On 06/29/2011 12:32 PM, Arne Jansen wrote: > Add a READAHEAD extent buffer flag. > Add a function to trigger a read with this flag set. > > Changes v2: > - use extent buffer flags instead of extent state flags > > Signed-off-by: Arne Jansen <[email protected]> > --- > fs/btrfs/disk-io.c | 32 ++++++++++++++++++++++++++++++++ > fs/btrfs/disk-io.h | 2 ++ > fs/btrfs/extent_io.h | 1 + > 3 files changed, 35 insertions(+), 0 deletions(-) > > diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c > index 0339cc0..0195172 100644 > --- a/fs/btrfs/disk-io.c > +++ b/fs/btrfs/disk-io.c > @@ -945,6 +945,38 @@ int readahead_tree_block(struct btrfs_root *root, u64 > bytenr, u32 blocksize, > return ret; > } > > +int reada_tree_block_flagged(struct btrfs_root *root, u64 bytenr, u32 > blocksize, > + int mirror_num, struct extent_buffer **eb) > +{ > + struct extent_buffer *buf = NULL; > + struct inode *btree_inode = root->fs_info->btree_inode; > + struct extent_io_tree *io_tree = &BTRFS_I(btree_inode)->io_tree; > + int ret; > + > + buf = btrfs_find_create_tree_block(root, bytenr, blocksize); > + if (!buf) > + return 0; > + > + set_bit(EXTENT_BUFFER_READAHEAD, &buf->bflags); > + > + ret = read_extent_buffer_pages(io_tree, buf, 0, 0, 1, btree_get_extent, > + mirror_num);
This patch doesn't compile for me, it says there are too many arguments here. [root@destiny btrfs-work]# make M=fs/btrfs CC [M] fs/btrfs/disk-io.o fs/btrfs/disk-io.c: In function ‘reada_tree_block_flagged’: fs/btrfs/disk-io.c:963:6: warning: passing argument 5 of ‘read_extent_buffer_pages’ makes pointer from integer without a cast [enabled by default] fs/btrfs/extent_io.h:244:5: note: expected ‘struct extent_map * (*)(struct inode *, struct page *, size_t, u64, u64, int)’ but argument is of type ‘int’ fs/btrfs/disk-io.c:963:6: warning: passing argument 6 of ‘read_extent_buffer_pages’ makes integer from pointer without a cast [enabled by default] fs/btrfs/extent_io.h:244:5: note: expected ‘int’ but argument is of type ‘struct extent_map * (*)(struct inode *, struct page *, size_t, u64, u64, int)’ fs/btrfs/disk-io.c:963:6: error: too many arguments to function ‘read_extent_buffer_pages’ fs/btrfs/extent_io.h:244:5: note: declared here make[1]: *** [fs/btrfs/disk-io.o] Error 1 make: *** [_module_fs/btrfs] Error 2 Thanks, Josef -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
