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Btrfs: mount -o max_inline=size to control the maximum inline extent size

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2008-01-29 16:03:38 -05:00
parent 291d673e6a
commit 6f568d35a0
5 changed files with 22 additions and 3 deletions
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1
fs/btrfs/ctree.h
View file

@ -325,6 +325,7 @@ struct btrfs_fs_info {
u64 last_trans_committed;
unsigned long mount_opt;
u64 max_extent;
u64 max_inline;
u64 alloc_start;
struct btrfs_transaction *running_transaction;
struct btrfs_super_block super_copy;

1
fs/btrfs/disk-io.c
View file

@ -659,6 +659,7 @@ struct btrfs_root *open_ctree(struct super_block *sb)
fs_info->throttles = 0;
fs_info->mount_opt = 0;
fs_info->max_extent = (u64)-1;
fs_info->max_inline = 8192 * 1024;
fs_info->delalloc_bytes = 0;
fs_info->btree_inode = new_inode(sb);
fs_info->btree_inode->i_ino = 1;

1
fs/btrfs/extent_io.c
View file

@ -2451,7 +2451,6 @@ sector_t extent_bmap(struct address_space *mapping, sector_t iblock,
goto out;
sector = (em->block_start + start - em->start) >> inode->i_blkbits;
printk("bmap finds %Lu %Lu block %Lu\n", em->start, em->len, em->block_start);
out:
free_extent_map(em);
return sector;

3
fs/btrfs/file.c
View file

@ -301,7 +301,8 @@ static int noinline dirty_and_release_pages(struct btrfs_trans_handle *trans,
*/
inline_size = end_pos;
if (isize >= BTRFS_MAX_INLINE_DATA_SIZE(root) ||
inline_size > 8192 ||
inline_size > root->fs_info->max_inline ||
(inline_size & (root->sectorsize -1)) == 0 ||
inline_size >= BTRFS_MAX_INLINE_DATA_SIZE(root)) {
u64 last_end;
u64 existing_delalloc = 0;

19
fs/btrfs/super.c
View file

@ -64,7 +64,7 @@ static void btrfs_put_super (struct super_block * sb)
enum {
Opt_subvol, Opt_nodatasum, Opt_nodatacow, Opt_max_extent,
Opt_alloc_start, Opt_nobarrier, Opt_ssd, Opt_err,
Opt_max_inline, Opt_alloc_start, Opt_nobarrier, Opt_ssd, Opt_err,
};
static match_table_t tokens = {
@ -73,6 +73,7 @@ static match_table_t tokens = {
{Opt_nodatacow, "nodatacow"},
{Opt_nobarrier, "nobarrier"},
{Opt_max_extent, "max_extent=%s"},
{Opt_max_inline, "max_inline=%s"},
{Opt_alloc_start, "alloc_start=%s"},
{Opt_ssd, "ssd"},
{Opt_err, NULL}
@ -178,6 +179,22 @@ static int parse_options (char * options,
}
}
break;
case Opt_max_inline:
if (info) {
char *num = match_strdup(&args[0]);
if (num) {
info->max_inline =
btrfs_parse_size(num);
kfree(num);
info->max_inline = max_t(u64,
info->max_inline,
root->sectorsize);
printk("btrfs: max_inline at %Lu\n",
info->max_inline);
}
}
break;
case Opt_alloc_start:
if (info) {
char *num = match_strdup(&args[0]);