR and its page is not uptodated. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 12 8月, 2013 1 次提交
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由 Gu Zheng 提交于
Signed-off-by: NGu Zheng <guz.fnst@cn.fujitsu.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 06 8月, 2013 2 次提交
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由 Jin Xu 提交于
This patch fixes a deadlock bug that occurs quite often when there are concurrent write and fsync on a same file. Following is the simplified call trace when tasks get hung. fsync thread: - f2fs_sync_file ... - f2fs_write_data_pages ... - update_extent_cache ... - update_inode - wait_on_page_writeback bdi writeback thread - __writeback_single_inode - f2fs_write_data_pages - mutex_lock(sbi->writepages) The deadlock happens when the fsync thread waits on a inode page that has been added to the f2fs' cached bio sbi->bio[NODE], and unfortunately, no one else could be able to submit the cached bio to block layer for writeback. This is because the fsync thread already hold a sbi->fs_lock and the sbi->writepages lock, causing the bdi thread being blocked when attempt to write data pages for the same inode. At the same time, f2fs_gc thread does not notice the situation and could not help. Even the sync syscall gets blocked. To fix it, we could submit the cached bio first before waiting on a inode page that is being written back. Signed-off-by: NJin Xu <jinuxstyle@gmail.com> [Jaegeuk Kim: add more cases to use f2fs_wait_on_page_writeback] Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Namjae Jeon 提交于
This code is being used for nobh_write_end() function. But since now f2fs_write_end function is added so there is no need for this code. Signed-off-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NPankaj Kumar <pankaj.km@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 31 7月, 2013 1 次提交
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由 Dan Carpenter 提交于
This kfree() is no longer needed after a79dc083d7 "f2fs: move bio_private allocation out of f2fs_bio_alloc()". The "bio->bi_private" is NULL here so it's a no-op. Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 30 7月, 2013 1 次提交
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由 Gu Zheng 提交于
bio->bi_private is not always needed. As in the reading data path, end_read_io does not need bio_private for further using, so moving bio_private allocation out of f2fs_bio_alloc(). Alloc it in the submit_write_page(), and ignore it in the f2fs_readpage(). Signed-off-by: NGu Zheng <guz.fnst@cn.fujitsu.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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