[XFS] kill xfs_iocore_t

xfs_iocore_t is a structure embedded in xfs_inode. Except for one field it just duplicates fields already in xfs_inode, and there is nothing this abstraction buys us on XFS/Linux. This patch removes it and shrinks source and binary size of xfs aswell as shrinking the size of xfs_inode by 60/44 bytes in debug/non-debug builds. SGI-PV: 970852 SGI-Modid: xfs-linux-melb:xfs-kern:29754a Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: Lachlan McIlroy <[email protected]> Signed-off-by: Tim Shimmin <[email protected]>
yshchan · Feb 7, 2008 · 613d704 · 613d704
1 parent 007c61c
commit 613d704
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Showing 13 changed files with 54 additions and 211 deletions.
diff --git a/fs/xfs/Makefile-linux-2.6 b/fs/xfs/Makefile-linux-2.6
@@ -70,7 +70,6 @@ xfs-y				+= xfs_alloc.o \
 				   xfs_iget.o \
 				   xfs_inode.o \
 				   xfs_inode_item.o \
-				   xfs_iocore.o \
 				   xfs_iomap.o \
 				   xfs_itable.o \
 				   xfs_dfrag.o \

diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c
@@ -163,7 +163,7 @@ xfs_destroy_ioend(
 /*
  * Update on-disk file size now that data has been written to disk.
  * The current in-memory file size is i_size.  If a write is beyond
- * eof io_new_size will be the intended file size until i_size is
+ * eof i_new_size will be the intended file size until i_size is
  * updated.  If this write does not extend all the way to the valid
  * file size then restrict this update to the end of the write.
  */
@@ -185,7 +185,7 @@ xfs_setfilesize(
 
 	xfs_ilock(ip, XFS_ILOCK_EXCL);
 
-	isize = MAX(ip->i_size, ip->i_iocore.io_new_size);
+	isize = MAX(ip->i_size, ip->i_new_size);
 	isize = MIN(isize, bsize);
 
 	if (ip->i_d.di_size < isize) {

diff --git a/fs/xfs/linux-2.6/xfs_lrw.c b/fs/xfs/linux-2.6/xfs_lrw.c
@@ -58,14 +58,12 @@
 void
 xfs_rw_enter_trace(
 	int			tag,
-	xfs_iocore_t		*io,
+	xfs_inode_t		*ip,
 	void			*data,
 	size_t			segs,
 	loff_t			offset,
 	int			ioflags)
 {
-	xfs_inode_t	*ip = XFS_IO_INODE(io);
-
 	if (ip->i_rwtrace == NULL)
 		return;
 	ktrace_enter(ip->i_rwtrace,
@@ -78,8 +76,8 @@ xfs_rw_enter_trace(
 		(void *)((unsigned long)((offset >> 32) & 0xffffffff)),
 		(void *)((unsigned long)(offset & 0xffffffff)),
 		(void *)((unsigned long)ioflags),
-		(void *)((unsigned long)((io->io_new_size >> 32) & 0xffffffff)),
-		(void *)((unsigned long)(io->io_new_size & 0xffffffff)),
+		(void *)((unsigned long)((ip->i_new_size >> 32) & 0xffffffff)),
+		(void *)((unsigned long)(ip->i_new_size & 0xffffffff)),
 		(void *)((unsigned long)current_pid()),
 		(void *)NULL,
 		(void *)NULL,
@@ -89,13 +87,12 @@ xfs_rw_enter_trace(
 
 void
 xfs_inval_cached_trace(
-	xfs_iocore_t	*io,
+	xfs_inode_t	*ip,
 	xfs_off_t	offset,
 	xfs_off_t	len,
 	xfs_off_t	first,
 	xfs_off_t	last)
 {
-	xfs_inode_t	*ip = XFS_IO_INODE(io);
 
 	if (ip->i_rwtrace == NULL)
 		return;
@@ -256,7 +253,7 @@ xfs_read(
 		}
 	}
 
-	xfs_rw_enter_trace(XFS_READ_ENTER, &ip->i_iocore,
+	xfs_rw_enter_trace(XFS_READ_ENTER, ip,
 				(void *)iovp, segs, *offset, ioflags);
 
