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-rw-r--r--fs/orangefs/devorangefs-req.c10
-rw-r--r--fs/orangefs/downcall.h6
-rw-r--r--fs/orangefs/file.c13
-rw-r--r--fs/orangefs/orangefs-cache.c2
-rw-r--r--fs/orangefs/orangefs-dev-proto.h4
-rw-r--r--fs/orangefs/orangefs-kernel.h4
-rw-r--r--fs/orangefs/orangefs-sysfs.c18
-rw-r--r--fs/orangefs/super.c27
-rw-r--r--fs/orangefs/upcall.h6
9 files changed, 85 insertions, 5 deletions
diff --git a/fs/orangefs/devorangefs-req.c b/fs/orangefs/devorangefs-req.c
index 641e27152d7e..516ffb4dc9a0 100644
--- a/fs/orangefs/devorangefs-req.c
+++ b/fs/orangefs/devorangefs-req.c
@@ -18,6 +18,8 @@
/* this file implements the /dev/pvfs2-req device node */
+uint32_t orangefs_userspace_version;
+
static int open_access_count;
static DEFINE_MUTEX(devreq_mutex);
@@ -390,6 +392,13 @@ static ssize_t orangefs_devreq_write_iter(struct kiocb *iocb,
return -EPROTO;
}
+ if (!orangefs_userspace_version) {
+ orangefs_userspace_version = head.version;
+ } else if (orangefs_userspace_version != head.version) {
+ gossip_err("Error: userspace version changes\n");
+ return -EPROTO;
+ }
+
/* remove the op from the in progress hash table */
op = orangefs_devreq_remove_op(head.tag);
if (!op) {
@@ -530,6 +539,7 @@ static int orangefs_devreq_release(struct inode *inode, struct file *file)
gossip_debug(GOSSIP_DEV_DEBUG,
"pvfs2-client-core: device close complete\n");
open_access_count = 0;
+ orangefs_userspace_version = 0;
mutex_unlock(&devreq_mutex);
return 0;
}
diff --git a/fs/orangefs/downcall.h b/fs/orangefs/downcall.h
index db6e8722a89e..3b8923f8bf21 100644
--- a/fs/orangefs/downcall.h
+++ b/fs/orangefs/downcall.h
@@ -101,6 +101,11 @@ struct orangefs_fs_key_response {
char fs_key[FS_KEY_BUF_SIZE];
};
+/* 2.9.6 */
+struct orangefs_features_response {
+ __u64 features;
+};
+
struct orangefs_downcall_s {
__s32 type;
__s32 status;
@@ -122,6 +127,7 @@ struct orangefs_downcall_s {
struct orangefs_param_response param;
struct orangefs_perf_count_response perf_count;
struct orangefs_fs_key_response fs_key;
+ struct orangefs_features_response features;
} resp;
};
diff --git a/fs/orangefs/file.c b/fs/orangefs/file.c
index 0578b99f5471..3386886596d6 100644
--- a/fs/orangefs/file.c
+++ b/fs/orangefs/file.c
@@ -624,11 +624,14 @@ static int orangefs_file_release(struct inode *inode, struct file *file)
if (file->f_path.dentry->d_inode &&
file->f_path.dentry->d_inode->i_mapping &&
mapping_nrpages(&file->f_path.dentry->d_inode->i_data)) {
- gossip_debug(GOSSIP_INODE_DEBUG,
- "calling flush_racache on %pU\n",
- get_khandle_from_ino(inode));
- flush_racache(inode);
- gossip_debug(GOSSIP_INODE_DEBUG, "flush_racache finished\n");
+ if (orangefs_features & ORANGEFS_FEATURE_READAHEAD) {
+ gossip_debug(GOSSIP_INODE_DEBUG,
+ "calling flush_racache on %pU\n",
+ get_khandle_from_ino(inode));
+ flush_racache(inode);
+ gossip_debug(GOSSIP_INODE_DEBUG,
+ "flush_racache finished\n");
+ }
truncate_inode_pages(file->f_path.dentry->d_inode->i_mapping,
0);
}
diff --git a/fs/orangefs/orangefs-cache.c b/fs/orangefs/orangefs-cache.c
index eb0b6e00b519..aa3830b741c7 100644
--- a/fs/orangefs/orangefs-cache.c
+++ b/fs/orangefs/orangefs-cache.c
@@ -97,6 +97,8 @@ char *get_opname_string(struct orangefs_kernel_op_s *new_op)
return "OP_FSYNC";
else if (type == ORANGEFS_VFS_OP_FSKEY)
return "OP_FSKEY";
+ else if (type == ORANGEFS_VFS_OP_FEATURES)
+ return "OP_FEATURES";
}
return "OP_UNKNOWN?";
}
diff --git a/fs/orangefs/orangefs-dev-proto.h b/fs/orangefs/orangefs-dev-proto.h
index 71902899b1da..a3d84ffee905 100644
--- a/fs/orangefs/orangefs-dev-proto.h
+++ b/fs/orangefs/orangefs-dev-proto.h
@@ -41,6 +41,10 @@
#define ORANGEFS_VFS_OP_FSYNC 0xFF00EE01
#define ORANGEFS_VFS_OP_FSKEY 0xFF00EE02
#define ORANGEFS_VFS_OP_READDIRPLUS 0xFF00EE03
+#define ORANGEFS_VFS_OP_FEATURES 0xFF00EE05 /* 2.9.6 */
+
+/* features is a 64-bit unsigned bitmask */
+#define ORANGEFS_FEATURE_READAHEAD 1
/*
* Misc constants. Please retain them as multiples of 8!
