diff options
| author |   Jeff Layton <jlayton@redhat.com> | 2012-05-16 07:53:01 -0400 |
|---|---|---|
| committer |   Steve French <sfrench@us.ibm.com> | 2012-05-16 20:13:33 -0500 |
| commit | 296838b182ebad919074bf324e1667d28a04b936 (patch) | |
| tree | ccc240eac12af4ba244c15cb8fa105e073b9aa1f /fs/cifs | |
| parent | cifs: display cache= option in /proc/mounts (diff) | |
| download | linux-dev-296838b182ebad919074bf324e1667d28a04b936.tar.xz linux-dev-296838b182ebad919074bf324e1667d28a04b936.zip | |
cifs: add warning about change in default cache semantics in 3.7
Add a warning that will be displayed when there is no cache= option
specified. We want to ensure that users are aware of the change in
defaults coming in 3.7.
Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/connect.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 34186805e639..c49d49438c52 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1244,6 +1244,8 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, char *string = NULL; char *tmp_end, *value; char delim; + bool cache_specified = false; + static bool cache_warned = false; separator[0] = ','; separator[1] = 0; @@ -1455,6 +1457,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, vol->seal = 1; break; case Opt_direct: + cache_specified = true; vol->direct_io = true; vol->strict_io = false; cERROR(1, "The \"directio\" option will be removed in " @@ -1462,6 +1465,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, "option."); break; case Opt_strictcache: + cache_specified = true; vol->direct_io = false; vol->strict_io = true; cERROR(1, "The \"strictcache\" option will be removed " @@ -1888,6 +1892,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, goto cifs_parse_mount_err; break; case Opt_cache: + cache_specified = true; string = match_strdup(args); if (string == NULL) goto out_nomem; @@ -1938,6 +1943,14 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, printk(KERN_NOTICE "CIFS: ignoring forcegid mount option " "specified with no gid= option.\n"); + /* FIXME: remove this block in 3.7 */ + if (!cache_specified && !cache_warned) { + cache_warned = true; + printk(KERN_NOTICE "CIFS: no cache= option specified, using " + "\"cache=loose\". This default will change " + "to \"cache=strict\" in 3.7.\n"); + } + kfree(mountdata_copy); return 0; |