linux.git/fs/f2fs, branch v3.13

f2fs: issue more large discard command

2013-11-11T00:36:32+00:00

o Changes from v1
  Use find_next(_zero)_bit suggested by jg.kim

When f2fs issues discard command, if segment is contiguous,
let's issue more large segment to gather adjacent segments.

** blktrace **
179,1    0     5859    42.619023770   971  C   D 131072 + 2097152 [0]
179,1    0    33665   108.840475468   971  C   D 2228224 + 2494464 [0]
179,1    0    33671   109.131616427   971  C   D 14909440 + 344064 [0]
179,1    0    33677   109.137100677   971  C   D 15261696 + 4096 [0]

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

f2fs: fix memory leak after kobject init failed in fill_super

2013-11-08T05:10:29+00:00

If we failed to init&add kobject when fill_super, stats info and proc object of
f2fs will not be released.
We should free them before we finish fill_super.

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

f2fs: cleanup waiting routine for writeback pages in cp

2013-11-08T05:10:29+00:00

use genernal method supported by kernel

 o changes from v1
   If any waiter exists at end io, wake up it.

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

f2fs: avoid to use a NULL point in destroy_segment_manager

2013-11-06T07:37:44+00:00

A NULL point should avoid to be used in destroy_segment_manager after allocating
memory fail for f2fs_sm_info.

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

f2fs: remove unnecessary TestClearPageError when wait pages writeback

2013-11-04T03:24:01+00:00

In wait_on_node_pages_writeback we will test and clear error flag for all
pages in radix tree, but not necessary.
So we only do this for pages belong to the specified inode.

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

f2fs: avoid to wait all the node blocks during fsync

2013-10-31T07:01:03+00:00

Previously, f2fs_sync_file() waits for all the node blocks to be written.
But, we don't need to do that, but wait only the inode-related node blocks.

This patch adds wait_on_node_pages_writeback() in which waits inode-related
node blocks that are on writeback.

Signed-off-by: Jaegeuk Kim

f2fs: check all ones or zeros bitmap with bitops for better mount performance

2013-10-30T03:23:23+00:00

Previously, check_block_count check valid_map with bit data type in common
scenario that sit has all ones or zeros bitmap, it makes low mount performance.
So let's check the special bitmap with integer data type instead of the bit one.

v1-->v2:
 o use find_next_{zero_}bit_le for better performance and readable as Jaegeuk
   suggested.
 o use neat logogram in comment as Gu Zheng suggested.
 o search continuous ones or zeros for better performance when checking mixed
   bitmap.

Suggested-by: Jaegeuk Kim 
Signed-off-by: Shu Tan 
Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: change the method of calculating the number summary blocks

2013-10-30T03:17:58+00:00

npages_for_summary_flush uses (SUMMARY_SIZE + 1) as the size of a f2fs_summary
while its actual size is  SUMMARY_SIZE. So the result sometimes is bigger than
actual number by one, which causes checkpoint can't be written into disk
contiguously, and sometimes summary blocks can't be compacted like they should.
Besides, when writing summary blocks into pages, if remain space in a page
isn't big enough for one f2fs_summary, it will be left unused, current code
seems not to take it into account.

Signed-off-by: Fan Li 
Signed-off-by: Jaegeuk Kim

f2fs: fix calculating incorrect free size when update xattr in __f2fs_setxattr

2013-10-29T06:56:08+00:00

During xattr updating, free size should be corrected to remainder free size
+ old entry size.
It can avoid ENOSPC error when we update old entry with the same size new
entry at fully filled xattr.

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

f2fs: add an option to avoid unnecessary BUG_ONs

2013-10-29T06:44:38+00:00

If you want to remove unnecessary BUG_ONs, you can just turn off F2FS_CHECK_FS
in your kernel config.

Signed-off-by: Jaegeuk Kim