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linux-stable/fs/f2fs
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Chao Yu 2db2388fcf f2fs: readahead for free nids building 
When there is no free nid in nid cache, all new node allocaters stop their
job to wait for reloading of free nids, however reloading is synchronous as
we will read 4 NAT pages for building nid cache, it cause the long latency.

This patch tries to readahead more NAT pages with READA request flag after
reloading of free nids. It helps to improve performance when users allocate
node id intensively.

Env: Sandisk 32G sd card
time for i in `seq 1 60000`; { echo -n > /mnt/f2fs/$i; echo XXXXXX > /mnt/f2fs/$i;}

Before:
real    0m2.814s
user    0m1.220s
sys     0m1.536s

After:
real    0m2.711s
user    0m1.136s
sys     0m1.568s

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-10-12 14:03:22 -07:00
..
acl.c f2fs: make posix_acl_create() safer and cleaner 2015-05-07 11:38:31 -07:00
acl.h f2fs: avoid deadlock on init_inode_metadata 2014-11-03 16:07:33 -08:00
checkpoint.c f2fs: support lower priority asynchronous readahead in ra_meta_pages 2015-10-12 14:03:15 -07:00
crypto.c f2fs crypto: add alloc_bounce_page 2015-06-11 15:04:20 -07:00
crypto_fname.c f2fs crypto: clean up error handling in f2fs_fname_setup_filename 2015-06-01 16:21:08 -07:00
crypto_key.c f2fs crypto: delete an unnecessary check before the function call "key_put" 2015-08-04 14:09:52 -07:00
crypto_policy.c f2fs crypto: do not set encryption policy for non-directory by ioctl 2015-06-01 16:21:07 -07:00
data.c f2fs: add a tracepoint for f2fs_read_data_pages 2015-10-12 14:00:34 -07:00
debug.c f2fs: use atomic64_t for extent cache hit stat 2015-10-09 16:20:55 -07:00
dir.c f2fs: set GFP_NOFS for grab_cache_page 2015-10-12 13:38:03 -07:00
extent_cache.c f2fs: introduce __try_update_largest_extent 2015-10-09 16:20:53 -07:00
f2fs.h f2fs: support lower priority asynchronous readahead in ra_meta_pages 2015-10-12 14:03:15 -07:00
f2fs_crypto.h f2fs crypto: remove alloc_page for bounce_page 2015-06-01 16:21:10 -07:00
file.c f2fs: set GFP_NOFS for grab_cache_page 2015-10-12 13:38:03 -07:00
gc.c f2fs: support lower priority asynchronous readahead in ra_meta_pages 2015-10-12 14:03:15 -07:00
gc.h f2fs: support synchronous gc in ioctl 2015-10-09 16:20:56 -07:00
hash.c f2fs: introduce dot and dotdot name check 2015-05-28 15:41:34 -07:00
inline.c f2fs: fix error handling for calls to various functions in the function recover_inline_data 2015-10-09 16:20:53 -07:00
inode.c f2fs: no need to lock for update_inode_page all the time 2015-10-09 16:20:50 -07:00
Kconfig f2fs: fix typo 2015-08-21 22:43:32 -07:00
Makefile f2fs: maintain extent cache in separated file 2015-08-04 14:09:58 -07:00
namei.c f2fs crypto: allocate buffer for decrypting filename 2015-10-09 16:20:51 -07:00
node.c f2fs: readahead for free nids building 2015-10-12 14:03:22 -07:00
node.h Revert "f2fs: do not skip dentry block writes" 2015-10-12 13:38:02 -07:00
recovery.c f2fs: support lower priority asynchronous readahead in ra_meta_pages 2015-10-12 14:03:15 -07:00
segment.c f2fs: support lower priority asynchronous readahead in ra_meta_pages 2015-10-12 14:03:15 -07:00
segment.h Revert "f2fs: do not skip dentry block writes" 2015-10-12 13:38:02 -07:00
shrinker.c f2fs: shrink free_nids entries 2015-08-20 09:00:06 -07:00
super.c f2fs: introduce a periodic checkpoint flow 2015-10-09 16:20:57 -07:00
trace.c f2fs: add sbi and page pointer in f2fs_io_info 2015-05-28 15:41:32 -07:00
trace.h f2fs: add sbi and page pointer in f2fs_io_info 2015-05-28 15:41:32 -07:00
xattr.c f2fs: correct return value of ->setxattr 2015-08-04 14:09:59 -07:00
xattr.h f2fs crypto: add encryption xattr support 2015-05-28 15:41:47 -07:00