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| author | Suresh Jayaraman | 2010-07-05 14:43:36 +0200 |
|---|---|---|
| committer | Steve French | 2010-08-02 14:40:37 +0200 |
| commit | fa1df75d4debde6d843e616df656f50a92958737 (patch) | |
| tree | 51ed23f935dcd4536417613cf88c2dcfc369fd08 /fs/cifs/connect.c | |
| parent | cifs: read pages from FS-Cache (diff) | |
| download | kernel-qcow2-linux-fa1df75d4debde6d843e616df656f50a92958737.tar.gz kernel-qcow2-linux-fa1df75d4debde6d843e616df656f50a92958737.tar.xz kernel-qcow2-linux-fa1df75d4debde6d843e616df656f50a92958737.zip | |
cifs: add mount option to enable local caching
Add a mount option 'fsc' to enable local caching on CIFS.
I considered adding a separate debug bit for caching, but it appears that
debugging would be relatively easier with the normal CIFS_INFO level.
As the cifs-utils (userspace) changes are not done yet, this patch enables
'fsc' by default to enable testing.
Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/connect.c')
| -rw-r--r-- | fs/cifs/connect.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 6e1fe3a7f27d..399b60129b74 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -98,6 +98,7 @@ struct smb_vol { bool noblocksnd:1; bool noautotune:1; bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ + bool fsc:1; /* enable fscache */ unsigned int rsize; unsigned int wsize; bool sockopt_tcp_nodelay:1; @@ -843,6 +844,9 @@ cifs_parse_mount_options(char *options, const char *devname, /* default to using server inode numbers where available */ vol->server_ino = 1; + /* XXX: default to fsc for testing until mount.cifs pieces are done */ + vol->fsc = 1; + if (!options) return 1; @@ -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); @@ -2463,6 +2469,8 @@ 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; |