X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=fs%2Ffat%2Finode.c;h=f58cd48d98b8e09d352ed92e50792cb98630965e;hb=d3dfa8228f87ab9960ab8b4718013d68e3c25a43;hp=19eafbe3c379ae685c8f6f018ab5d152ef1ed9bd;hpb=f8aea20018aefa51bf818914c9c1ef9006353dbb;p=linux-2.6-omap-h63xx.git

diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 19eafbe3c37..f58cd48d98b 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -16,7 +16,6 @@
 #include <linux/slab.h>
 #include <linux/smp_lock.h>
 #include <linux/seq_file.h>
-#include <linux/msdos_fs.h>
 #include <linux/pagemap.h>
 #include <linux/mpage.h>
 #include <linux/buffer_head.h>
@@ -27,7 +26,9 @@
 #include <linux/uio.h>
 #include <linux/writeback.h>
 #include <linux/log2.h>
+#include <linux/hash.h>
 #include <asm/unaligned.h>
+#include "fat.h"
 
 #ifndef CONFIG_FAT_DEFAULT_IOCHARSET
 /* if user don't select VFAT, this is undefined. */
@@ -175,7 +176,7 @@ static ssize_t fat_direct_IO(int rw, struct kiocb *iocb,
 
 	if (rw == WRITE) {
 		/*
-		 * FIXME: blockdev_direct_IO() doesn't use ->prepare_write(),
+		 * FIXME: blockdev_direct_IO() doesn't use ->write_begin(),
 		 * so we need to update the ->mmu_private to block boundary.
 		 *
 		 * But we must fill the remaining area or hole by nul for
@@ -247,25 +248,21 @@ static void fat_hash_init(struct super_block *sb)
 		INIT_HLIST_HEAD(&sbi->inode_hashtable[i]);
 }
 
-static inline unsigned long fat_hash(struct super_block *sb, loff_t i_pos)
+static inline unsigned long fat_hash(loff_t i_pos)
 {
-	unsigned long tmp = (unsigned long)i_pos | (unsigned long) sb;
-	tmp = tmp + (tmp >> FAT_HASH_BITS) + (tmp >> FAT_HASH_BITS * 2);
-	return tmp & FAT_HASH_MASK;
+	return hash_32(i_pos, FAT_HASH_BITS);
 }
 
 void fat_attach(struct inode *inode, loff_t i_pos)
 {
-	struct super_block *sb = inode->i_sb;
-	struct msdos_sb_info *sbi = MSDOS_SB(sb);
+	struct msdos_sb_info *sbi = MSDOS_SB(inode->i_sb);
+	struct hlist_head *head = sbi->inode_hashtable + fat_hash(i_pos);
 
 	spin_lock(&sbi->inode_hash_lock);
 	MSDOS_I(inode)->i_pos = i_pos;
-	hlist_add_head(&MSDOS_I(inode)->i_fat_hash,
-			sbi->inode_hashtable + fat_hash(sb, i_pos));
+	hlist_add_head(&MSDOS_I(inode)->i_fat_hash, head);
 	spin_unlock(&sbi->inode_hash_lock);
 }
-
 EXPORT_SYMBOL_GPL(fat_attach);
 
 void fat_detach(struct inode *inode)
@@ -276,13 +273,12 @@ void fat_detach(struct inode *inode)
 	hlist_del_init(&MSDOS_I(inode)->i_fat_hash);
 	spin_unlock(&sbi->inode_hash_lock);
 }
-
 EXPORT_SYMBOL_GPL(fat_detach);
 
 struct inode *fat_iget(struct super_block *sb, loff_t i_pos)
 {
 	struct msdos_sb_info *sbi = MSDOS_SB(sb);
-	struct hlist_head *head = sbi->inode_hashtable + fat_hash(sb, i_pos);
+	struct hlist_head *head = sbi->inode_hashtable + fat_hash(i_pos);
 	struct hlist_node *_p;
 	struct msdos_inode_info *i;
 	struct inode *inode = NULL;
@@ -381,22 +377,12 @@ static int fat_fill_inode(struct inode *inode, struct msdos_dir_entry *de)
 	MSDOS_I(inode)->i_attrs = de->attr & ATTR_UNUSED;
 	inode->i_blocks = ((inode->i_size + (sbi->cluster_size - 1))
 			   & ~((loff_t)sbi->cluster_size - 1)) >> 9;
-	inode->i_mtime.tv_sec =
-		date_dos2unix(le16_to_cpu(de->time), le16_to_cpu(de->date),
-			      sbi->options.tz_utc);
-	inode->i_mtime.tv_nsec = 0;
+
+	fat_time_fat2unix(sbi, &inode->i_mtime, de->time, de->date, 0);
 	if (sbi->options.isvfat) {
-		int secs = de->ctime_cs / 100;
-		int csecs = de->ctime_cs % 100;
-		inode->i_ctime.tv_sec  =
-			date_dos2unix(le16_to_cpu(de->ctime),
-				      le16_to_cpu(de->cdate),
-				      sbi->options.tz_utc) + secs;
-		inode->i_ctime.tv_nsec = csecs * 10000000;
-		inode->i_atime.tv_sec =
-			date_dos2unix(0, le16_to_cpu(de->adate),
-				      sbi->options.tz_utc);
-		inode->i_atime.tv_nsec = 0;
+		fat_time_fat2unix(sbi, &inode->i_ctime, de->ctime,
+				  de->cdate, de->ctime_cs);
+		fat_time_fat2unix(sbi, &inode->i_atime, 0, de->adate, 0);
 	} else
 		inode->i_ctime = inode->i_atime = inode->i_mtime;
 
@@ -591,16 +577,14 @@ retry:
 	raw_entry->attr = fat_attr(inode);
 	raw_entry->start = cpu_to_le16(MSDOS_I(inode)->i_logstart);
 	raw_entry->starthi = cpu_to_le16(MSDOS_I(inode)->i_logstart >> 16);
-	fat_date_unix2dos(inode->i_mtime.tv_sec, &raw_entry->time,
-			  &raw_entry->date, sbi->options.tz_utc);
+	fat_time_unix2fat(sbi, &inode->i_mtime, &raw_entry->time,
+			  &raw_entry->date, NULL);
 	if (sbi->options.isvfat) {
 		__le16 atime;
-		fat_date_unix2dos(inode->i_ctime.tv_sec, &raw_entry->ctime,
-				  &raw_entry->cdate, sbi->options.tz_utc);
-		fat_date_unix2dos(inode->i_atime.tv_sec, &atime,
-				  &raw_entry->adate, sbi->options.tz_utc);
-		raw_entry->ctime_cs = (inode->i_ctime.tv_sec & 1) * 100 +
-			inode->i_ctime.tv_nsec / 10000000;
+		fat_time_unix2fat(sbi, &inode->i_ctime, &raw_entry->ctime,
+				  &raw_entry->cdate, &raw_entry->ctime_cs);
+		fat_time_unix2fat(sbi, &inode->i_atime, &atime,
+				  &raw_entry->adate, NULL);
 	}
 	spin_unlock(&sbi->inode_hash_lock);
 	mark_buffer_dirty(bh);