Messages in this thread Patch in this message | | | From | Dominique Martinet <> | Subject | [PATCH] 9p: set readahead and io size according to maxsize | Date | Thu, 4 Nov 2021 21:03:23 +0900 |
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having a readahead of 128k with a msize of 128k (with overhead) lead to reading 124+4k everytime, making two roundtrips needlessly.
tune readahead according to msize when cache is enabled for better performance
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org> --- fs/9p/vfs_super.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c index c6028af51925..b0632f4e337f 100644 --- a/fs/9p/vfs_super.c +++ b/fs/9p/vfs_super.c @@ -79,6 +79,9 @@ v9fs_fill_super(struct super_block *sb, struct v9fs_session_info *v9ses, if (!v9ses->cache) { sb->s_bdi->ra_pages = 0; sb->s_bdi->io_pages = 0; + } else { + sb->s_bdi->ra_pages = v9ses->maxdata >> PAGE_SHIFT; + sb->s_bdi->io_pages = v9ses->maxdata >> PAGE_SHIFT; } sb->s_flags |= SB_ACTIVE | SB_DIRSYNC; -- 2.31.1
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