- 10 1月, 2015 4 次提交
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由 Jaegeuk Kim 提交于
In the normal case, the radix_tree_nodes are freed successfully. But, when cp_error was detected, we should destroy them forcefully. Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
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由 Jaegeuk Kim 提交于
In do_recover_data, we find and update previous node pages after updating its new block addresses. After then, we call fill_node_footer without reset field, we erase its cold bit so that this new cold node block is written to wrong log area. This patch fixes not to miss its old flag. Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
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由 Chao Yu 提交于
This patch moves one member of struct nat_entry: _flag_ to struct node_info, so _version_ in struct node_info and _flag_ which are unsigned char type will merge to one 32-bit space in register/memory. So the size of nat_entry will be reduced from 28 bytes to 24 bytes (for 64-bit machine, reduce its size from 40 bytes to 32 bytes) and then slab memory using by f2fs will be reduced. changes from v2: o update description of memory usage gain for 64-bit machine suggested by Changman Lee. changes from v1: o introduce inline copy_node_info() to copy valid data from node info suggested by Jaegeuk Kim, it can avoid bug. Reviewed-by: NChangman Lee <cm224.lee@samsung.com> Signed-off-by: NChao Yu <chao2.yu@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
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由 Jaegeuk Kim 提交于
This patch adds two new ioctls to release inmemory pages grabbed by atomic writes. o f2fs_ioc_abort_volatile_write - If transaction was failed, all the grabbed pages and data should be written. o f2fs_ioc_release_volatile_write - This is to enhance the performance of PERSIST mode in sqlite. In order to avoid huge memory consumption which causes OOM, this patch changes volatile writes to use normal dirty pages, instead blocked flushing to the disk as long as system does not suffer from memory pressure. Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
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- 07 11月, 2014 1 次提交
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由 Jaegeuk Kim 提交于
This patch adds to control the memory footprint used by ino entries. This will conduct best effort, not strictly. Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
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- 04 11月, 2014 1 次提交
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由 Gu Zheng 提交于
Introduce f2fs_change_bit to simplify the change bit logic in function set_to_next_nat{sit}. Signed-off-by: NGu Zheng <guz.fnst@cn.fujitsu.com> Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
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- 06 10月, 2014 1 次提交
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由 Jaegeuk Kim 提交于
Don't return any value without any usage. Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
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- 01 10月, 2014 1 次提交
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由 Jaegeuk Kim 提交于
Previously, f2fs tries to reorganize the dirty nat entries into multiple sets according to its nid ranges. This can improve the flushing nat pages, however, if there are a lot of cached nat entries, it becomes a bottleneck. This patch introduces a new set management flow by removing dirty nat list and adding a series of set operations when the nat entry becomes dirty. Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
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- 24 9月, 2014 2 次提交
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由 Jaegeuk Kim 提交于
This patch revisited whole the recovery information during the f2fs_sync_file. In this patch, there are three information to make a decision. a) IS_CHECKPOINTED, /* is it checkpointed before? */ b) HAS_FSYNCED_INODE, /* is the inode fsynced before? */ c) HAS_LAST_FSYNC, /* has the latest node fsync mark? */ And, the scenarios for our rule are based on: [Term] F: fsync_mark, D: dentry_mark 1. inode(x) | CP | inode(x) | dnode(F) 2. inode(x) | CP | inode(F) | dnode(F) 3. inode(x) | CP | dnode(F) | inode(x) | inode(F) 4. inode(x) | CP | dnode(F) | inode(F) 5. CP | inode(x) | dnode(F) | inode(DF) 6. CP | inode(DF) | dnode(F) 7. CP | dnode(F) | inode(DF) 8. CP | dnode(F) | inode(x) | inode(DF) For example, #3, the three conditions should be changed as follows. inode(x) | CP | dnode(F) | inode(x) | inode(F) a) x o o o o b) x x x x o c) x o o x o If f2fs_sync_file stops ------^, it should write inode(F) --------------^ So, the need_inode_block_update should return true, since c) get_nat_flag(e, HAS_LAST_FSYNC), is false. For example, #8, CP | alloc | dnode(F) | inode(x) | inode(DF) a) o x x x x b) x x x o c) o o x o If f2fs_sync_file stops -------^, it should write inode(DF) --------------^ Note that, the roll-forward policy should follow this rule, which means, if there are any missing blocks, we doesn't need to recover that inode. Signed-off-by: NHuang Ying <ying.huang@intel.com> Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
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由 Jaegeuk Kim 提交于
