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[PATCH] fat: move fat_clusters_flush() to write_super()

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It is overkill to update the FS_INFO whenever modifying
prev_free/free_clusters, because those are just a hint.

So, this patch uses ->write_super() for updating FS_INFO instead.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
OGAWA Hirofumi 2006-01-08 01:02:08 -08:00 committed by Linus Torvalds
parent 9ded96f24c
commit a6bf6b211c
3 changed files with 14 additions and 6 deletions
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8
fs/fat/fatent.c
View File

@ -476,6 +476,7 @@ int fat_alloc_clusters(struct inode *inode, int *cluster, int nr_cluster)
sbi->prev_free = entry;
if (sbi->free_clusters != -1)
sbi->free_clusters--;
sb->s_dirt = 1;
cluster[idx_clus] = entry;
idx_clus++;
@ -496,6 +497,7 @@ int fat_alloc_clusters(struct inode *inode, int *cluster, int nr_cluster)
/* Couldn't allocate the free entries */
sbi->free_clusters = 0;
sb->s_dirt = 1;
err = -ENOSPC;
out:
@ -509,7 +511,6 @@ int fat_alloc_clusters(struct inode *inode, int *cluster, int nr_cluster)
}
for (i = 0; i < nr_bhs; i++)
brelse(bhs[i]);
fat_clusters_flush(sb);
if (err && idx_clus)
fat_free_clusters(inode, cluster[0]);
@ -542,8 +543,10 @@ int fat_free_clusters(struct inode *inode, int cluster)
}
ops->ent_put(&fatent, FAT_ENT_FREE);
if (sbi->free_clusters != -1)
if (sbi->free_clusters != -1) {
sbi->free_clusters++;
sb->s_dirt = 1;
}
if (nr_bhs + fatent.nr_bhs > MAX_BUF_PER_PAGE) {
if (sb->s_flags & MS_SYNCHRONOUS) {
@ -605,6 +608,7 @@ int fat_count_free_clusters(struct super_block *sb)
} while (fat_ent_next(sbi, &fatent));
}
sbi->free_clusters = free;
sb->s_dirt = 1;
fatent_brelse(&fatent);
out:
unlock_fat(sbi);

10
fs/fat/inode.c
View File

@ -374,12 +374,17 @@ static void fat_clear_inode(struct inode *inode)
unlock_kernel();
}
static void fat_put_super(struct super_block *sb)
static void fat_write_super(struct super_block *sb)
{
struct msdos_sb_info *sbi = MSDOS_SB(sb);
sb->s_dirt = 0;
if (!(sb->s_flags & MS_RDONLY))
fat_clusters_flush(sb);
}
static void fat_put_super(struct super_block *sb)
{
struct msdos_sb_info *sbi = MSDOS_SB(sb);
if (sbi->nls_disk) {
unload_nls(sbi->nls_disk);
@ -546,6 +551,7 @@ static struct super_operations fat_sops = {
.write_inode = fat_write_inode,
.delete_inode = fat_delete_inode,
.put_super = fat_put_super,
.write_super = fat_write_super,
.statfs = fat_statfs,
.clear_inode = fat_clear_inode,
.remount_fs = fat_remount,

2
fs/fat/misc.c
View File

@ -67,8 +67,6 @@ void fat_clusters_flush(struct super_block *sb)
if (sbi->prev_free != -1)
fsinfo->next_cluster = cpu_to_le32(sbi->prev_free);
mark_buffer_dirty(bh);
if (sb->s_flags & MS_SYNCHRONOUS)
sync_dirty_buffer(bh);
}
brelse(bh);
}