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From: Suresh Jayaraman <sjayaraman-l3A5Bk7waGM@public.gmane.org>
Subject: Re: [RFC][PATCH 10/10] cifs: add mount option to enable local caching
Date: Fri, 25 Jun 2010 16:18:12 +0530
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Message-ID: <4C24896C.4000903@suse.de>
References: <yes> <1277220309-3757-1-git-send-email-sjayaraman@suse.de> <4C225338.9010807@gmail.com>
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Cc: Steve French <smfrench-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
David Howells <dhowells-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Scott Lovenberg <scott.lovenberg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
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On 06/24/2010 12:02 AM, Scott Lovenberg wrote:
> On 6/22/2010 11:25 AM, Suresh Jayaraman wrote:
>> Add a mount option 'fsc' to enable local caching on CIFS.
>>
>> As the cifs-utils (userspace) changes are not done yet, this patch
>> enables
>> 'fsc' by default to assist testing.
>>
> [...]
>> @@ -1332,6 +1336,8 @@ cifs_parse_mount_options(char *options, const
>> char *devname,
>> printk(KERN_WARNING "CIFS: Mount option noac not "
>> "supported. Instead set "
>> "/proc/fs/cifs/LookupCacheEnabled to 0\n");
>> + } else if (strnicmp(data, "fsc", 3) == 0) {
>> + vol->fsc = true;
>> } else
>> printk(KERN_WARNING "CIFS: Unknown mount option %s\n",
>> data);
>> @@ -2405,6 +2411,8 @@ static void setup_cifs_sb(struct smb_vol
>> *pvolume_info,
>> cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID;
>> if (pvolume_info->dynperm)
>> cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM;
>> + if (pvolume_info->fsc)
>> + cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_FSCACHE;
>> if (pvolume_info->direct_io) {
>> cFYI(1, "mounting share using direct i/o");
>> cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO;
>>
> I reworked the CIFS mount option parsing a while back; I'm not sure
> whether that patch was going to be in the 2.6.35 tree or not (the window
> just opened, didn't it?).
Not a problem, I could redo this patch alone when the reworked option
parsing patches get in.
> Jeff, Steve, can you confirm if that patch is going to be in 2.6.35?
>
> Patch refs: http://patchwork.ozlabs.org/patch/53059/ and
> http://patchwork.ozlabs.org/patch/53674/
>
Thanks,
--
Suresh Jayaraman