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| author | Pavel Shilovsky <piastryyy@gmail.com> | 2011-01-24 14:16:35 -0500 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2011-01-25 19:31:38 +0000 |
| commit | d39454ffe4a3c85428483b8a8a8e5e797b6363d5 (patch) | |
| tree | 60d9762510ed6e1da338d5777827e18917e799bf /fs/cifs/connect.c | |
| parent | 72432ffcf555decbbae47f1be338e1d2f210aa69 (diff) | |
| download | blackbird-op-linux-d39454ffe4a3c85428483b8a8a8e5e797b6363d5.tar.gz blackbird-op-linux-d39454ffe4a3c85428483b8a8a8e5e797b6363d5.zip | |
CIFS: Add strictcache mount option
Use for switching on strict cache mode. In this mode the
client reads from the cache all the time it has Oplock Level II,
otherwise - read from the server. As for write - the client stores
a data in the cache in Exclusive Oplock case, otherwise - write
directly to the server.
Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com>
Reviewed-by: Jeff Layton <jlayton@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 | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 0cc3b81c2e84..47034af67b09 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -87,6 +87,7 @@ struct smb_vol { bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ bool server_ino:1; /* use inode numbers from server ie UniqueId */ bool direct_io:1; + bool strict_io:1; /* strict cache behavior */ bool remap:1; /* set to remap seven reserved chars in filenames */ bool posix_paths:1; /* unset to not ask for posix pathnames. */ bool no_linux_ext:1; @@ -1344,6 +1345,8 @@ cifs_parse_mount_options(char *options, const char *devname, vol->direct_io = 1; } else if (strnicmp(data, "forcedirectio", 13) == 0) { vol->direct_io = 1; + } else if (strnicmp(data, "strictcache", 11) == 0) { + vol->strict_io = 1; } else if (strnicmp(data, "noac", 4) == 0) { printk(KERN_WARNING "CIFS: Mount option noac not " "supported. Instead set " @@ -2584,6 +2587,8 @@ static void setup_cifs_sb(struct smb_vol *pvolume_info, if (pvolume_info->multiuser) cifs_sb->mnt_cifs_flags |= (CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_NO_PERM); + if (pvolume_info->strict_io) + cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_STRICT_IO; if (pvolume_info->direct_io) { cFYI(1, "mounting share using direct i/o"); cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
