X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=fs%2Fgfs2%2Fmeta_io.h;h=e037425bc0427e6cff31c6bda1bae2daa16cf626;hb=436058a49e0fb91c74454dbee9cfee6fb53b4336;hp=23c6a596fd9e5b409509ae26fe21361a60660b2c;hpb=71ec63c5d66b577a71910b82740751be73e81310;p=powerpc.git

diff --git a/fs/gfs2/meta_io.h b/fs/gfs2/meta_io.h
index 23c6a596fd..e037425bc0 100644
--- a/fs/gfs2/meta_io.h
+++ b/fs/gfs2/meta_io.h
@@ -4,12 +4,16 @@
  *
  * This copyrighted material is made available to anyone wishing to use,
  * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License v.2.
+ * of the GNU General Public License version 2.
  */
 
 #ifndef __DIO_DOT_H__
 #define __DIO_DOT_H__
 
+#include <linux/buffer_head.h>
+#include <linux/string.h>
+#include "incore.h"
+
 static inline void gfs2_buffer_clear(struct buffer_head *bh)
 {
 	memset(bh->b_data, 0, bh->b_size);
@@ -17,52 +21,32 @@ static inline void gfs2_buffer_clear(struct buffer_head *bh)
 
 static inline void gfs2_buffer_clear_tail(struct buffer_head *bh, int head)
 {
+	BUG_ON(head > bh->b_size);
 	memset(bh->b_data + head, 0, bh->b_size - head);
 }
 
-static inline void gfs2_buffer_clear_ends(struct buffer_head *bh, int offset,
-					  int amount, int journaled)
-{
-	int z_off1 = (journaled) ? sizeof(struct gfs2_meta_header) : 0;
-	int z_len1 = offset - z_off1;
-	int z_off2 = offset + amount;
-	int z_len2 = (bh)->b_size - z_off2;
-
-	if (z_len1)
-		memset(bh->b_data + z_off1, 0, z_len1);
-
-	if (z_len2)
-		memset(bh->b_data + z_off2, 0, z_len2);
-}
-
 static inline void gfs2_buffer_copy_tail(struct buffer_head *to_bh,
 					 int to_head,
 					 struct buffer_head *from_bh,
 					 int from_head)
 {
-	memcpy(to_bh->b_data + to_head,
-	       from_bh->b_data + from_head,
+	BUG_ON(from_head < to_head);
+	memcpy(to_bh->b_data + to_head, from_bh->b_data + from_head,
 	       from_bh->b_size - from_head);
 	memset(to_bh->b_data + to_bh->b_size + to_head - from_head,
-	       0,
-	       from_head - to_head);
+	       0, from_head - to_head);
 }
 
 struct inode *gfs2_aspace_get(struct gfs2_sbd *sdp);
 void gfs2_aspace_put(struct inode *aspace);
 
-void gfs2_ail1_start_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai);
-int gfs2_ail1_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai, int flags);
-void gfs2_ail2_empty_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai);
-void gfs2_ail_empty_gl(struct gfs2_glock *gl);
-
 void gfs2_meta_inval(struct gfs2_glock *gl);
-void gfs2_meta_sync(struct gfs2_glock *gl, int flags);
+void gfs2_meta_sync(struct gfs2_glock *gl);
 
-struct buffer_head *gfs2_meta_new(struct gfs2_glock *gl, uint64_t blkno);
-int gfs2_meta_read(struct gfs2_glock *gl, uint64_t blkno,
+struct buffer_head *gfs2_meta_new(struct gfs2_glock *gl, u64 blkno);
+int gfs2_meta_read(struct gfs2_glock *gl, u64 blkno,
 		   int flags, struct buffer_head **bhp);
-int gfs2_meta_reread(struct gfs2_sbd *sdp, struct buffer_head *bh, int flags);
+int gfs2_meta_wait(struct gfs2_sbd *sdp, struct buffer_head *bh);
 
 void gfs2_attach_bufdata(struct gfs2_glock *gl, struct buffer_head *bh,
 			 int meta);
@@ -70,10 +54,10 @@ void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh);
 void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh,
 		struct gfs2_ail *ai);
 
-void gfs2_meta_wipe(struct gfs2_inode *ip, uint64_t bstart, uint32_t blen);
+void gfs2_meta_wipe(struct gfs2_inode *ip, u64 bstart, u32 blen);
 
 void gfs2_meta_cache_flush(struct gfs2_inode *ip);
-int gfs2_meta_indirect_buffer(struct gfs2_inode *ip, int height, uint64_t num,
+int gfs2_meta_indirect_buffer(struct gfs2_inode *ip, int height, u64 num,
 			      int new, struct buffer_head **bhp);
 
 static inline int gfs2_meta_inode_buffer(struct gfs2_inode *ip,
@@ -82,8 +66,12 @@ static inline int gfs2_meta_inode_buffer(struct gfs2_inode *ip,
 	return gfs2_meta_indirect_buffer(ip, 0, ip->i_num.no_addr, 0, bhp);
 }
 
-void gfs2_meta_ra(struct gfs2_glock *gl, uint64_t dblock, uint32_t extlen);
-void gfs2_meta_syncfs(struct gfs2_sbd *sdp);
+struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen);
+
+#define buffer_busy(bh) \
+((bh)->b_state & ((1ul << BH_Dirty) | (1ul << BH_Lock) | (1ul << BH_Pinned)))
+#define buffer_in_io(bh) \
+((bh)->b_state & ((1ul << BH_Dirty) | (1ul << BH_Lock)))
 
 #endif /* __DIO_DOT_H__ */