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smb3: improve parallel reads of large files

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rasize (ra_pages) should be set higher than read size by default
to allow parallel reads when reading large files in order to
improve performance (otherwise there is much dead time on the
network when doing readahead of large files).  Default rasize
to twice readsize.

Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Steve French 2023-05-08 00:45:45 -05:00
parent cbd4cbabef
commit ba8c2b75b0
1 changed files with 1 additions and 1 deletions
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2
fs/cifs/cifsfs.c
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@ -246,7 +246,7 @@ cifs_read_super(struct super_block *sb)
if (cifs_sb->ctx->rasize)
sb->s_bdi->ra_pages = cifs_sb->ctx->rasize / PAGE_SIZE;
else
sb->s_bdi->ra_pages = cifs_sb->ctx->rsize / PAGE_SIZE;
sb->s_bdi->ra_pages = 2 * (cifs_sb->ctx->rsize / PAGE_SIZE);
sb->s_blocksize = CIFS_MAX_MSGSIZE;
sb->s_blocksize_bits = 14; /* default 2**14 = CIFS_MAX_MSGSIZE */