- 23 4月, 2013 7 次提交
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由 Namjae Jeon 提交于
Add tracepoints to debug the various page write operation like data pages, meta pages. Signed-off-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NPankaj Kumar <pankaj.km@samsung.com> Acked-by: NSteven Rostedt <rostedt@goodmis.org> [Jaegeuk: remove unnecessary tracepoints] Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Namjae Jeon 提交于
Add tracepoints to debug the block allocation & fallocate. Signed-off-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NPankaj Kumar <pankaj.km@samsung.com> Acked-by: NSteven Rostedt <rostedt@goodmis.org> [Jaegeuk: enhance information] Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Namjae Jeon 提交于
Add tracepoints for tracing the garbage collector threads in f2fs with status of collection & type. Signed-off-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NPankaj Kumar <pankaj.km@samsung.com> Acked-by: NSteven Rostedt <rostedt@goodmis.org> [Jaegeuk: modify slightly to show information] Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Namjae Jeon 提交于
Add tracepoints for page i/o operations and block allocation tracing during page read operation. Signed-off-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NPankaj Kumar <pankaj.km@samsung.com> Acked-by: NSteven Rostedt <rostedt@goodmis.org> [Jaegeuk: combine and modify the tracepoint structures] Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Namjae Jeon 提交于
add tracepoints for tracing the truncate operations like truncate node/data blocks, f2fs_truncate etc. Tracepoints are added at entry and exit of operation to trace the success & failure of operation. Signed-off-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NPankaj Kumar <pankaj.km@samsung.com> Acked-by: NSteven Rostedt <rostedt@goodmis.org> [Jaegeuk: combine and modify the tracepoint structures] Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Namjae Jeon 提交于
Add tracepoints in f2fs for tracing the syncing operations like filesystem sync, file sync enter/exit. It will helf to trace the code under debugging scenarios. Also add tracepoints for tracing the various inode operations like building inode, eviction of inode, link/unlike of inodes. Signed-off-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NPankaj Kumar <pankaj.km@samsung.com> Acked-by: NSteven Rostedt <rostedt@goodmis.org> [Jaegeuk: combine and modify the tracepoint structures] Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Namjae Jeon 提交于
The code conditions put inside the function is_multimedia_file are reverse to the name i.e, we need to negate the return to actually check if the file is a multimedia file. So, change the code and usage path to align both the name and comparision conditions. 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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- 22 4月, 2013 1 次提交
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由 Wei Yongjun 提交于
Fix to return a negative error code from the error handling case instead of 0, as returned elsewhere in this function. Introduce by commit c0d39e(f2fs: fix return values from validate superblock) Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 09 4月, 2013 5 次提交
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由 Namjae Jeon 提交于
Fix typo mistakes. 1. I think that it should be 'L' instead of 'V'. 2. and try to fix 'Front' instead of 'Frone' 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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由 Jaegeuk Kim 提交于
In order to be aware of prefree and free sections during FG_GC, let's start with write_checkpoint(). Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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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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由 Jaegeuk Kim 提交于
In the previous version, f2fs uses global locks according to the usage types, such as directory operations, block allocation, block write, and so on. Reference the following lock types in f2fs.h. enum lock_type { RENAME, /* for renaming operations */ DENTRY_OPS, /* for directory operations */ DATA_WRITE, /* for data write */ DATA_NEW, /* for data allocation */ DATA_TRUNC, /* for data truncate */ NODE_NEW, /* for node allocation */ NODE_TRUNC, /* for node truncate */ NODE_WRITE, /* for node write */ NR_LOCK_TYPE, }; In that case, we lose the performance under the multi-threading environment, since every types of operations must be conducted one at a time. In order to address the problem, let's share the locks globally with a mutex array regardless of any types. So, let users grab a mutex and perform their jobs in parallel as much as possbile. For this, I propose a new global lock scheme as follows. 0. Data structure - f2fs_sb_info -> mutex_lock[NR_GLOBAL_LOCKS] - f2fs_sb_info -> node_write 1. mutex_lock_op(sbi) - try to get an avaiable lock from the array. - returns the index of the gottern lock variable. 2. mutex_unlock_op(sbi, index of the lock) - unlock the given index of the lock. 3. mutex_lock_all(sbi) - grab all the locks in the array before the checkpoint. 4. mutex_unlock_all(sbi) - release all the locks in the array after checkpoint. 5. block_operations() - call mutex_lock_all() - sync_dirty_dir_inodes() - grab node_write - sync_node_pages() Note that, the pairs of mutex_lock_op()/mutex_unlock_op() and mutex_lock_all()/mutex_unlock_all() should be used together. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jason Hrycay 提交于
