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| author | Chao Yu <chao@kernel.org> | 2023-11-22 22:47:15 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2023-11-28 10:59:51 -0800 |
| commit | d346fa09abff46988de9267b67b6900d9913d5a2 (patch) | |
| tree | da97310077218760313c3b334137fac0ef46d87d /fs/f2fs/f2fs.h | |
| parent | 8e9cf55ef89c775fdaaa7c6212dbb691420a4673 (diff) | |
| download | linux-d346fa09abff46988de9267b67b6900d9913d5a2.tar.gz linux-d346fa09abff46988de9267b67b6900d9913d5a2.tar.bz2 linux-d346fa09abff46988de9267b67b6900d9913d5a2.zip | |
f2fs: sysfs: support discard_io_aware
It gives a way to enable/disable IO aware feature for background
discard, so that we can tune background discard more precisely
based on undiscard condition. e.g. force to disable IO aware if
there are large number of discard extents, and discard IO may
always be interrupted by frequent common IO.
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 9043cedfa12b..86a145be4e53 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -374,6 +374,12 @@ enum { MAX_DPOLICY, }; +enum { + DPOLICY_IO_AWARE_DISABLE, /* force to not be aware of IO */ + DPOLICY_IO_AWARE_ENABLE, /* force to be aware of IO */ + DPOLICY_IO_AWARE_MAX, +}; + struct discard_policy { int type; /* type of discard */ unsigned int min_interval; /* used for candidates exist */ @@ -406,6 +412,7 @@ struct discard_cmd_control { unsigned int discard_urgent_util; /* utilization which issue discard proactively */ unsigned int discard_granularity; /* discard granularity */ unsigned int max_ordered_discard; /* maximum discard granularity issued by lba order */ + unsigned int discard_io_aware; /* io_aware policy */ unsigned int undiscard_blks; /* # of undiscard blocks */ unsigned int next_pos; /* next discard position */ atomic_t issued_discard; /* # of issued discard */ |