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Diffstat (limited to 'mm/shmem.c')
-rw-r--r--mm/shmem.c24
1 files changed, 16 insertions, 8 deletions
diff --git a/mm/shmem.c b/mm/shmem.c
index d8ef7ba831a..1ccf794fbe6 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1080,9 +1080,10 @@ redirty:
#ifdef CONFIG_NUMA
#ifdef CONFIG_TMPFS
static int shmem_parse_mpol(char *value, unsigned short *policy,
- nodemask_t *policy_nodes)
+ unsigned short *mode_flags, nodemask_t *policy_nodes)
{
char *nodelist = strchr(value, ':');
+ char *flags = strchr(value, '=');
int err = 1;
if (nodelist) {
@@ -1093,6 +1094,8 @@ static int shmem_parse_mpol(char *value, unsigned short *policy,
if (!nodes_subset(*policy_nodes, node_states[N_HIGH_MEMORY]))
goto out;
}
+ if (flags)
+ *flags++ = '\0';
if (!strcmp(value, "default")) {
*policy = MPOL_DEFAULT;
/* Don't allow a nodelist */
@@ -1122,6 +1125,8 @@ static int shmem_parse_mpol(char *value, unsigned short *policy,
*policy_nodes = node_states[N_HIGH_MEMORY];
err = 0;
}
+ if (flags) {
+ }
out:
/* Restore string for error message */
if (nodelist)
@@ -1130,7 +1135,7 @@ out:
}
static void shmem_show_mpol(struct seq_file *seq, unsigned short policy,
- const nodemask_t policy_nodes)
+ unsigned short flags, const nodemask_t policy_nodes)
{
char *policy_string;
@@ -1199,13 +1204,13 @@ static struct page *shmem_alloc_page(gfp_t gfp,
#else /* !CONFIG_NUMA */
#ifdef CONFIG_TMPFS
static inline int shmem_parse_mpol(char *value, unsigned short *policy,
- nodemask_t *policy_nodes)
+ unsigned short *mode_flags, nodemask_t *policy_nodes)
{
return 1;
}
static inline void shmem_show_mpol(struct seq_file *seq, unsigned short policy,
- const nodemask_t policy_nodes)
+ unsigned short flags, const nodemask_t policy_nodes)
{
}
#endif /* CONFIG_TMPFS */
@@ -1578,7 +1583,7 @@ shmem_get_inode(struct super_block *sb, int mode, dev_t dev)
inode->i_op = &shmem_inode_operations;
inode->i_fop = &shmem_file_operations;
mpol_shared_policy_init(&info->policy, sbinfo->policy,
- &sbinfo->policy_nodes);
+ sbinfo->flags, &sbinfo->policy_nodes);
break;
case S_IFDIR:
inc_nlink(inode);
@@ -1592,7 +1597,7 @@ shmem_get_inode(struct super_block *sb, int mode, dev_t dev)
* Must not load anything in the rbtree,
* mpol_free_shared_policy will not be called.
*/
- mpol_shared_policy_init(&info->policy, MPOL_DEFAULT,
+ mpol_shared_policy_init(&info->policy, MPOL_DEFAULT, 0,
NULL);
break;
}
@@ -2209,7 +2214,7 @@ static int shmem_parse_options(char *options, struct shmem_sb_info *sbinfo,
goto bad_val;
} else if (!strcmp(this_char,"mpol")) {
if (shmem_parse_mpol(value, &sbinfo->policy,
- &sbinfo->policy_nodes))
+ &sbinfo->flags, &sbinfo->policy_nodes))
goto bad_val;
} else {
printk(KERN_ERR "tmpfs: Bad mount option %s\n",
@@ -2261,6 +2266,7 @@ static int shmem_remount_fs(struct super_block *sb, int *flags, char *data)
sbinfo->max_inodes = config.max_inodes;
sbinfo->free_inodes = config.max_inodes - inodes;
sbinfo->policy = config.policy;
+ sbinfo->flags = config.flags;
sbinfo->policy_nodes = config.policy_nodes;
out:
spin_unlock(&sbinfo->stat_lock);
@@ -2282,7 +2288,8 @@ static int shmem_show_options(struct seq_file *seq, struct vfsmount *vfs)
seq_printf(seq, ",uid=%u", sbinfo->uid);
if (sbinfo->gid != 0)
seq_printf(seq, ",gid=%u", sbinfo->gid);
- shmem_show_mpol(seq, sbinfo->policy, sbinfo->policy_nodes);
+ shmem_show_mpol(seq, sbinfo->policy, sbinfo->flags,
+ sbinfo->policy_nodes);
return 0;
}
#endif /* CONFIG_TMPFS */
@@ -2313,6 +2320,7 @@ static int shmem_fill_super(struct super_block *sb,
sbinfo->uid = current->fsuid;
sbinfo->gid = current->fsgid;
sbinfo->policy = MPOL_DEFAULT;
+ sbinfo->flags = 0;
sbinfo->policy_nodes = node_states[N_HIGH_MEMORY];
sb->s_fs_info = sbinfo;