[f2fs-dev] [PATCH 3/3] f2fs: remove unused parameter

2017-11-22 Thread Sheng Yong
Commit d260081ccf37 ("f2fs: change recovery policy of xattr node block") removes the use of blkaddr, which is no longer used. So remove the parameter. Signed-off-by: Sheng Yong --- fs/f2fs/f2fs.h | 3 +-- fs/f2fs/node.c | 2 +- fs/f2fs/recovery.c | 6 +++--- 3 files changed, 5 insertions

[f2fs-dev] [PATCH 2/3] f2fs: still write data if preallocate only partial blocks

2017-11-22 Thread Sheng Yong
If there is not enough space left, f2fs_preallocate_blocks may only preallocte partial blocks. As a result, the write operation fails but i_blocks is not 0. To avoid this, f2fs should write data in non-preallocation way and write as many data as the size of i_blocks. Signed-off-by: Sheng Yong --

[f2fs-dev] [RFC PATCH 1/3] f2fs: introduce sysfs readdir_ra to readahead inode block in readdir

2017-11-22 Thread Sheng Yong
This patch introduces a sysfs interface readdir_ra to enable/disable readaheading inode block in f2fs_readdir. When readdir_ra is enabled, it improves the performance of "readdir + stat". For 300,000 files: time find /data/test > /dev/null disable readdir_ra: 1m25.69s real 0m01.94s user

[f2fs-dev] [PATCH] f2fs: obsolete free nid list approach

2017-11-22 Thread Chao Yu
Previously, we use free nid list to manage free nid entry, so during nid allocation, we can just pick up one entry from list header, which has quite low overhead. But sadly, during initialization of free nid list, we should do lookup combining with lots of different inner caches, including NAT pag

[f2fs-dev] [PATCH RESEND v3] f2fs: fix concurrent problem for updating free bitmap

2017-11-22 Thread LiFan
alloc_nid_failed and scan_nat_page can be called at the same time, and we haven't protected add_free_nid and update_free_nid_bitmap with the same nid_list_lock. That could lead to Thread AThread B - __build_free_nids - scan_nat_page