1 files changed, 80 insertions, 97 deletions

diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c
index 7cf33379fd4..61e8a9b021d 100644
--- a/fs/ufs/inode.c
+++ b/fs/ufs/inode.c
@@ -26,7 +26,6 @@
  */
 
 #include <asm/uaccess.h>
-#include <asm/system.h>
 
 #include <linux/errno.h>
 #include <linux/fs.h>
@@ -34,15 +33,15 @@
 #include <linux/stat.h>
 #include <linux/string.h>
 #include <linux/mm.h>
-#include <linux/smp_lock.h>
 #include <linux/buffer_head.h>
+#include <linux/writeback.h>
 
 #include "ufs_fs.h"
 #include "ufs.h"
 #include "swab.h"
 #include "util.h"
 
-static u64 ufs_frag_map(struct inode *inode, sector_t frag);
+static u64 ufs_frag_map(struct inode *inode, sector_t frag, bool needs_lock);
 
 static int ufs_block_to_path(struct inode *inode, sector_t i_block, sector_t offsets[4])
 {
@@ -78,10 +77,10 @@ static int ufs_block_to_path(struct inode *inode, sector_t i_block, sector_t off
 
 /*
  * Returns the location of the fragment from
- * the begining of the filesystem.
+ * the beginning of the filesystem.
  */
 
-static u64 ufs_frag_map(struct inode *inode, sector_t frag)
+static u64 ufs_frag_map(struct inode *inode, sector_t frag, bool needs_lock)
 {
 	struct ufs_inode_info *ufsi = UFS_I(inode);
 	struct super_block *sb = inode->i_sb;
@@ -106,7 +105,8 @@ static u64 ufs_frag_map(struct inode *inode, sector_t frag)
 
 	p = offsets;
 
-	lock_kernel();
+	if (needs_lock)
+		lock_ufs(sb);
 	if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
 		goto ufs2;
 
@@ -151,7 +151,8 @@ ufs2:
 	ret = temp + (u64) (frag & uspi->s_fpbmask);
 
 out:
-	unlock_kernel();
+	if (needs_lock)
+		unlock_ufs(sb);
 	return ret;
 }
 
@@ -407,21 +408,23 @@ out:
 }
 
 /**
- * ufs_getfrag_bloc() - `get_block_t' function, interface between UFS and
+ * ufs_getfrag_block() - `get_block_t' function, interface between UFS and
  * readpage, writepage and so on
  */
 
 int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create)
 {
 	struct super_block * sb = inode->i_sb;
-	struct ufs_sb_private_info * uspi = UFS_SB(sb)->s_uspi;
+	struct ufs_sb_info * sbi = UFS_SB(sb);
+	struct ufs_sb_private_info * uspi = sbi->s_uspi;
 	struct buffer_head * bh;
 	int ret, err, new;
 	unsigned long ptr,phys;
 	u64 phys64 = 0;
+	bool needs_lock = (sbi->mutex_owner != current);
 	
 	if (!create) {
-		phys64 = ufs_frag_map(inode, fragment);
+		phys64 = ufs_frag_map(inode, fragment, needs_lock);
 		UFSD("phys64 = %llu\n", (unsigned long long)phys64);
 		if (phys64)
 			map_bh(bh_result, sb, phys64);
@@ -435,7 +438,8 @@ int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head
 	ret = 0;
 	bh = NULL;
 
-	lock_kernel();
+	if (needs_lock)
+		lock_ufs(sb);
 
 	UFSD("ENTER, ino %lu, fragment %llu\n", inode->i_ino, (unsigned long long)fragment);
 	if (fragment >
@@ -497,7 +501,9 @@ out:
 		set_buffer_new(bh_result);
 	map_bh(bh_result, sb, phys);
 abort:
-	unlock_kernel();
+	if (needs_lock)
+		unlock_ufs(sb);
+
 	return err;
 
