#ifndef _OBDFS_H
#define _OBDFS_H
#include <linux/obd_class.h>
-#include <linux/obdo.h>
#include <linux/list.h>
+static __inline__ struct obdo *obdo_fromid(struct lustre_handle *conn, obd_id id,
+ obd_mode mode, obd_flag valid)
+{
+ struct obdo *oa;
+ int err;
+
+ ENTRY;
+ oa = obdo_alloc();
+ if ( !oa ) {
+ RETURN(ERR_PTR(-ENOMEM));
+ }
+
+ oa->o_id = id;
+ oa->o_mode = mode;
+ oa->o_valid = valid;
+ if ((err = obd_getattr(conn, oa))) {
+ obdo_free(oa);
+ RETURN(ERR_PTR(err));
+ }
+ RETURN(oa);
+}
+
+
+struct obdfs_inode_info {
+ int oi_flags;
+ struct list_head oi_inodes;
+ struct list_head oi_pages;
+ char oi_inline[OBD_INLINESZ];
+};
+
+struct obdfs_sb_info {
+ struct list_head osi_list; /* list of supers */
+ struct lustre_handle osi_conn;
+ struct super_block *osi_super;
+ struct obd_device *osi_obd;
+ ino_t osi_rootino; /* number of root inode */
+ int osi_minor; /* minor of /dev/obdX */
+ struct list_head osi_inodes; /* list of dirty inodes */
+ unsigned long osi_cache_count;
+ struct semaphore osi_list_mutex;
+};
+
+
+static inline struct obdfs_inode_info *obdfs_i2info(struct inode *inode)
+{
+ return (struct obdfs_inode_info *)&(inode->u.generic_ip);
+}
+
+static inline int obdfs_has_inline(struct inode *inode)
+{
+ return (obdfs_i2info(inode)->oi_flags & OBD_FL_INLINEDATA);
+}
+
+static void inline obdfs_from_inode(struct obdo *oa, struct inode *inode)
+{
+ struct obdfs_inode_info *oinfo = obdfs_i2info(inode);
+
+ CDEBUG(D_INFO, "src inode %ld, dst obdo %ld valid 0x%08x\n",
+ inode->i_ino, (long)oa->o_id, oa->o_valid);
+ obdo_from_inode(oa, inode);
+ if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
+ CDEBUG(D_INODE, "copying device %x from inode to obdo\n",
+ inode->i_rdev);
+ *((obd_rdev *)oa->o_inline) = kdev_t_to_nr(inode->i_rdev);
+ oa->o_obdflags |= OBD_FL_INLINEDATA;
+ oa->o_valid |= OBD_MD_FLINLINE;
+ } else if (obdfs_has_inline(inode)) {
+ CDEBUG(D_INODE, "copying inline data from inode to obdo\n");
+ memcpy(oa->o_inline, oinfo->oi_inline, OBD_INLINESZ);
+ oa->o_obdflags |= OBD_FL_INLINEDATA;
+ oa->o_valid |= OBD_MD_FLINLINE;
+ }
+} /* obdfs_from_inode */
+
+static void inline obdfs_to_inode(struct inode *inode, struct obdo *oa)
+{
+ struct obdfs_inode_info *oinfo = obdfs_i2info(inode);
+
+ CDEBUG(D_INFO, "src obdo %ld valid 0x%08x, dst inode %ld\n",
+ (long)oa->o_id, oa->o_valid, inode->i_ino);
+
+ obdo_to_inode(inode, oa);
+
+ if (obdo_has_inline(oa)) {
+ if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
+ S_ISFIFO(inode->i_mode)) {
+ obd_rdev rdev = *((obd_rdev *)oa->o_inline);
+ CDEBUG(D_INODE,
+ "copying device %x from obdo to inode\n", rdev);
+ init_special_inode(inode, inode->i_mode, rdev);
+ } else {
+ CDEBUG(D_INFO, "copying inline from obdo to inode\n");
+ memcpy(oinfo->oi_inline, oa->o_inline, OBD_INLINESZ);
+ }
+ oinfo->oi_flags |= OBD_FL_INLINEDATA;
+ }
+} /* obdfs_to_inode */
+
+#define NOLOCK 0
+#define LOCKED 1
+
+#ifdef OPS
+#warning "*** WARNING redefining OPS"
+#else
+#define OPS(sb,op) ((struct obdfs_sb_info *)(& (sb)->u.generic_sbp))->osi_ops->o_ ## op
+#define IOPS(inode,op) ((struct obdfs_sb_info *)(&(inode)->i_sb->u.generic_sbp))->osi_ops->o_ ## op
+#endif
+
+#ifdef ID
+#warning "*** WARNING redefining ID"
+#else
+#define ID(sb) (&((struct obdfs_sb_info *)( &(sb)->u.generic_sbp))->osi_conn)
+#define IID(inode) (&((struct obdfs_sb_info *)( &(inode)->i_sb->u.generic_sbp))->osi_conn)
+#endif
+
+#define OBDFS_SUPER_MAGIC 0x4711
+
/* super.c */
struct obdfs_pgrq {
struct list_head rq_plist; /* linked list of req's */
inode->i_sb->s_blocksize_bits;
} /* obdfs_set_size */
-
-#if 0 /* PAGE CACHE DISABLED */
-
-#define obd_down(mutex) { \
- /* CDEBUG(D_INFO, "get lock\n"); */ \
- obdfs_mutex_start = jiffies; \
- down(mutex); \
- if (jiffies - obdfs_mutex_start) \
- CDEBUG(D_CACHE, "waited on mutex %ld jiffies\n", \
- jiffies - obdfs_mutex_start); \
-}
-
-#define obd_up(mutex) { \
- up(mutex); \
- if (jiffies - obdfs_mutex_start > 1) \
- CDEBUG(D_CACHE, "held mutex for %ld jiffies\n", \
- jiffies - obdfs_mutex_start); \
- /* CDEBUG(D_INFO, "free lock\n"); */ \
-}
-
-/* We track if a page has been added to the OBD page cache by stting a
- * flag on the page. We have chosen a bit that will hopefully not be
- * used for a while.
- */
-#define PG_obdcache 29
-#define OBDAddCachePage(page) test_and_set_bit(PG_obdcache, &(page)->flags)
-#define OBDClearCachePage(page) clear_bit(PG_obdcache, &(page)->flags)
-
-static inline void obdfs_print_plist(struct inode *inode)
-{
- struct list_head *page_list = obdfs_iplist(inode);
- struct list_head *tmp;
-
- CDEBUG(D_INFO, "inode %ld: page", inode->i_ino);
- /* obd_down(&obdfs_i2sbi(inode)->osi_list_mutex); */
- if (list_empty(page_list)) {
- CDEBUG(D_INFO, " list empty\n");
- obd_up(&obdfs_i2sbi(inode)->osi_list_mutex);
- return;
- }
-
- tmp = page_list;
- while ( (tmp = tmp->next) != page_list) {
- struct obdfs_pgrq *pgrq;
- pgrq = list_entry(tmp, struct obdfs_pgrq, rq_plist);
- CDEBUG(D_INFO, " %p", pgrq->rq_page);
- }
- CDEBUG(D_INFO, "\n");
- /* obd_up(&obdfs_i2sbi(inode)->osi_list_mutex); */
-}
-#endif
-
-
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff