Daeho Jeong 6691d940b0 f2fs: introduce fragment allocation mode mount option ...

Added two options into "mode=" mount option to make it possible for
developers to simulate filesystem fragmentation/after-GC situation
itself. The developers use these modes to understand filesystem
fragmentation/after-GC condition well, and eventually get some
insights to handle them better.

"fragment:segment": f2fs allocates a new segment in ramdom position.
		With this, we can simulate the after-GC condition.
"fragment:block" : We can scatter block allocation with
		"max_fragment_chunk" and "max_fragment_hole" sysfs
		nodes. f2fs will allocate 1..<max_fragment_chunk>
		blocks in a chunk and make a hole in the length of
		1..<max_fragment_hole> by turns	in a newly allocated
		free segment. Plus, this mode implicitly enables
		"fragment:segment" option for more randomness.

Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

2021-10-26 14:04:30 -07:00

..

acl.c

vfs: add rcu argument to ->get_acl() callback

2021-08-18 22:08:24 +02:00

acl.h

vfs: add rcu argument to ->get_acl() callback

2021-08-18 22:08:24 +02:00

checkpoint.c

f2fs: avoid attaching SB_ACTIVE flag during mount

2021-09-16 08:38:32 -07:00

compress.c

f2fs: include non-compressed blocks in compr_written_block

2021-10-26 14:04:30 -07:00

data.c

f2fs-for-5.15-rc1

2021-09-04 10:48:47 -07:00

debug.c

f2fs: convert S_IRUGO to 0444

2021-08-17 11:59:05 -07:00

dir.c

f2fs: support fault injection for f2fs_kmem_cache_alloc()

2021-08-17 11:59:05 -07:00

extent_cache.c

f2fs: support fault injection for f2fs_kmem_cache_alloc()

2021-08-17 11:59:05 -07:00

f2fs.h

f2fs: introduce fragment allocation mode mount option

2021-10-26 14:04:30 -07:00

file.c

f2fs-for-5.15-rc1

2021-09-04 10:48:47 -07:00

gc.c

f2fs: introduce fragment allocation mode mount option

2021-10-26 14:04:30 -07:00

gc.h

f2fs: introduce gc_merge mount option

2021-03-30 18:48:56 -07:00

hash.c

f2fs: Handle casefolding with Encryption

2020-12-02 22:00:21 -08:00

inline.c

f2fs: restructure f2fs page.private layout

2021-05-14 11:22:08 -07:00

inode.c

f2fs: should use GFP_NOFS for directory inodes

2021-09-16 08:38:10 -07:00

iostat.c

f2fs: introduce periodic iostat io latency traces

2021-08-23 10:25:51 -07:00

iostat.h

f2fs: introduce periodic iostat io latency traces

2021-08-23 10:25:51 -07:00

Kconfig

f2fs: separate out iostat feature

2021-08-23 10:25:51 -07:00

Makefile

f2fs: separate out iostat feature

2021-08-23 10:25:51 -07:00

namei.c

f2fs: should use GFP_NOFS for directory inodes

2021-09-16 08:38:10 -07:00

node.c

f2fs: set SBI_NEED_FSCK flag when inconsistent node block found

2021-09-20 16:29:00 -07:00

node.h

f2fs: introduce excess_dirty_threshold()

2021-09-20 16:12:51 -07:00

recovery.c

f2fs: avoid attaching SB_ACTIVE flag during mount

2021-09-16 08:38:32 -07:00

segment.c

f2fs: introduce fragment allocation mode mount option

2021-10-26 14:04:30 -07:00

segment.h

f2fs: introduce fragment allocation mode mount option

2021-10-26 14:04:30 -07:00

shrinker.c

f2fs: avoid race condition for shrinker count

2020-12-03 00:59:26 -08:00

super.c

f2fs: introduce fragment allocation mode mount option

2021-10-26 14:04:30 -07:00

sysfs.c

f2fs: introduce fragment allocation mode mount option

2021-10-26 14:04:30 -07:00

verity.c

f2fs-for-5.13-rc1

2021-05-04 18:03:38 -07:00

xattr.c

f2fs: support fault injection for f2fs_kmem_cache_alloc()

2021-08-17 11:59:05 -07:00

xattr.h

f2fs: code cleanup by removing ifdef macro surrounding

2020-05-26 18:56:10 -07:00