patch-2.4.0-prerelease linux/include/linux/shmem_fs.h

• Lines: 38
• Date: Fri Dec 29 14:07:24 2000
• Orig file: v2.4.0-test12/linux/include/linux/shmem_fs.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.0-test12/linux/include/linux/shmem_fs.h linux/include/linux/shmem_fs.h
@@ -0,0 +1,37 @@
+#ifndef __SHMEM_FS_H
+#define __SHMEM_FS_H
+
+/* inode in-kernel data */
+
+#define SHMEM_NR_DIRECT 16
+
+/*
+ * A swap entry has to fit into a "unsigned long", as
+ * the entry is hidden in the "index" field of the
+ * swapper address space.
+ *
+ * We have to move it here, since not every user of fs.h is including
+ * mm.h, but m.h is including fs.h via sched .h :-/
+ */
+typedef struct {
+	unsigned long val;
+} swp_entry_t;
+
+struct shmem_inode_info {
+	spinlock_t	lock;
+	swp_entry_t	i_direct[SHMEM_NR_DIRECT]; /* for the first blocks */
+	swp_entry_t   **i_indirect; /* doubly indirect blocks */
+	unsigned long	swapped;
+	int		locked;     /* into memory */
+	struct list_head	list;
+};
+
+struct shmem_sb_info {
+	unsigned long max_blocks;   /* How many blocks are allowed */
+	unsigned long free_blocks;  /* How many are left for allocation */
+	unsigned long max_inodes;   /* How many inodes are allowed */
+	unsigned long free_inodes;  /* How many are left for allocation */
+	spinlock_t    stat_lock;
+};
+
+#endif