 	iocb->ki_pos = *offset;
@@ -301,7 +298,7 @@ xfs_splice_read(
 			return -error;
 		}
 	}
-	xfs_rw_enter_trace(XFS_SPLICE_READ_ENTER, &ip->i_iocore,
+	xfs_rw_enter_trace(XFS_SPLICE_READ_ENTER, ip,
 			   pipe, count, *ppos, ioflags);
 	ret = generic_file_splice_read(infilp, ppos, pipe, count, flags);
 	if (ret > 0)
@@ -323,7 +320,6 @@ xfs_splice_write(
 {
 	bhv_vnode_t		*vp = XFS_ITOV(ip);
 	xfs_mount_t		*mp = ip->i_mount;
-	xfs_iocore_t		*io = &ip->i_iocore;
 	ssize_t			ret;
 	struct inode		*inode = outfilp->f_mapping->host;
 	xfs_fsize_t		isize, new_size;
@@ -350,10 +346,10 @@ xfs_splice_write(
 
 	xfs_ilock(ip, XFS_ILOCK_EXCL);
 	if (new_size > ip->i_size)
-		io->io_new_size = new_size;
+		ip->i_new_size = new_size;
 	xfs_iunlock(ip, XFS_ILOCK_EXCL);
 
-	xfs_rw_enter_trace(XFS_SPLICE_WRITE_ENTER, &ip->i_iocore,
+	xfs_rw_enter_trace(XFS_SPLICE_WRITE_ENTER, ip,
 			   pipe, count, *ppos, ioflags);
 	ret = generic_file_splice_write(pipe, outfilp, ppos, count, flags);
 	if (ret > 0)
@@ -370,9 +366,9 @@ xfs_splice_write(
 		xfs_iunlock(ip, XFS_ILOCK_EXCL);
 	}
 
-	if (io->io_new_size) {
+	if (ip->i_new_size) {
 		xfs_ilock(ip, XFS_ILOCK_EXCL);
-		io->io_new_size = 0;
+		ip->i_new_size = 0;
 		if (ip->i_d.di_size > ip->i_size)
 			ip->i_d.di_size = ip->i_size;
 		xfs_iunlock(ip, XFS_ILOCK_EXCL);
@@ -461,20 +457,19 @@ xfs_zero_eof(
 	xfs_off_t	offset,		/* starting I/O offset */
 	xfs_fsize_t	isize)		/* current inode size */
 {
-	xfs_iocore_t	*io = &ip->i_iocore;
+	xfs_mount_t	*mp = ip->i_mount;
 	xfs_fileoff_t	start_zero_fsb;
 	xfs_fileoff_t	end_zero_fsb;
 	xfs_fileoff_t	zero_count_fsb;
 	xfs_fileoff_t	last_fsb;
 	xfs_fileoff_t	zero_off;
 	xfs_fsize_t	zero_len;
-	xfs_mount_t	*mp = io->io_mount;
 	int		nimaps;
 	int		error = 0;
 	xfs_bmbt_irec_t	imap;
 
-	ASSERT(ismrlocked(io->io_lock, MR_UPDATE));
-	ASSERT(ismrlocked(io->io_iolock, MR_UPDATE));
+	ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE));
+	ASSERT(ismrlocked(&ip->i_iolock, MR_UPDATE));
 	ASSERT(offset > isize);
 
 	/*
@@ -483,8 +478,8 @@ xfs_zero_eof(
 	 */
 	error = xfs_zero_last_block(ip, offset, isize);
 	if (error) {
-		ASSERT(ismrlocked(io->io_lock, MR_UPDATE));
-		ASSERT(ismrlocked(io->io_iolock, MR_UPDATE));
+		ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE));
+		ASSERT(ismrlocked(&ip->i_iolock, MR_UPDATE));
 		return error;
 	}
 
@@ -515,8 +510,8 @@ xfs_zero_eof(
 		error = xfs_bmapi(NULL, ip, start_zero_fsb, zero_count_fsb,
 				  0, NULL, 0, &imap, &nimaps, NULL, NULL);
 		if (error) {
-			ASSERT(ismrlocked(io->io_lock, MR_UPDATE));
-			ASSERT(ismrlocked(io->io_iolock, MR_UPDATE));
+			ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE));
+			ASSERT(ismrlocked(&ip->i_iolock, MR_UPDATE));
 			return error;
 		}
 		ASSERT(nimaps > 0);
@@ -584,7 +579,6 @@ xfs_write(
 	xfs_mount_t		*mp;
 	ssize_t			ret = 0, error = 0;
 	xfs_fsize_t		isize, new_size;
-	xfs_iocore_t		*io;
 	int			iolock;
 	int			eventsent = 0;
 	bhv_vrwlock_t		locktype;
@@ -604,8 +598,7 @@ xfs_write(
 	if (count == 0)
 		return 0;
 
-	io = &xip->i_iocore;
-	mp = io->io_mount;
+	mp = xip->i_mount;
 
 	xfs_wait_for_freeze(mp, SB_FREEZE_WRITE);
 
