linux.git/fs/f2fs/debug.c, branch v4.19

f2fs: Allocate and stat mem used by free nid bitmap more accurately

2018-07-29T01:23:26+00:00

This patch used f2fs_bitmap_size macro to calculate mem used by
free nid bitmap, and stat used mem including aligned part.

Signed-off-by: Yunlei He 
Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: avoid stucking GC due to atomic write

2018-05-31T18:31:51+00:00

f2fs doesn't allow abuse on atomic write class interface, so except
limiting in-mem pages' total memory usage capacity, we need to limit
atomic-write usage as well when filesystem is seriously fragmented,
otherwise we may run into infinite loop during foreground GC because
target blocks in victim segment are belong to atomic opened file for
long time.

Now, we will detect failure due to atomic write in foreground GC, if
the count exceeds threshold, we will drop all atomic written data in
cache, by this, I expect it can keep our system running safely to
prevent Dos attack.

In addition, his patch adds to show GC skip information in debugfs,
now it just shows count of skipped caused by atomic write.

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

f2fs: inject fault to kzalloc

2018-01-03T03:27:29+00:00

This patch introduces f2fs_kzalloc based on f2fs_kmalloc in order to
support error injection for kzalloc().

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

f2fs: remove unneeded memory footprint accounting

2018-01-03T03:27:27+00:00

We forgot to remov memory footprint accounting of per-cpu type
variables, fix it.

Fixes: 35782b233f37 ("f2fs: remove percpu_count due to performance regression")
Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: reserve nid resource for quota sysfile

2018-01-03T03:27:26+00:00

During mkfs, quota sysfiles have already occupied nid resource,
it needs to adjust remaining available nid count in kernel side.

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

f2fs: expose quota information in debugfs

2017-11-14T02:29:01+00:00

This patch shows # of dirty pages and # of hidden quota files.

Signed-off-by: Jaegeuk Kim

f2fs: show current cp state

2017-11-06T00:41:49+00:00

This patch shows whether checkpoint met any error case.

Signed-off-by: Jaegeuk Kim

f2fs: fix to show ino management cache size correctly

2017-10-10T19:49:53+00:00

It needs to stat size of ino management cache with all type instead of
orphan ino type.

Fixes: 652be55162dc ("f2fs: show # of orphan inodes")
Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: obsolete ALLOC_NID_LIST list

2017-10-10T19:49:53+00:00

As Fan Li reported, there is no user traversing nid_list[ALLOC_NID_LIST]
which is used for tracking preallocated nids. Let's drop it, and only
track preallocated nids in free_nid_root radix-tree.

Reported-by: Fan Li 
Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: show flush list status in sysfs

2017-10-10T19:49:52+00:00

This patch adds to show flush list status in sysfs.

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