This patch introduces a flag in the nat entry structure to merge various information such as checkpointed and fsync_done marks. Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
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- 16 9月, 2014 1 次提交
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由 Huang Ying 提交于
The nm_i->fcnt checking is executed before spin_lock, so if another thread delete the last free_nid from the list, the wrong nid may be gotten. So fix the race condition by moving the nm_i->fnct checking into spin_lock. Signed-off-by: NHuang, Ying <ying.huang@intel.com> Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
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- 04 9月, 2014 1 次提交
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由 Jaegeuk Kim 提交于
This patch adds three inline functions to clean up dirty casting codes. Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
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- 10 7月, 2014 1 次提交
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由 Chao Yu 提交于
Although building NAT journal in cursum reduce the read/write work for NAT block, but previous design leave us lower performance when write checkpoint frequently for these cases: 1. if journal in cursum has already full, it's a bit of waste that we flush all nat entries to page for persistence, but not to cache any entries. 2. if journal in cursum is not full, we fill nat entries to journal util journal is full, then flush the left dirty entries to disk without merge journaled entries, so these journaled entries may be flushed to disk at next checkpoint but lost chance to flushed last time. In this patch we merge dirty entries located in same NAT block to nat entry set, and linked all set to list, sorted ascending order by entries' count of set. Later we flush entries in sparse set into journal as many as we can, and then flush merged entries to disk. In this way we can not only gain in performance, but also save lifetime of flash device. In my testing environment, it shows this patch can help to reduce NAT block writes obviously. In hard disk test case: cost time of fsstress is stablely reduced by about 5%. 1. virtual machine + hard disk: fsstress -p 20 -n 200 -l 5 node num cp count nodes/cp based 4599.6 1803.0 2.551 patched 2714.6 1829.6 1.483 2. virtual machine + 32g micro SD card: fsstress -p 20 -n 200 -l 1 -w -f chown=0 -f creat=4 -f dwrite=0 -f fdatasync=4 -f fsync=4 -f link=0 -f mkdir=4 -f mknod=4 -f rename=5 -f rmdir=5 -f symlink=0 -f truncate=4 -f unlink=5 -f write=0 -S node num cp count nodes/cp based 84.5 43.7 1.933 patched 49.2 40.0 1.23 Our latency of merging op shows not bad when handling extreme case like: merging a great number of dirty nats: latency(ns) dirty nat count 3089219 24922 5129423 27422 4000250 24523 change log from v1: o fix wrong logic in add_nat_entry when grab a new nat entry set. o swith to create slab cache in create_node_manager_caches. o use GFP_ATOMIC instead of GFP_NOFS to avoid potential long latency. change log from v2: o make comment position more appropriate suggested by Jaegeuk Kim. Signed-off-by: NChao Yu <chao2.yu@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
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- 07 5月, 2014 4 次提交
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由 Zhang Zhen 提交于
fix the following checkpatch warning: WARNING: do {} while (0) macros should not be semicolon terminated Signed-off-by: NZhang Zhen <zhenzhang.zhang@huawei.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
This patch splits grab_cache_page_write_begin into grab_cache_page and wait_on_page_writeback for node pages. This patch intends to enhance the latency to get node pages by alleviating unnecessary wait_on_page_writeback. 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
If so many dirty dentry blocks are cached, not reached to the flush condition, we should fall into livelock in balance_dirty_pages. So, let's consider the mem size for the condition. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Chao Yu 提交于
This patch introduce raw_nat_from_node_info() to simplfy some codes, and also use exist function node_info_from_raw_nat() to do the same job. Signed-off-by: NChao Yu <chao2.yu@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 20 3月, 2014 3 次提交
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由 Jaegeuk Kim 提交于
If multiple redundant fsync calls are triggered, we don't need to write its node pages with fsync mark continuously. So, this patch adds FI_NEED_FSYNC to track whether the latest node block is written with the fsync mark or not. If the mark was set, a new fsync doesn't need to write a node block. Otherwise, we should do a new node block with the mark for roll-forward recovery. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
The NM_WOUT_THRESHOLD is now obsolete since f2fs starts to control on a basis of the memory footprint. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
This patch introduces ram_thresh, a sysfs entry, which controls the memory footprint used by the free nid list and the nat cache. Previously, the free nid list was controlled by MAX_FREE_NIDS, while the nat cache was managed by NM_WOUT_THRESHOLD. However, this approach cannot be applied dynamically according to the system. So, this patch adds ram_thresh that users can specify the threshold, which is in order of 1 / 1024. For example, if the total ram size is 4GB and the value is set to 10 by default, f2fs tries to control the number of free nids and nat caches not to consume over 10 * (4GB / 1024) = 10MB. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 18 3月, 2014 1 次提交
