search for: btrfs_file_extent_reg

...[compressed1][ regular ][ hole but no extent] + * + * [81920-86016] + * [ regular ] + */ +static void setup_file_extents(struct btrfs_root *root) +{ + int slot = 0; + u64 disk_bytenr = 1 * 1024 * 1024; + u64 offset = 0; + + /* First we want a hole */ + insert_extent(root, offset, 5, 5, 0, 0, 0, BTRFS_FILE_EXTENT_REG, 0, + slot); + slot++; + offset += 5; + + /* + * Now we want an inline extent, I don''t think this is possible but hey + * why not? Also keep in mind if we have an inline extent it counts as + * the whole first page. If we were to expand it we would have to cow + * and we would...

...ound_type = btrfs_file_extent_type(leaf, extent); - compression = btrfs_file_extent_compression(leaf, - extent); - encryption = btrfs_file_extent_encryption(leaf, - extent); - other_encoding = btrfs_file_extent_other_encoding(leaf, - extent); - if (found_type == BTRFS_FILE_EXTENT_REG || - found_type == BTRFS_FILE_EXTENT_PREALLOC) { - extent_end = - btrfs_file_extent_disk_bytenr(leaf, - extent); - if (extent_end) - *hint_byte = extent_end; - - extent_end = key.offset + - btrfs_file_extent_num_bytes(leaf, extent); - ram_bytes = btrf...

...uct btrfs_file_extent_item *fi, - u64 disk_bytenr) + u64 disk_bytenr, u8 compress) { if (btrfs_file_extent_disk_bytenr(leaf, fi) != disk_bytenr) return 0; @@ -2237,8 +2237,10 @@ static int relink_is_mergable(struct extent_buffer *leaf, if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_REG) return 0; - if (btrfs_file_extent_compression(leaf, fi) || - btrfs_file_extent_encryption(leaf, fi) || + if (btrfs_file_extent_compression(leaf, fi) != compress) + return 0; + + if (btrfs_file_extent_encryption(leaf, fi) || btrfs_file_extent_other_encoding(leaf, fi)) return 0;...

...tem found, the extent is referenced by other snapshot */ - ret = btrfs_search_slot(NULL, old_root, key, path, 0, 0); - if (ret) - goto out; - - eb = path->nodes[0]; - item = btrfs_item_ptr(eb, path->slots[0], - struct btrfs_file_extent_item); - if (btrfs_file_extent_type(eb, item) != BTRFS_FILE_EXTENT_REG || - btrfs_file_extent_disk_bytenr(eb, item) != bytenr) { - ret = 1; - goto out; - } - - for (level = BTRFS_MAX_LEVEL - 1; level >= -1; level--) { - if (level >= 0) { - eb = path->nodes[level]; - if (!eb) - continue; - extent_start = eb->start; - } else - extent_start...

...sertion(+), 1 deletion(-) diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index 849b729..1134aa4 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -3373,7 +3373,7 @@ static int log_one_extent(struct btrfs_trans_handle *trans, btrfs_set_token_file_extent_type(leaf, fi, BTRFS_FILE_EXTENT_REG, &token); - if (em->block_start == 0) + if (em->block_start == EXTENT_MAP_HOLE) skip_csum = true; } -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info...

...k(const char *devname, int { int fd; int ret; + int i; struct btrfs_root *root; struct btrfs_root *ext2_root; struct btrfs_root *chunk_root; @@ -2654,6 +2677,10 @@ int do_rollback(const char *devname, int struct btrfs_file_extent_item); if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_REG) break; + if (btrfs_file_extent_compression(leaf, fi) || + btrfs_file_extent_encryption(leaf, fi) || + btrfs_file_extent_other_encoding(leaf, fi)) + break; bytenr = btrfs_file_extent_disk_bytenr(leaf, fi); /* skip holes and direct mapped extents */ @@ -2750,6 +2777,15 @@ ne...

...ino) + break; + + if (btrfs_key_type(&key) == BTRFS_EXTENT_DATA_KEY) { + struct btrfs_file_extent_item *extent; + int type; + u64 datal = 0; + + extent = btrfs_item_ptr(leaf, slot, + struct btrfs_file_extent_item); + type = btrfs_file_extent_type(leaf, extent); + if (type == BTRFS_FILE_EXTENT_REG) { + datal = btrfs_file_extent_num_bytes(leaf, + extent); + compressed_size += + btrfs_file_extent_disk_num_bytes(leaf, + extent); + } else if (type == BTRFS_FILE_EXTENT_INLINE) { + datal = btrfs_file_extent_ram_bytes(leaf, + extent); + compressed_...