Move the f2fs_balance_fs out of the truncate_hole function and only perform that in punch_hole use case. The commit: ed60b1644e7f7e5dd67d21caf7e4425dff05dad0 intended to do this but moved it into truncate_hole to cover more cases. However, a deadlock scenario is possible when deleting an inode entry under specific conditions: f2fs_delete_entry() mutex_lock_op(sbi, DENTRY_OPS); truncate_hole() f2fs_balance_fs() mutex_lock(&sbi->gc_mutex); f2fs_gc() write_checkpoint() block_operations() mutex_lock_op(sbi, DENTRY_OPS); Lets move it into the punch_hole case to cover the original intent of avoiding it during fallocate's expand_inode_data case. Change-Id: I29f8ea1056b0b88b70ba8652d901b6e8431bb27e Signed-off-by: NJason Hrycay <jason.hrycay@motorola.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 03 4月, 2013 12 次提交
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由 Jaegeuk Kim 提交于
This patch reduces redundant spin_lock operations in alloc_nid_failed(). The alloc_nid_failed() does not need to delete entry and add one again by triggering spin_lock and spin_unlock redundantly. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Changman Lee 提交于
o mkfs.f2fs supports no discard option. o fixed volume label size in 512 bytes. Signed-off-by: NChangman Lee <cm224.lee@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 P J P 提交于
Commit - fa9150a8 - replaces a call to generic_writepages() in f2fs_write_data_pages() with write_cache_pages(), with a function pointer argument pointing to routine: __f2fs_writepage. -> https://git.kernel.org/linus/fa9150a84ca333f68127097c4fa1eda4b3913a22 This patch adds a NULL pointer check in f2fs_write_data_pages() to avoid a possible NULL pointer dereference, in case if - mapping->a_ops->writepage - is NULL. Signed-off-by: NP J P <ppandit@redhat.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
Like below, there are 8 segment bitmaps for SSR victim candidates. enum dirty_type { DIRTY_HOT_DATA, /* dirty segments assigned as hot data logs */ DIRTY_WARM_DATA, /* dirty segments assigned as warm data logs */ DIRTY_COLD_DATA, /* dirty segments assigned as cold data logs */ DIRTY_HOT_NODE, /* dirty segments assigned as hot node logs */ DIRTY_WARM_NODE, /* dirty segments assigned as warm node logs */ DIRTY_COLD_NODE, /* dirty segments assigned as cold node logs */ DIRTY, /* to count # of dirty segments */ PRE, /* to count # of entirely obsolete segments */ NR_DIRTY_TYPE }; The upper 6 bitmaps indicates segments dirtied by active log areas respectively. And, the DIRTY bitmap integrates all the 6 bitmaps. For example, o DIRTY_HOT_DATA : 1010000 o DIRTY_WARM_DATA: 0100000 o DIRTY_COLD_DATA: 0001000 o DIRTY_HOT_NODE : 0000010 o DIRTY_WARM_NODE: 0000001 o DIRTY_COLD_NODE: 0000000 In this case, o DIRTY : 1111011, which means that we should guarantee the consistency between DIRTY and other bitmaps concreately. However, the SSR mode selects victims freely from any log types, which can set multiple bits across the various bitmap types. So, this patch eliminates this inconsistency. Reviewed-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
In order to do GC more reliably, I'd like to lock the vicitm summary page until its GC is completed, and also prevent any checkpoint process. Reviewed-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
This patch adds a new condition that allocates free segments in the current active section even if SSR is needed. Otherwise, f2fs cannot allocate remained free segments in the section since SSR finds dirty segments only. Reviewed-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
The foreground GCs are triggered under not enough free sections. So, we should not skip moving valid blocks in the victim segments. Reviewed-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
This patch removes a bitmap for victim segments selected by foreground GC, and modifies the other bitmap for victim segments selected by background GC. 1) foreground GC bitmap : We don't need to manage this, since we just only one previous victim section number instead of the whole victim history. The f2fs uses the victim section number in order not to allocate currently GC'ed section to current active logs. 2) background GC bitmap : This bitmap is used to avoid selecting victims repeatedly by background GCs. In addition, the victims are able to be selected by foreground GCs, since there is no need to read victim blocks during foreground GCs. By the fact that the foreground GC reclaims segments in a section unit, it'd be better to manage this bitmap based on the section granularity. Reviewed-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
When allocating a new segment under the LFS mode, we should keep the section boundary. Reviewed-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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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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由 Jaegeuk Kim 提交于
