feat: (vfs) write_page and read_page file operations

[lunaix-os.git] / lunaix-os / kernel / fs / pcache.c

diff --git a/lunaix-os/kernel/fs/pcache.c b/lunaix-os/kernel/fs/pcache.c
index c27f78ba6bf8282139c0f487eb761acb4e456f9d..317e491a336284268a6f827ae82d7aec1841e4ae 100644 (file)
--- a/lunaix-os/kernel/fs/pcache.c
+++ b/lunaix-os/kernel/fs/pcache.c
@@ -84,9 +84,10 @@ pcache_get_page(struct pcache* pcache,
 {
     struct pcache_pg* pg = btrie_get(&pcache->tree, index);
     int is_new = 0;
 {
     struct pcache_pg* pg = btrie_get(&pcache->tree, index);
     int is_new = 0;

-    *offset = index & ((1 << pcache->tree.truncated) - 1);
+    u32_t mask = ((1 << pcache->tree.truncated) - 1);
+    *offset = index & mask;

     if (!pg && (pg = pcache_new_page(pcache, index))) {
     if (!pg && (pg = pcache_new_page(pcache, index))) {

-        pg->fpos = index - *offset;
+        pg->fpos = index & ~mask;

         pcache->n_pages++;
         is_new = 1;
     }
         pcache->n_pages++;
         is_new = 1;
     }


@@ -137,7 +138,8 @@ pcache_read(struct v_inode* inode, void* data, uint32_t len, uint32_t fpos)
             }
 
             // Filling up the page
             }
 
             // Filling up the page

-            errno = inode->default_fops->read(inode, pg->pg, PG_SIZE, pg->fpos);
+            errno =
+              inode->default_fops->read_page(inode, pg->pg, PG_SIZE, pg->fpos);

             if (errno >= 0 && errno < PG_SIZE) {
                 // EOF
                 len = MIN(len, buf_off + errno);
             if (errno >= 0 && errno < PG_SIZE) {
                 // EOF
                 len = MIN(len, buf_off + errno);


@@ -176,7 +178,7 @@ pcache_commit(struct v_inode* inode, struct pcache_pg* page)
     }
 
     int errno =
     }
 
     int errno =

-      inode->default_fops->write(inode, page->pg, PG_SIZE, page->fpos);
+      inode->default_fops->write_page(inode, page->pg, PG_SIZE, page->fpos);

 
     if (!errno) {
         page->flags &= ~PCACHE_DIRTY;
 
     if (!errno) {
         page->flags &= ~PCACHE_DIRTY;