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-rw-r--r--fs/udf/inode.c86
-rw-r--r--fs/udf/super.c11
-rw-r--r--fs/udf/udf_i.h16
-rw-r--r--fs/udf/udf_sb.h5
-rw-r--r--fs/udf/udfdecl.h5
5 files changed, 104 insertions, 19 deletions
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index cbae1ed0b7c..7a12e48ad81 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -67,6 +67,74 @@ static void udf_update_extents(struct inode *,
struct extent_position *);
static int udf_get_block(struct inode *, sector_t, struct buffer_head *, int);
+static void __udf_clear_extent_cache(struct inode *inode)
+{
+ struct udf_inode_info *iinfo = UDF_I(inode);
+
+ if (iinfo->cached_extent.lstart != -1) {
+ brelse(iinfo->cached_extent.epos.bh);
+ iinfo->cached_extent.lstart = -1;
+ }
+}
+
+/* Invalidate extent cache */
+static void udf_clear_extent_cache(struct inode *inode)
+{
+ struct udf_inode_info *iinfo = UDF_I(inode);
+
+ spin_lock(&iinfo->i_extent_cache_lock);
+ __udf_clear_extent_cache(inode);
+ spin_unlock(&iinfo->i_extent_cache_lock);
+}
+
+/* Return contents of extent cache */
+static int udf_read_extent_cache(struct inode *inode, loff_t bcount,
+ loff_t *lbcount, struct extent_position *pos)
+{
+ struct udf_inode_info *iinfo = UDF_I(inode);
+ int ret = 0;
+
+ spin_lock(&iinfo->i_extent_cache_lock);
+ if ((iinfo->cached_extent.lstart <= bcount) &&
+ (iinfo->cached_extent.lstart != -1)) {
+ /* Cache hit */
+ *lbcount = iinfo->cached_extent.lstart;
+ memcpy(pos, &iinfo->cached_extent.epos,
+ sizeof(struct extent_position));
+ if (pos->bh)
+ get_bh(pos->bh);
+ ret = 1;
+ }
+ spin_unlock(&iinfo->i_extent_cache_lock);
+ return ret;
+}
+
+/* Add extent to extent cache */
+static void udf_update_extent_cache(struct inode *inode, loff_t estart,
+ struct extent_position *pos, int next_epos)
+{
+ struct udf_inode_info *iinfo = UDF_I(inode);
+
+ spin_lock(&iinfo->i_extent_cache_lock);
+ /* Invalidate previously cached extent */
+ __udf_clear_extent_cache(inode);
+ if (pos->bh)
+ get_bh(pos->bh);
+ memcpy(&iinfo->cached_extent.epos, pos,
+ sizeof(struct extent_position));
+ iinfo->cached_extent.lstart = estart;
+ if (next_epos)
+ switch (iinfo->i_alloc_type) {
+ case ICBTAG_FLAG_AD_SHORT:
+ iinfo->cached_extent.epos.offset -=
+ sizeof(struct short_ad);
+ break;
+ case ICBTAG_FLAG_AD_LONG:
+ iinfo->cached_extent.epos.offset -=
+ sizeof(struct long_ad);
+ }
+ spin_unlock(&iinfo->i_extent_cache_lock);
+}
void udf_evict_inode(struct inode *inode)
{
@@ -90,6 +158,7 @@ void udf_evict_inode(struct inode *inode)
}
kfree(iinfo->i_ext.i_data);
iinfo->i_ext.i_data = NULL;
+ udf_clear_extent_cache(inode);
if (want_delete) {
udf_free_inode(inode);
}
@@ -105,6 +174,7 @@ static void udf_write_failed(struct address_space *mapping, loff_t to)
truncate_pagecache(inode, to, isize);
if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
down_write(&iinfo->i_data_sem);
+ udf_clear_extent_cache(inode);
udf_truncate_extents(inode);
up_write(&iinfo->i_data_sem);
}
@@ -372,7 +442,7 @@ static int udf_get_block(struct inode *inode, sector_t block,
iinfo->i_next_alloc_goal++;
}
-
+ udf_clear_extent_cache(inode);
phys = inode_getblk(inode, block, &err, &new);
if (!phys)
goto abort;
@@ -1171,6 +1241,7 @@ set_size:
} else {
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
down_write(&iinfo->i_data_sem);
+ udf_clear_extent_cache(inode);
memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr + newsize,
0x00, bsize - newsize -
udf_file_entry_alloc_offset(inode));
@@ -1184,6 +1255,7 @@ set_size:
if (err)
return err;
down_write(&iinfo->i_data_sem);
+ udf_clear_extent_cache(inode);
truncate_setsize(inode, newsize);
udf_truncate_extents(inode);
up_write(&iinfo->i_data_sem);
@@ -2156,11 +2228,12 @@ int8_t inode_bmap(struct inode *inode, sector_t block,
struct udf_inode_info *iinfo;
iinfo = UDF_I(inode);
- pos->offset = 0;
- pos->block = iinfo->i_location;
- pos->bh = NULL;
+ if (!udf_read_extent_cache(inode, bcount, &lbcount, pos)) {
