linux-stable.git/fs/f2fs, branch v3.19

f2fs: avoid to ra unneeded blocks in recover flow

2014-12-08T22:19:09+00:00

To improve recovery speed, f2fs try to readahead many contiguous blocks in warm
node segment, but for most time, abnormal power-off do not occur frequently, so
when mount a normal power-off f2fs image, by contrary ra so many blocks and then
invalid them will hurt the performance of mount.
It's better to just ra the first next-block for normal condition.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: introduce is_valid_blkaddr to cleanup codes in ra_meta_pages

2014-12-08T22:19:08+00:00

This patch does cleanup work, it introduces is_valid_blkaddr() to include
verification code for blkaddr with upper and down boundary value which were in
ra_meta_pages previous.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: fix to enable readahead for SSA/CP blocks

2014-12-08T22:19:07+00:00

1.We use zero as upper boundary value for ra SSA/CP blocks, we will skip
readahead as verification failure with max number, it causes low performance.
2.Low boundary value is not accurate for SSA/CP/POR region verification, so
these values need to be redefined.

This patch fixes above issues.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: use atomic for counting inode with inline_{dir,inode} flag

2014-12-08T18:54:59+00:00

As inline_{dir,inode} stat is increased/decreased concurrently by multi threads,
so the value is not so accurate, let's use atomic type for counting accurately.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: cleanup path to need cp at fsync

2014-12-08T18:40:22+00:00

Added some commentaries for code readability and cleaned up if-statement
clearly.

Signed-off-by: Changman Lee 
Signed-off-by: Jaegeuk Kim

f2fs: check if inode state is dirty at fsync

2014-12-08T18:37:13+00:00

If inode state is dirty, go straight to write.

Suggested-by: Jaegeuk Kim 
Signed-off-by: Changman Lee 
Signed-off-by: Jaegeuk Kim

f2fs: count the number of inmemory pages

2014-12-08T18:35:15+00:00

This patch adds counting # of inmemory pages in the page cache.

Signed-off-by: Jaegeuk Kim

f2fs: release inmemory pages when the file was closed

2014-12-08T18:35:15+00:00

If file is closed, let's drop inmemory pages.

Signed-off-by: Jaegeuk Kim

f2fs: set page private for inmemory pages for truncation

2014-12-08T18:35:14+00:00

The inmemory pages should be handled by invalidate_page since it needs to be
released int the truncation path.

Signed-off-by: Jaegeuk Kim

f2fs: count inline_xx in do_read_inode

2014-12-08T18:35:13+00:00

In do_read_inode, if we failed __recover_inline_status, the inode has inline
flag without increasing its count.
Later, f2fs_evict_inode will decrease the count, which causes -1.

Signed-off-by: Jaegeuk Kim