• Chao Yu's avatar
    f2fs: support lower priority asynchronous readahead in ra_meta_pages · 26879fb1
    Chao Yu authored
    Now, we use ra_meta_pages to reads continuous physical blocks as much as
    possible to improve performance of following reads. However, ra_meta_pages
    uses a synchronous readahead approach by submitting bio with READ, as READ
    is with high priority, it can not be used in the case of preloading blocks,
    and it's not sure when these RAed pages will be used.
    
    This patch supports asynchronous readahead in ra_meta_pages by tagging bio
    with READA flag in order to allow preloading.
    Signed-off-by: default avatarChao Yu <chao2.yu@samsung.com>
    Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
    26879fb1
recovery.c 14.3 KB