+ pos->offset = 0;
+ pos->block = iinfo->i_location;
+ pos->bh = NULL;
+ }
*elen = 0;
-
do {
etype = udf_next_aext(inode, pos, eloc, elen, 1);
if (etype == -1) {
@@ -2170,7 +2243,8 @@ int8_t inode_bmap(struct inode *inode, sector_t block,
}
lbcount += *elen;
} while (lbcount <= bcount);
-
+ /* update extent cache */
+ udf_update_extent_cache(inode, lbcount - *elen, pos, 1);
*offset = (bcount + *elen - lbcount) >> blocksize_bits;
return etype;
diff --git a/fs/udf/super.c b/fs/udf/super.c
index e9be396a558..bc5b30a819e 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -134,6 +134,8 @@ static struct inode *udf_alloc_inode(struct super_block *sb)
ei->i_next_alloc_goal = 0;
ei->i_strat4096 = 0;
init_rwsem(&ei->i_data_sem);
+ ei->cached_extent.lstart = -1;
+ spin_lock_init(&ei->i_extent_cache_lock);
return &ei->vfs_inode;
}
@@ -1021,7 +1023,6 @@ static struct udf_bitmap *udf_sb_alloc_bitmap(struct super_block *sb, u32 index)
if (bitmap == NULL)
return NULL;
- bitmap->s_block_bitmap = (struct buffer_head **)(bitmap + 1);
bitmap->s_nr_groups = nr_groups;
return bitmap;
}
@@ -1079,8 +1080,6 @@ static int udf_fill_partdesc_info(struct super_block *sb,
if (!bitmap)
return 1;
map->s_uspace.s_bitmap = bitmap;
- bitmap->s_extLength = le32_to_cpu(
- phd->unallocSpaceBitmap.extLength);
bitmap->s_extPosition = le32_to_cpu(
phd->unallocSpaceBitmap.extPosition);
map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_BITMAP;
@@ -1115,8 +1114,6 @@ static int udf_fill_partdesc_info(struct super_block *sb,
if (!bitmap)
return 1;
map->s_fspace.s_bitmap = bitmap;
- bitmap->s_extLength = le32_to_cpu(
- phd->freedSpaceBitmap.extLength);
bitmap->s_extPosition = le32_to_cpu(
phd->freedSpaceBitmap.extPosition);
map->s_partition_flags |= UDF_PART_FLAG_FREED_BITMAP;
@@ -1866,6 +1863,8 @@ static void udf_open_lvid(struct super_block *sb)
mark_buffer_dirty(bh);
sbi->s_lvid_dirty = 0;
mutex_unlock(&sbi->s_alloc_mutex);
+ /* Make opening of filesystem visible on the media immediately */
+ sync_dirty_buffer(bh);
}
static void udf_close_lvid(struct super_block *sb)
@@ -1906,6 +1905,8 @@ static void udf_close_lvid(struct super_block *sb)
mark_buffer_dirty(bh);
sbi->s_lvid_dirty = 0;
mutex_unlock(&sbi->s_alloc_mutex);
+ /* Make closing of filesystem visible on the media immediately */
+ sync_dirty_buffer(bh);
}
u64 lvid_get_unique_id(struct super_block *sb)
diff --git a/fs/udf/udf_i.h b/fs/udf/udf_i.h
index bb8309dcd5c..b5cd8ed2aa1 100644
--- a/fs/udf/udf_i.h
+++ b/fs/udf/udf_i.h
@@ -1,6 +1,19 @@
#ifndef _UDF_I_H
#define _UDF_I_H
+struct extent_position {
+ struct buffer_head *bh;
+ uint32_t offset;
+ struct kernel_lb_addr block;
+};
+
+struct udf_ext_cache {
+ /* Extent position */
+ struct extent_position epos;
+ /* Start logical offset in bytes */
+ loff_t lstart;
+};
+
/*
* The i_data_sem and i_mutex serve for protection of allocation information
* of a regular files and symlinks. This includes all extents belonging to
@@ -35,6 +48,9 @@ struct udf_inode_info {
__u8 *i_data;
} i_ext;
struct rw_semaphore i_data_sem;
+ struct udf_ext_cache cached_extent;
+ /* Spinlock for protecting extent cache */
+ spinlock_t i_extent_cache_lock;
struct inode vfs_inode;
};
diff --git a/fs/udf/udf_sb.h b/fs/udf/udf_sb.h
index 5f027227f08..ed401e94aa8 100644
--- a/fs/udf/udf_sb.h
+++ b/fs/udf/udf_sb.h
@@ -80,10 +80,9 @@ struct udf_virtual_data {
};
struct udf_bitmap {
- __u32 s_extLength;
__u32 s_extPosition;
- __u16 s_nr_groups;
- struct buffer_head **s_block_bitmap;
+ int s_nr_groups;
+ struct buffer_head *s_block_bitmap[0];
};
struct udf_part_map {
diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h
index de038da6f6b..be7dabbbcb4 100644
--- a/fs/udf/udfdecl.h
+++ b/fs/udf/udfdecl.h
@@ -113,11 +113,6 @@ struct ustr {
uint8_t u_len;
};
-struct extent_position {
- struct buffer_head *bh;
- uint32_t offset;
- struct kernel_lb_addr block;
-};
/* super.c */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-10-02 04:32:56 +0000