X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/8ce769cc52e91ff3cdb8eda4b1f5d8fe58241688..a36758a5018f6a3792c164cd2a313d4f61b7111e:/lunaix-os/includes/lunaix/fs.h

diff --git a/lunaix-os/includes/lunaix/fs.h b/lunaix-os/includes/lunaix/fs.h
index f6a2e62..024b4ea 100644
--- a/lunaix-os/includes/lunaix/fs.h
+++ b/lunaix-os/includes/lunaix/fs.h
@@ -120,6 +120,16 @@ struct v_file_ops
 {
     int (*write)(struct v_inode* inode, void* buffer, size_t len, size_t fpos);
     int (*read)(struct v_inode* inode, void* buffer, size_t len, size_t fpos);
+
+    // for operatiosn {write|read}_page, following are true:
+    //  + `len` always equals to PG_SIZE
+    //  + `fpos` always PG_SIZE aligned.
+    // These additional operations allow underlying fs to use more specialized
+    // and optimized code.
+
+    int (*write_page)(struct v_inode* inode, void* pg, size_t len, size_t fpos);
+    int (*read_page)(struct v_inode* inode, void* pg, size_t len, size_t fpos);
+
     int (*readdir)(struct v_file* file, struct dir_context* dctx);
     int (*seek)(struct v_inode* inode, size_t offset); // optional
     int (*close)(struct v_file* file);