 abort_too_big:
@@ -505,48 +511,6 @@ abort_too_big:
 	goto abort;
 }
 
-static struct buffer_head *ufs_getfrag(struct inode *inode,
-				       unsigned int fragment,
-				       int create, int *err)
-{
-	struct buffer_head dummy;
-	int error;
-
-	dummy.b_state = 0;
-	dummy.b_blocknr = -1000;
-	error = ufs_getfrag_block(inode, fragment, &dummy, create);
-	*err = error;
-	if (!error && buffer_mapped(&dummy)) {
-		struct buffer_head *bh;
-		bh = sb_getblk(inode->i_sb, dummy.b_blocknr);
-		if (buffer_new(&dummy)) {
-			memset(bh->b_data, 0, inode->i_sb->s_blocksize);
-			set_buffer_uptodate(bh);
-			mark_buffer_dirty(bh);
-		}
-		return bh;
-	}
-	return NULL;
-}
-
-struct buffer_head * ufs_bread (struct inode * inode, unsigned fragment,
-	int create, int * err)
-{
-	struct buffer_head * bh;
-
-	UFSD("ENTER, ino %lu, fragment %u\n", inode->i_ino, fragment);
-	bh = ufs_getfrag (inode, fragment, create, err);
-	if (!bh || buffer_uptodate(bh)) 		
-		return bh;
-	ll_rw_block (READ, 1, &bh);
-	wait_on_buffer (bh);
-	if (buffer_uptodate(bh))
-		return bh;
-	brelse (bh);
-	*err = -EIO;
-	return NULL;
-}
-
 static int ufs_writepage(struct page *page, struct writeback_control *wbc)
 {
 	return block_write_full_page(page,ufs_getfrag_block,wbc);
@@ -557,20 +521,31 @@ static int ufs_readpage(struct file *file, struct page *page)
 	return block_read_full_page(page,ufs_getfrag_block);
 }
 
-int __ufs_write_begin(struct file *file, struct address_space *mapping,
-			loff_t pos, unsigned len, unsigned flags,
-			struct page **pagep, void **fsdata)
+int ufs_prepare_chunk(struct page *page, loff_t pos, unsigned len)
 {
-	return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
-				ufs_getfrag_block);
+	return __block_write_begin(page, pos, len, ufs_getfrag_block);
+}
+
+static void ufs_write_failed(struct address_space *mapping, loff_t to)
+{
+	struct inode *inode = mapping->host;
+
+	if (to > inode->i_size)
+		truncate_pagecache(inode, inode->i_size);
 }
 
 static int ufs_write_begin(struct file *file, struct address_space *mapping,
 			loff_t pos, unsigned len, unsigned flags,
 			struct page **pagep, void **fsdata)
 {
-	*pagep = NULL;
-	return __ufs_write_begin(file, mapping, pos, len, flags, pagep, fsdata);
+	int ret;
+
+	ret = block_write_begin(mapping, pos, len, flags, pagep,
+				ufs_getfrag_block);
+	if (unlikely(ret))
+		ufs_write_failed(mapping, pos + len);
+
+	return ret;
 }
 
 static sector_t ufs_bmap(struct address_space *mapping, sector_t block)
@@ -581,7 +556,6 @@ static sector_t ufs_bmap(struct address_space *mapping, sector_t block)
 const struct address_space_operations ufs_aops = {
 	.readpage = ufs_readpage,
 	.writepage = ufs_writepage,
-	.sync_page = block_sync_page,
 	.write_begin = ufs_write_begin,
 	.write_end = generic_write_end,
 	.bmap = ufs_bmap
@@ -601,7 +575,7 @@ static void ufs_set_inode_ops(struct inode *inode)
 		if (!inode->i_blocks)
 			inode->i_op = &ufs_fast_symlink_inode_operations;
 		else {
-			inode->i_op = &page_symlink_inode_operations;
+			inode->i_op = &ufs_symlink_inode_operations;
 			inode->i_mapping->a_ops = &ufs_aops;
 		}
 	} else
@@ -613,13 +587,13 @@ static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode)
 {
 	struct ufs_inode_info *ufsi = UFS_I(inode);
 	struct super_block *sb = inode->i_sb;
-	mode_t mode;
+	umode_t mode;
 
 	/*
 	 * Copy data to the in-core inode.
 	 */
 	inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode);
-	inode->i_nlink = fs16_to_cpu(sb, ufs_inode->ui_nlink);
+	set_nlink(inode, fs16_to_cpu(sb, ufs_inode->ui_nlink));
 	if (inode->i_nlink == 0) {
 		ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino);
 		return -1;
@@ -628,8 +602,8 @@ static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode)
 	/*
 	 * Linux now has 32-bit uid and gid, so we can support EFT.
 	 */
-	inode->i_uid = ufs_get_inode_uid(sb, ufs_inode);
-	inode->i_gid = ufs_get_inode_gid(sb, ufs_inode);
+	i_uid_write(inode, ufs_get_inode_uid(sb, ufs_inode));
+	i_gid_write(inode, ufs_get_inode_gid(sb, ufs_inode));
 
 	inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size);
 	inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec);
@@ -660,14 +634,14 @@ static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode)
 {
 	struct ufs_inode_info *ufsi = UFS_I(inode);
 	struct super_block *sb = inode->i_sb;
-	mode_t mode;
+	umode_t mode;
 
