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2012 May 16
0
[RESEND PATCH] Btrfs: set ioprio of scrub readahead to idle
.... This priority has shown the best performance during all measurements. Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de> --- fs/btrfs/ctree.h | 3 +++ fs/btrfs/reada.c | 5 +++++ 2 files changed, 8 insertions(+) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index ec42a24..e6f772d 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -173,6 +173,9 @@ static int btrfs_csum_sizes[] = { 4, 0 }; #define BTRFS_FT_XATTR 8 #define BTRFS_FT_MAX 9 +/* ioprio of readahead is set to idle */ +#define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) + /* * The key...