linux-stable.git/fs/f2fs/debug.c, branch linux-4.2.y

f2fs: fix building on 32-bit architectures

2015-06-01T23:20:53+00:00

A bug fix to the debug output extended the type of some local
variables to 64-bit, which now causes the kernel to fail building
because of missing 64-bit division functions:

ERROR: "__aeabi_uldivmod" [fs/f2fs/f2fs.ko] undefined!

In the kernel, we have to use div_u64 or do_div to do this,
in order to annotate that this is an expensive operation.

As the function is only called for debug out, we know this
is not performance critical, so it is safe to use div_u64.

Signed-off-by: Arnd Bergmann 
Fixes: d1f85bd38db19 ("f2fs: avoid value overflow in showing current status")
Signed-off-by: Jaegeuk Kim

f2fs: avoid value overflow in showing current status

2015-05-28T22:41:44+00:00

This patch fixes overflow when do cat /sys/kernel/debug/f2fs/status.
If a section is relatively large, dist value can be overflowed.

Reported-by: Yossi Goldfill 
Signed-off-by: Jaegeuk Kim

f2fs: introduce discard_map for f2fs_trim_fs

2015-05-28T22:41:39+00:00

This patch adds a bitmap for discard issues from f2fs_trim_fs.
There-in rule is to issue discard commands only for invalidated blocks
after mount.
Once mount is done, f2fs_trim_fs trims out whole invalid area.
After ehn, it will not issue and discrads redundantly.

Signed-off-by: Jaegeuk Kim

f2fs: add stat info for moved blocks by background gc

2015-04-10T22:08:32+00:00

This patch is for looking into gc performance of f2fs in detail.

Signed-off-by: Changman Lee 
[Jaegeuk Kim: fix build errors]
Signed-off-by: Jaegeuk Kim

f2fs: show extent tree, node stat info in debugfs

2015-03-03T17:58:47+00:00

This patch add and show stat info of total memory footprint for extent tree,node
in debugfs.

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

f2fs: avoid variable length array

2015-02-12T01:04:50+00:00

Instead of using variable length array, this patch let preallocate memory for
them.

Signed-off-by: Jaegeuk Kim

f2fs: show the number of writeback pages in stat

2015-02-12T01:04:43+00:00

This patch adds the # of writeback pages in stat info.

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

f2fs: update memory footprint information

2015-02-12T01:04:31+00:00

This patch adds missing memory usages, and splits them in detail.

Signed-off-by: Jaegeuk Kim

f2fs: fix wrong memory footprint statistics in debugfs

2015-02-12T01:04:31+00:00

Our value of memory footprint statistics showed in debugfs is not calculated
correctly. Fix it in this patch.

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

f2fs: add nat/sit entries into status

2015-01-10T01:02:28+00:00

This patch adds NAT/SIT entry informations.

Signed-off-by: Jaegeuk Kim