On 29.06.2011 20:13, Josef Bacik wrote:
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<sensille@xxxxxxx> --- 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.
Ok, commit d1310b2e0cd98eb134 changed a lot here, I'll take a lot how to rebase this and send a v4. Thanks, Arne
[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
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