[PATCH 1/3 RESEND Rebased] btrfs: add inode pointer to prop_handler::validate()

[Anand Jain]

In preparation to add the readmirror property, pass inode in the
prop_handler::validate() function vector, so that it can fetch
corresponding fs_devices.

Signed-off-by: Anand Jain <anand.j...@oracle.com>
---
 fs/btrfs/props.c | 12 +++++++-----
 fs/btrfs/props.h |  4 ++--
 fs/btrfs/xattr.c |  2 +-
 3 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/fs/btrfs/props.c b/fs/btrfs/props.c
index e0469816c678..f9143f7c006d 100644
--- a/fs/btrfs/props.c
+++ b/fs/btrfs/props.c
@@ -17,7 +17,7 @@ static DEFINE_HASHTABLE(prop_handlers_ht, 
BTRFS_PROP_HANDLERS_HT_BITS);
 struct prop_handler {
        struct hlist_node node;
        const char *xattr_name;
-       int (*validate)(const char *value, size_t len);
+       int (*validate)(struct inode *inode, const char *value, size_t len);
        int (*apply)(struct inode *inode, const char *value, size_t len);
        const char *(*extract)(struct inode *inode);
        int inheritable;
@@ -55,7 +55,8 @@ find_prop_handler(const char *name,
        return NULL;
 }
 
-int btrfs_validate_prop(const char *name, const char *value, size_t value_len)
+int btrfs_validate_prop(struct inode *inode, const char *name,
+                       const char *value, size_t value_len)
 {
        const struct prop_handler *handler;
 
@@ -69,7 +70,7 @@ int btrfs_validate_prop(const char *name, const char *value, 
size_t value_len)
        if (value_len == 0)
                return 0;
 
-       return handler->validate(value, value_len);
+       return handler->validate(inode, value, value_len);
 }
 
 int btrfs_set_prop(struct btrfs_trans_handle *trans, struct inode *inode,
@@ -252,7 +253,8 @@ int btrfs_load_inode_props(struct inode *inode, struct 
btrfs_path *path)
        return ret;
 }
 
-static int prop_compression_validate(const char *value, size_t len)
+static int prop_compression_validate(struct inode *inode, const char *value,
+                                    size_t len)
 {
        if (!value)
                return 0;
@@ -350,7 +352,7 @@ static int inherit_props(struct btrfs_trans_handle *trans,
                 * This is not strictly necessary as the property should be
                 * valid, but in case it isn't, don't propagate it futher.
                 */
-               ret = h->validate(value, strlen(value));
+               ret = h->validate(inode, value, strlen(value));
                if (ret)
                        continue;
 
diff --git a/fs/btrfs/props.h b/fs/btrfs/props.h
index 40b2c65b518c..5b1e39136f7f 100644
--- a/fs/btrfs/props.h
+++ b/fs/btrfs/props.h
@@ -13,8 +13,8 @@ void __init btrfs_props_init(void);
 int btrfs_set_prop(struct btrfs_trans_handle *trans, struct inode *inode,
                   const char *name, const char *value, size_t value_len,
                   int flags);
-int btrfs_validate_prop(const char *name, const char *value, size_t value_len);
-
+int btrfs_validate_prop(struct inode *inode, const char *name,
+                       const char *value, size_t value_len);
 int btrfs_load_inode_props(struct inode *inode, struct btrfs_path *path);
 
 int btrfs_inode_inherit_props(struct btrfs_trans_handle *trans,
diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index 95d9aebff2c4..9bfe179717d3 100644
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -378,7 +378,7 @@ static int btrfs_xattr_handler_set_prop(const struct 
xattr_handler *handler,
        struct btrfs_root *root = BTRFS_I(inode)->root;
 
        name = xattr_full_name(handler, name);
-       ret = btrfs_validate_prop(name, value, size);
+       ret = btrfs_validate_prop(inode, name, value, size);
        if (ret)
                return ret;
 
-- 
2.20.1 (Apple Git-117)