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ceph: validate correctness of some mount options 

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Yan, Zheng 2017-07-11 18:49:44 +08:00 committed by Ilya Dryomov
parent 95cca2b44e
commit 4214fb158c
3 changed files with 23 additions and 17 deletions
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21
fs/ceph/super.c
View File

@ -243,21 +243,33 @@ static int parse_fsopt_token(char *c, void *private)
fsopt->rsize = ALIGN(intval, PAGE_SIZE);
break;
case Opt_rasize:
fsopt->rasize = intval;
if (intval < 0)
return -EINVAL;
fsopt->rasize = ALIGN(intval + PAGE_SIZE - 1, PAGE_SIZE);
break;
case Opt_caps_wanted_delay_min:
if (intval < 1)
return -EINVAL;
fsopt->caps_wanted_delay_min = intval;
break;
case Opt_caps_wanted_delay_max:
if (intval < 1)
return -EINVAL;
fsopt->caps_wanted_delay_max = intval;
break;
case Opt_readdir_max_entries:
if (intval < 1)
return -EINVAL;
fsopt->max_readdir = intval;
break;
case Opt_readdir_max_bytes:
if (intval < PAGE_SIZE && intval != 0)
return -EINVAL;
fsopt->max_readdir_bytes = intval;
break;
case Opt_congestion_kb:
if (intval < 1024) /* at least 1M */
return -EINVAL;
fsopt->congestion_kb = intval;
break;
case Opt_dirstat:
@ -946,12 +958,7 @@ static int ceph_setup_bdi(struct super_block *sb, struct ceph_fs_client *fsc)
return err;
/* set ra_pages based on rasize mount option? */
if (fsc->mount_options->rasize >= PAGE_SIZE)
sb->s_bdi->ra_pages =
(fsc->mount_options->rasize + PAGE_SIZE - 1)
>> PAGE_SHIFT;
else
sb->s_bdi->ra_pages = VM_MAX_READAHEAD * 1024 / PAGE_SIZE;
sb->s_bdi->ra_pages = fsc->mount_options->rasize >> PAGE_SHIFT;
/* set io_pages based on max osd read size */
sb->s_bdi->io_pages = fsc->mount_options->rsize >> PAGE_SHIFT;

9
fs/ceph/super.h
View File

@ -56,6 +56,15 @@
#define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024)
#define CEPH_SNAPDIRNAME_DEFAULT ".snap"
/*
* Delay telling the MDS we no longer want caps, in case we reopen
* the file. Delay a minimum amount of time, even if we send a cap
* message for some other reason. Otherwise, take the oppotunity to
* update the mds to avoid sending another message later.
*/
#define CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT 5 /* cap release delay */
#define CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT 60 /* cap release delay */
struct ceph_mount_options {
int flags;
int sb_flags;

10
include/linux/ceph/libceph.h
View File

@ -84,16 +84,6 @@ struct ceph_options {
#define CEPH_AUTH_NAME_DEFAULT "guest"
/*
* Delay telling the MDS we no longer want caps, in case we reopen
* the file. Delay a minimum amount of time, even if we send a cap
* message for some other reason. Otherwise, take the oppotunity to
* update the mds to avoid sending another message later.
*/
#define CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT 5 /* cap release delay */
#define CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT 60 /* cap release delay */
/* mount state */
enum {
CEPH_MOUNT_MOUNTING,