Let's use a macro to get the total number of sections. Reviewed-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
A macro should not use duplicate parameter names. Reviewed-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 31 3月, 2013 1 次提交
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由 Alexandru Gheorghiu 提交于
Use kmemdup instead of kzalloc and memcpy. Signed-off-by: NAlexandru Gheorghiu <gheorghiuandru@gmail.com> Acked-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 27 3月, 2013 4 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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由 Jaegeuk Kim 提交于
In the checkpoint flow, the f2fs investigates the total nat cache entries. Previously, if an entry has NULL_ADDR, f2fs drops the entry and adds the obsolete nid to the free nid list. However, this free nid will be reused sooner, resulting in its nat entry miss. In order to avoid this, we don't need to drop the nat cache entry at this moment. Reviewed-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
This patch removes data_version check flow during the fsync call. The original purpose for the use of data_version was to avoid writng inode pages redundantly by the fsync calls repeatedly. However, when user can modify file meta and then call fsync, we should not skip fsync procedure. So, let's remove this condition check and hope that user triggers in right manner. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
We should handle errors during the recovery flow correctly. For example, if we get -ENOMEM, we should report a mount failure instead of conducting the remained mount procedure. Reviewed-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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- 20 3月, 2013 10 次提交
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由 Masanari Iida 提交于
Correct spelling typo in comments Signed-off-by: NMasanari Iida <standby24x7@gmail.com> Acked-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Namjae Jeon 提交于
In function check_nid_range, there is no need to trigger BUG_ON and make kernel stop. Instead it could just check and indicate the inode number to be EINVAL. Update the return path in do_read_inode to use the return from check_nid_range. Signed-off-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NAmit Sahrawat <a.sahrawat@samsung.com> [Jaegeuk: replace BUG_ON with WARN_ON] Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Namjae Jeon 提交于
validate super block is not returning with proper values. When failure from sb_bread it should reflect there is an EIO otherwise it should return of EINVAL. Returning, '1' is not conveying proper message as the return type. 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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由 Namjae Jeon 提交于
make use of F2FS_NAME_LEN for name length checking, change return conditions at few places, by assigning storing the errorvalue in 'error' and making a common exit path. 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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由 Namjae Jeon 提交于
Change f2fs so that a warning is emitted when an attempt is made to mount a filesystem with the unsupported discard option. 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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由 Jaegeuk Kim 提交于
The fsync call should be ended after flushing the in-device caches. Reviewed-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
The build_free_nid should not add free nids over nm_i->max_nid. But, there was a hole that invalid free nid was added by the following scenario. Let's suppose nm_i->max_nid = 150 and the last NAT page has 100 ~ 200 nids. build_free_nids - get_current_nat_page loads the last NAT page - scan_nat_page can add 100 ~ 200 nids -> Bug here! So, when scanning an NAT page, we should check each candidate whether it is over max_nid or not. Reviewed-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
If the return value of releasepage is equal to zero, the page cannot be reclaimed. Instead, we should return 1 in order to reclaim clean pages. Reviewed-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
When we build new free nids, let's scan the just next NAT page instead of skipping a couple of previously scanned pages in order to reuse free nids in there. Otherwise, we can use too much wide range of nids even though several nids were deallocated, and also their node pages can be cached in the node_inode's address space. This means that we can retain lots of clean pages in the main memory, which induces mm's reclaiming overhead. Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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由 Jaegeuk Kim 提交于
Currently, f2fs doesn't reclaim any node pages. However, if we found that a node page was truncated by checking its block address with zero during f2fs_write_node_page, we should not skip that node page and return zero to reclaim it. Reviewed-by: NNamjae Jeon <namjae.jeon@samsung.com> Signed-off-by: NJaegeuk Kim <jaegeuk.kim@samsung.com>
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