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由 Chao Yu 提交于
This patch introduces a help function f2fs_has_xattr_block for better readability. Signed-off-by: NChao Yu <chao2.yu@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 24 2月, 2014 1 次提交
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由 Jaegeuk Kim 提交于
The nat cache entry maintains a status whether it is checkpointed or not. So, if a new cache entry is loaded from the last checkpoint, nat_entry->checkpointed should be true. If the cache entry is modified as being dirty, nat_entry->checkpoint should be false. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 23 12月, 2013 1 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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- 09 8月, 2013 1 次提交
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由 Jaegeuk Kim 提交于
This patch fixes the use of XATTR_NODE_OFFSET. o The offset should not use several MSB bits which are used by marking node blocks. o IS_DNODE should handle XATTR_NODE_OFFSET to avoid potential abnormality during the fsync call. 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
Introduce help function F2FS_NODE() to simplify the conversion of node_page to f2fs_node. Signed-off-by: NGu Zheng <guz.fnst@cn.fujitsu.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 14 6月, 2013 1 次提交
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由 Jaegeuk Kim 提交于
If a file is linked, f2fs loose its parent inode number so that fsync calls for the linked file should do checkpoint all the time. But, if we can recover its parent inode number after the checkpoint, we can adjust roll-forward mechanism for the further fsync calls, which is able to improve the fsync performance significatly. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 28 5月, 2013 1 次提交
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由 Namjae Jeon 提交于
There are various functions with common code which could be separated out to make common routines. So, made new routines and in order to retain the same call path and no major changes, written some macros to access those routines. Signed-off-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NAmit Sahrawat <a.sahrawat@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 09 4月, 2013 1 次提交
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由 Zhihui Zhang 提交于
If (ofs % (NIDS_PER_BLOCK + 1) == 0), the node is an indirect node block. Signed-off-by: NZhihui Zhang <zzhsuny@gmail.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 03 4月, 2013 1 次提交
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由 Jaegeuk Kim 提交于
In get_node_page, we do not need to call lock_page all the time. If the node page is cached as uptodate, 1. grab_cache_page locks the page, 2. read_node_page unlocks the page, and 3. lock_page is called for further process. Let's avoid this. Reviewed-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 27 3月, 2013 1 次提交
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由 Jaegeuk Kim 提交于
When we recover fsync'ed data after power-off-recovery, we should guarantee that any parent inode number should be correct for each direct inode blocks. So, let's make the following rules. - The fsync should do checkpoint to all the inodes that were experienced hard links. - So, the only normal files can be recovered by roll-forward. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 11 12月, 2012 3 次提交
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由 Jaegeuk Kim 提交于
As pointed out by Randy Dunlap, this patch removes all usage of "/**" for comment blocks. Instead, just use "/*". Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
This patch should resolve the bugs reported by the sparse tool. Initial reports were written by "kbuild test robot" managed by fengguang.wu. In my local machines, I've tested also by running: > make C=2 CF="-D__CHECK_ENDIAN__" Accordingly, I've found lots of warnings and bugs related to the endian conversion. And I've fixed all at this moment. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
This adds the following major in-memory structures in f2fs. - f2fs_sb_info: contains f2fs-specific information, two special inode pointers for node and meta address spaces, and orphan inode management. - f2fs_inode_info: contains vfs_inode and other fs-specific information. - f2fs_nm_info: contains node manager information such as NAT entry cache, free nid list, and NAT page management. - f2fs_node_info: represents a node as node id, inode number, block address, and its version. - f2fs_sm_info: contains segment manager information such as SIT entry cache, free segment map, current active logs, dirty segment management, and segment utilization. The specific structures are sit_info, free_segmap_info, dirty_seglist_info, curseg_info. In addition, add F2FS_SUPER_MAGIC in magic.h. Signed-off-by: NChul Lee <chur.lee@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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