 	UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino);
 	/*
 	 * Copy data to the in-core inode.
 	 */
 	inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode);
-	inode->i_nlink = fs16_to_cpu(sb, ufs2_inode->ui_nlink);
+	set_nlink(inode, fs16_to_cpu(sb, ufs2_inode->ui_nlink));
 	if (inode->i_nlink == 0) {
 		ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino);
 		return -1;
@@ -676,8 +650,8 @@ static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode)
         /*
          * Linux now has 32-bit uid and gid, so we can support EFT.
          */
-	inode->i_uid = fs32_to_cpu(sb, ufs2_inode->ui_uid);
-	inode->i_gid = fs32_to_cpu(sb, ufs2_inode->ui_gid);
+	i_uid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_uid));
+	i_gid_write(inode, fs32_to_cpu(sb, ufs2_inode->ui_gid));
 
 	inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size);
 	inode->i_atime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_atime);
@@ -776,8 +750,8 @@ static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode)
 	ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode);
 	ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink);
 
-	ufs_set_inode_uid(sb, ufs_inode, inode->i_uid);
-	ufs_set_inode_gid(sb, ufs_inode, inode->i_gid);
+	ufs_set_inode_uid(sb, ufs_inode, i_uid_read(inode));
+	ufs_set_inode_gid(sb, ufs_inode, i_gid_read(inode));
 		
 	ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size);
 	ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec);
@@ -820,8 +794,8 @@ static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode)
 	ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode);
 	ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink);
 
-	ufs_inode->ui_uid = cpu_to_fs32(sb, inode->i_uid);
-	ufs_inode->ui_gid = cpu_to_fs32(sb, inode->i_gid);
+	ufs_inode->ui_uid = cpu_to_fs32(sb, i_uid_read(inode));
+	ufs_inode->ui_gid = cpu_to_fs32(sb, i_gid_read(inode));
 
 	ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size);
 	ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec);
@@ -890,12 +864,12 @@ static int ufs_update_inode(struct inode * inode, int do_sync)
 	return 0;
 }
 
-int ufs_write_inode (struct inode * inode, int wait)
+int ufs_write_inode(struct inode *inode, struct writeback_control *wbc)
 {
 	int ret;
-	lock_kernel();
-	ret = ufs_update_inode (inode, wait);
-	unlock_kernel();
+	lock_ufs(inode->i_sb);
+	ret = ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
+	unlock_ufs(inode->i_sb);
 	return ret;
 }
 
@@ -904,24 +878,33 @@ int ufs_sync_inode (struct inode *inode)
 	return ufs_update_inode (inode, 1);
 }
 
-void ufs_delete_inode (struct inode * inode)
+void ufs_evict_inode(struct inode * inode)
 {
-	loff_t old_i_size;
+	int want_delete = 0;
+
+	if (!inode->i_nlink && !is_bad_inode(inode))
+		want_delete = 1;
+
+	truncate_inode_pages_final(&inode->i_data);
+	if (want_delete) {
+		loff_t old_i_size;
+		/*UFS_I(inode)->i_dtime = CURRENT_TIME;*/
+		lock_ufs(inode->i_sb);
+		mark_inode_dirty(inode);
+		ufs_update_inode(inode, IS_SYNC(inode));
+		old_i_size = inode->i_size;
+		inode->i_size = 0;
+		if (inode->i_blocks && ufs_truncate(inode, old_i_size))
+			ufs_warning(inode->i_sb, __func__, "ufs_truncate failed\n");
+		unlock_ufs(inode->i_sb);
+	}
 
-	truncate_inode_pages(&inode->i_data, 0);
-	if (is_bad_inode(inode))
-		goto no_delete;
-	/*UFS_I(inode)->i_dtime = CURRENT_TIME;*/
-	lock_kernel();
-	mark_inode_dirty(inode);
-	ufs_update_inode(inode, IS_SYNC(inode));
-	old_i_size = inode->i_size;
-	inode->i_size = 0;
-	if (inode->i_blocks && ufs_truncate(inode, old_i_size))
-		ufs_warning(inode->i_sb, __func__, "ufs_truncate failed\n");
-	ufs_free_inode (inode);
-	unlock_kernel();
-	return;
-no_delete:
-	clear_inode(inode);	/* We must guarantee clearing of inode... */
+	invalidate_inode_buffers(inode);
+	clear_inode(inode);
+
+	if (want_delete) {
+		lock_ufs(inode->i_sb);
+		ufs_free_inode (inode);
+		unlock_ufs(inode->i_sb);
+	}
 }