diff --git a/fs/orangefs/orangefs-kernel.h b/fs/orangefs/orangefs-kernel.h
index 5584dfadb81c..0a82048f3aaf 100644
--- a/fs/orangefs/orangefs-kernel.h
+++ b/fs/orangefs/orangefs-kernel.h
@@ -414,6 +414,8 @@ void purge_waiting_ops(void);
/*
* defined in super.c
*/
+extern uint64_t orangefs_features;
+
struct dentry *orangefs_mount(struct file_system_type *fst,
int flags,
const char *devname,
@@ -473,6 +475,8 @@ ssize_t orangefs_inode_read(struct inode *inode,
/*
* defined in devorangefs-req.c
*/
+extern uint32_t orangefs_userspace_version;
+
int orangefs_dev_init(void);
void orangefs_dev_cleanup(void);
int is_daemon_in_service(void);
diff --git a/fs/orangefs/orangefs-sysfs.c b/fs/orangefs/orangefs-sysfs.c
index e88370540cb4..a799546a67f7 100644
--- a/fs/orangefs/orangefs-sysfs.c
+++ b/fs/orangefs/orangefs-sysfs.c
@@ -325,6 +325,15 @@ static ssize_t sysfs_service_op_show(struct kobject *kobj,
new_op->upcall.req.param.type = ORANGEFS_PARAM_REQUEST_GET;
if (!strcmp(kobj->name, ORANGEFS_KOBJ_ID)) {
+ /* Drop unsupported requests first. */
+ if (!(orangefs_features & ORANGEFS_FEATURE_READAHEAD) &&
+ (!strcmp(attr->attr.name, "readahead_count") ||
+ !strcmp(attr->attr.name, "readahead_size") ||
+ !strcmp(attr->attr.name, "readahead_count_size"))) {
+ rc = -EINVAL;
+ goto out;
+ }
+
if (!strcmp(attr->attr.name, "perf_history_size"))
new_op->upcall.req.param.op =
ORANGEFS_PARAM_REQUEST_OP_PERF_HISTORY_SIZE;
@@ -529,6 +538,15 @@ static ssize_t sysfs_service_op_store(struct kobject *kobj,
new_op->upcall.req.param.type = ORANGEFS_PARAM_REQUEST_SET;
if (!strcmp(kobj->name, ORANGEFS_KOBJ_ID)) {
+ /* Drop unsupported requests first. */
+ if (!(orangefs_features & ORANGEFS_FEATURE_READAHEAD) &&
+ (!strcmp(attr->attr.name, "readahead_count") ||
+ !strcmp(attr->attr.name, "readahead_size") ||
+ !strcmp(attr->attr.name, "readahead_count_size"))) {
+ rc = -EINVAL;
+ goto out;
+ }
+
if (!strcmp(attr->attr.name, "perf_history_size")) {
if (val > 0) {
new_op->upcall.req.param.op =
diff --git a/fs/orangefs/super.c b/fs/orangefs/super.c
index 74b84c08a140..166f3a59d2e4 100644
--- a/fs/orangefs/super.c
+++ b/fs/orangefs/super.c
@@ -33,6 +33,7 @@ static const match_table_t tokens = {
{ Opt_err, NULL }
};
+uint64_t orangefs_features;
static int parse_mount_options(struct super_block *sb, char *options,
int silent)
@@ -249,6 +250,19 @@ int orangefs_remount(struct orangefs_sb_info_s *orangefs_sb)
}
op_release(new_op);
+
+ if (orangefs_userspace_version >= 20907) {
+ new_op = op_alloc(ORANGEFS_VFS_OP_FEATURES);
+ if (!new_op)
+ return -ENOMEM;
+ new_op->upcall.req.features.features = 0;
+ ret = service_operation(new_op, "orangefs_features", 0);
+ orangefs_features = new_op->downcall.resp.features.features;
+ op_release(new_op);
+ } else {
+ orangefs_features = 0;
+ }
+
return ret;
}
@@ -492,6 +506,19 @@ struct dentry *orangefs_mount(struct file_system_type *fst,
list_add_tail(&ORANGEFS_SB(sb)->list, &orangefs_superblocks);
spin_unlock(&orangefs_superblocks_lock);
op_release(new_op);
+
+ if (orangefs_userspace_version >= 20907) {
+ new_op = op_alloc(ORANGEFS_VFS_OP_FEATURES);
+ if (!new_op)
+ return ERR_PTR(-ENOMEM);
+ new_op->upcall.req.features.features = 0;
+ ret = service_operation(new_op, "orangefs_features", 0);
+ orangefs_features = new_op->downcall.resp.features.features;
+ op_release(new_op);
+ } else {
+ orangefs_features = 0;
+ }
+
return dget(sb->s_root);
free_op:
diff --git a/fs/orangefs/upcall.h b/fs/orangefs/upcall.h
index 7c29fdf08ec5..af0b0e36d559 100644
--- a/fs/orangefs/upcall.h
+++ b/fs/orangefs/upcall.h
@@ -210,6 +210,11 @@ struct orangefs_fs_key_request_s {
__s32 __pad1;
};
+/* 2.9.6 */
+struct orangefs_features_request_s {
+ __u64 features;
+};
+
struct orangefs_upcall_s {
__s32 type;
__u32 uid;
@@ -246,6 +251,7 @@ struct orangefs_upcall_s {
struct orangefs_param_request_s param;
struct orangefs_perf_count_request_s perf_count;
struct orangefs_fs_key_request_s fs_key;
+ struct orangefs_features_request_s features;
} req;
};