@@ -685,7 +678,7 @@ xfs_write(
 
 	new_size = pos + count;
 	if (new_size > xip->i_size)
-		io->io_new_size = new_size;
+		xip->i_new_size = new_size;
 
 	if (likely(!(ioflags & IO_INVIS))) {
 		file_update_time(file);
@@ -737,7 +730,7 @@ xfs_write(
 	if ((ioflags & IO_ISDIRECT)) {
 		if (VN_CACHED(vp)) {
 			WARN_ON(need_i_mutex == 0);
-			xfs_inval_cached_trace(io, pos, -1,
+			xfs_inval_cached_trace(xip, pos, -1,
 					ctooff(offtoct(pos)), -1);
 			error = xfs_flushinval_pages(xip,
 					ctooff(offtoct(pos)),
@@ -756,7 +749,7 @@ xfs_write(
 			need_i_mutex = 0;
 		}
 
- 		xfs_rw_enter_trace(XFS_DIOWR_ENTER, io, (void *)iovp, segs,
+ 		xfs_rw_enter_trace(XFS_DIOWR_ENTER, xip, (void *)iovp, segs,
 				*offset, ioflags);
 		ret = generic_file_direct_write(iocb, iovp,
 				&segs, pos, offset, count, ocount);
@@ -776,7 +769,7 @@ xfs_write(
 			goto relock;
 		}
 	} else {
-		xfs_rw_enter_trace(XFS_WRITE_ENTER, io, (void *)iovp, segs,
+		xfs_rw_enter_trace(XFS_WRITE_ENTER, xip, (void *)iovp, segs,
 				*offset, ioflags);
 		ret = generic_file_buffered_write(iocb, iovp, segs,
 				pos, offset, count, ret);
@@ -840,9 +833,9 @@ xfs_write(
 	}
 
  out_unlock_internal:
-	if (io->io_new_size) {
+	if (xip->i_new_size) {
 		xfs_ilock(xip, XFS_ILOCK_EXCL);
-		io->io_new_size = 0;
+		xip->i_new_size = 0;
 		/*
 		 * If this was a direct or synchronous I/O that failed (such
 		 * as ENOSPC) then part of the I/O may have been written to

diff --git a/fs/xfs/linux-2.6/xfs_lrw.h b/fs/xfs/linux-2.6/xfs_lrw.h
@@ -19,7 +19,6 @@
 #define __XFS_LRW_H__
 
 struct xfs_mount;
-struct xfs_iocore;
 struct xfs_inode;
 struct xfs_bmbt_irec;
 struct xfs_buf;
@@ -60,13 +59,13 @@ struct xfs_iomap;
 #define	XFS_IOMAP_UNWRITTEN	27
 #define XFS_SPLICE_READ_ENTER	28
 #define XFS_SPLICE_WRITE_ENTER	29
-extern void xfs_rw_enter_trace(int, struct xfs_iocore *,
-				void *, size_t, loff_t, int);
-extern void xfs_inval_cached_trace(struct xfs_iocore *,
-				xfs_off_t, xfs_off_t, xfs_off_t, xfs_off_t);
+extern void xfs_rw_enter_trace(int, struct xfs_inode *,
+		void *, size_t, loff_t, int);
+extern void xfs_inval_cached_trace(struct xfs_inode *,
+		xfs_off_t, xfs_off_t, xfs_off_t, xfs_off_t);
 #else
-#define xfs_rw_enter_trace(tag, io, data, size, offset, ioflags)
-#define xfs_inval_cached_trace(io, offset, len, first, last)
+#define xfs_rw_enter_trace(tag, ip, data, size, offset, ioflags)
+#define xfs_inval_cached_trace(ip, offset, len, first, last)
 #endif
 
 extern int xfsbdstrat(struct xfs_mount *, struct xfs_buf *);

diff --git a/fs/xfs/xfs_dfrag.c b/fs/xfs/xfs_dfrag.c
@@ -199,7 +199,7 @@ xfs_swap_extents(
 	}
 
 	if (VN_CACHED(tvp) != 0) {
-		xfs_inval_cached_trace(&tip->i_iocore, 0, -1, 0, -1);
+		xfs_inval_cached_trace(tip, 0, -1, 0, -1);
 		error = xfs_flushinval_pages(tip, 0, -1,
 				FI_REMAPF_LOCKED);
 		if (error)

diff --git a/fs/xfs/xfs_iget.c b/fs/xfs/xfs_iget.c
@@ -199,12 +199,9 @@ xfs_iget_core(
 		XFS_STATS_INC(xs_ig_found);
 
 finish_inode:
-		if (ip->i_d.di_mode == 0) {
-			if (!(flags & XFS_IGET_CREATE)) {
-				xfs_put_perag(mp, pag);
-				return ENOENT;
-			}
-			xfs_iocore_inode_reinit(ip);
+		if (ip->i_d.di_mode == 0 && !(flags & XFS_IGET_CREATE)) {
+			xfs_put_perag(mp, pag);
+			return ENOENT;
 		}
 
 		if (lock_flags != 0)
@@ -235,7 +232,6 @@ xfs_iget_core(
 	xfs_itrace_exit_tag(ip, "xfs_iget.alloc");
 
 	xfs_inode_lock_init(ip, vp);
-	xfs_iocore_inode_init(ip);
 	if (lock_flags)
 		xfs_ilock(ip, lock_flags);
 
