linux-stable.git/fs/f2fs/debug.c, branch v5.0

f2fs: correct wrong spelling, issing_*

2018-12-26T23:16:54+00:00

Let's use "queued" instead of "issuing".

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

f2fs: use kvmalloc, if kmalloc is failed

2018-12-26T23:16:53+00:00

One report says memalloc failure during mount.

 (unwind_backtrace) from [] (show_stack+0x10/0x14)
 (show_stack) from [] (dump_stack+0x8c/0xa0)
 (dump_stack) from [] (warn_alloc+0xc4/0x160)
 (warn_alloc) from [] (__alloc_pages_nodemask+0x3f4/0x10d0)
 (__alloc_pages_nodemask) from [] (kmalloc_order_trace+0x2c/0x120)
 (kmalloc_order_trace) from [] (build_node_manager+0x35c/0x688)
 (build_node_manager) from [] (f2fs_fill_super+0xf0c/0x16cc)
 (f2fs_fill_super) from [] (mount_bdev+0x15c/0x188)
 (mount_bdev) from [] (f2fs_mount+0x18/0x20)
 (f2fs_mount) from [] (mount_fs+0x158/0x19c)
 (mount_fs) from [] (vfs_kern_mount+0x78/0x134)
 (vfs_kern_mount) from [] (do_mount+0x474/0xca4)
 (do_mount) from [] (SyS_mount+0x94/0xbc)
 (SyS_mount) from [] (ret_fast_syscall+0x0/0x48)

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

f2fs: add to account direct IO

2018-11-26T23:53:56+00:00

This patch adds f2fs_dio_submit_bio() to hook submit_io/end_io functions
in direct IO path, in order to account DIO.

Later, we will add this count into is_idle() to let background GC/Discard
thread be aware of DIO.

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

f2fs: Change to use DEFINE_SHOW_ATTRIBUTE macro

2018-11-26T23:53:56+00:00

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

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

f2fs: introduce __is_large_section() for cleanup

2018-11-26T23:53:55+00:00

Introduce a wrapper __is_large_section() to clean up codes.

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

f2fs: account read IOs and use IO counts for is_idle

2018-10-23T00:54:46+00:00

This patch adds issued read IO counts which is under block layer.

Chao modified a bit, since:

Below race can cause reversed reference on F2FS_RD_DATA, there is
the same issue in f2fs_submit_page_bio(), fix them by relocate
__submit_bio() and inc_page_count.

Thread A			Thread B
- f2fs_write_begin
 - f2fs_submit_page_read
 - __submit_bio
				- f2fs_read_end_io
				 - __read_end_io
				 - dec_page_count(, F2FS_RD_DATA)
 - inc_page_count(, F2FS_RD_DATA)

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

f2fs: checkpoint disabling

2018-10-16T16:36:39+00:00

Note that, it requires "f2fs: return correct errno in f2fs_gc".

This adds a lightweight non-persistent snapshotting scheme to f2fs.

To use, mount with the option checkpoint=disable, and to return to
normal operation, remount with checkpoint=enable. If the filesystem
is shut down before remounting with checkpoint=enable, it will revert
back to its apparent state when it was first mounted with
checkpoint=disable. This is useful for situations where you wish to be
able to roll back the state of the disk in case of some critical
failure.

Signed-off-by: Daniel Rosenberg 
[Jaegeuk Kim: use SB_RDONLY instead of MS_RDONLY]
Signed-off-by: Jaegeuk Kim

f2fs: add to account skip count of background GC

2018-10-01T01:33:34+00:00

This patch adds to account skip count of background GC, and show stat
info via 'status' debugfs entry.

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

f2fs: add to account meta IO

2018-10-01T01:33:21+00:00

This patch supports to account meta IO, it enables to show write IO
from f2fs more comprehensively via 'status' debugfs entry.

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

f2fs: add SPDX license identifiers

2018-09-12T20:07:10+00:00

Remove the verbose license text from f2fs files and replace them with
SPDX tags.  This does not change the license of any of the code.

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