@@ -331,9 +327,6 @@ xfs_iget_core(
 	ASSERT(ip->i_df.if_ext_max ==
 	       XFS_IFORK_DSIZE(ip) / sizeof(xfs_bmbt_rec_t));
 
-	ASSERT(((ip->i_d.di_flags & XFS_DIFLAG_REALTIME) != 0) ==
-	       ((ip->i_iocore.io_flags & XFS_IOCORE_RT) != 0));
-
 	xfs_iflags_set(ip, XFS_IMODIFIED);
 	*ipp = ip;
 

diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
@@ -1220,10 +1220,8 @@ xfs_ialloc(
 					ip->i_d.di_extsize = pip->i_d.di_extsize;
 				}
 			} else if ((mode & S_IFMT) == S_IFREG) {
-				if (pip->i_d.di_flags & XFS_DIFLAG_RTINHERIT) {
+				if (pip->i_d.di_flags & XFS_DIFLAG_RTINHERIT)
 					di_flags |= XFS_DIFLAG_REALTIME;
-					ip->i_iocore.io_flags |= XFS_IOCORE_RT;
-				}
 				if (pip->i_d.di_flags & XFS_DIFLAG_EXTSZINHERIT) {
 					di_flags |= XFS_DIFLAG_EXTSIZE;
 					ip->i_d.di_extsize = pip->i_d.di_extsize;

diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
@@ -132,45 +132,6 @@ typedef struct dm_attrs_s {
 	__uint16_t	da_pad;		/* DMIG extra padding */
 } dm_attrs_t;
 
-typedef struct xfs_iocore {
-	void			*io_obj;	/* pointer to container
-						 * inode or dcxvn structure */
-	struct xfs_mount	*io_mount;	/* fs mount struct ptr */
-#ifdef DEBUG
-	mrlock_t		*io_lock;	/* inode IO lock */
-	mrlock_t		*io_iolock;	/* inode IO lock */
-#endif
-
-	/* I/O state */
-	xfs_fsize_t		io_new_size;	/* sz when write completes */
-
-	/* Miscellaneous state. */
-	unsigned int		io_flags;	/* IO related flags */
-
-	/* DMAPI state */
-	dm_attrs_t		io_dmattrs;
-
-} xfs_iocore_t;
-
-#define        io_dmevmask     io_dmattrs.da_dmevmask
-#define        io_dmstate      io_dmattrs.da_dmstate
-
-#define XFS_IO_INODE(io)	((xfs_inode_t *) ((io)->io_obj))
-#define XFS_IO_DCXVN(io)	((dcxvn_t *) ((io)->io_obj))
-
-/*
- * Flags in the flags field
- */
-
-#define XFS_IOCORE_RT		0x1
-
-/*
- * xfs_iocore prototypes
- */
-
-extern void xfs_iocore_inode_init(struct xfs_inode *);
-extern void xfs_iocore_inode_reinit(struct xfs_inode *);
-
 /*
  * This is the xfs inode cluster structure.  This structure is used by
  * xfs_iflush to find inodes that share a cluster and can be flushed to disk at
@@ -283,9 +244,6 @@ typedef struct xfs_inode {
 	struct xfs_inode	**i_refcache;	/* ptr to entry in ref cache */
 	struct xfs_inode	*i_release;	/* inode to unref */
 #endif
-	/* I/O state */
-	xfs_iocore_t		i_iocore;	/* I/O core */
-
 	/* Miscellaneous state. */
 	unsigned short		i_flags;	/* see defined flags below */
 	unsigned char		i_update_core;	/* timestamps/size is dirty */
@@ -298,6 +256,7 @@ typedef struct xfs_inode {
 	struct hlist_node	i_cnode;	/* cluster link node */
 
 	xfs_fsize_t		i_size;		/* in-memory size */
+	xfs_fsize_t		i_new_size;	/* size when write completes */
 	atomic_t		i_iocount;	/* outstanding I/O count */
 	/* Trace buffers per inode. */
 #ifdef XFS_INODE_TRACE