...DATA_KEY) { - /* not our file or wrong item type, must cow */ - goto out; - } - - if (key.offset > offset) { - /* Wrong offset, must cow */ - goto out; - } - - fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item); - found_type = btrfs_file_extent_type(leaf, fi); - if (found_type != BTRFS_FILE_EXTENT_REG && - found_type != BTRFS_FILE_EXTENT_PREALLOC) { - /* not a regular extent, must cow */ - goto out; - } - disk_bytenr = btrfs_file_extent_disk_bytenr(leaf, fi); - backref_offset = btrfs_file_extent_offset(leaf, fi); + if (em->block_start == EXTENT_MAP_INLINE || + em->block_s...

...ree_root); ret = insert_reserved_file_extent(trans, inode, ordered_extent->file_offset, ordered_extent->start, ordered_extent->disk_len, - ordered_extent->len, - ordered_extent->len, + logical_len, logical_len, compress_type, 0, 0, BTRFS_FILE_EXTENT_REG); } @@ -2667,17 +2676,27 @@ out: if (trans) btrfs_end_transaction(trans, root); - if (ret) { - clear_extent_uptodate(io_tree, ordered_extent->file_offset, - ordered_extent->file_offset + - ordered_extent->len - 1, NULL, GFP_NOFS); + if (ret || truncated) { + u6...

Just a quick update, I''ve dropped the hashing stuff in favor of doing a memcmp in the kernel to make sure the data is still the same. The thing that takes a while is reading the data up from disk, so doing a memcmp of the entire buffer isn''t that big of a deal, not to mention there''s a possiblity for malicious users if there is a problem with the hashing algorithms we

.../tree-log.c +++ b/fs/btrfs/tree-log.c @@ -589,7 +589,8 @@ static noinline int replay_one_extent(struct btrfs_trans_handle *trans, /* drop any overlapping extents */ ret = btrfs_drop_extents(trans, root, inode, start, extent_end, 1); - BUG_ON(ret); + if (ret) + goto out; if (found_type == BTRFS_FILE_EXTENT_REG || found_type == BTRFS_FILE_EXTENT_PREALLOC) { @@ -599,7 +600,8 @@ static noinline int replay_one_extent(struct btrfs_trans_handle *trans, ret = btrfs_insert_empty_item(trans, root, path, key, sizeof(*item)); - BUG_ON(ret); + if (ret) + goto out; dest_offset = btrfs_it...

We''re going to use this flag EXTENT_DEFRAG to indicate which range belongs to defragment so that we can implement snapshow-aware defrag: We set the EXTENT_DEFRAG flag when dirtying the extents that need defragmented, so later on writeback thread can differentiate between normal writeback and writeback started by defragmentation. This patch is used for the latter one. Originally patch

I''ve been working to try to improve the write-ahead log''s performance, and I found that the bottleneck addresses in the checksum items, especially when we want to make a random write on a large file, e.g a 4G file. Then a idea for this suggested by Chris is to use sub transaction ids and just to log the part of inode that had changed since either the last log commit or the last

...| + btrfs_key_type(&key) != BTRFS_EXTENT_DATA_KEY) + break; + + fi = btrfs_item_ptr(leaf, path.slots[0], + struct btrfs_file_extent_item); + if (btrfs_file_extent_generation(leaf, fi) > last_trans) { + modified = 1; + break; + } + if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_REG) + break; + + if (offset >= first_free) + goto next; + + bytenr = btrfs_file_extent_disk_bytenr(leaf, fi); + if (bytenr == 0) + break; + bytenr += btrfs_file_extent_offset(leaf, fi); + num_bytes = btrfs_file_extent_num_bytes(leaf, fi); + if (num_bytes > first_free - offset) + nu...

...jectid != ino) { + ret = -EINVAL; + break; + } + + if (key.type != BTRFS_EXTENT_DATA_KEY) { + ret = -EINVAL; + break; + } + + fi = btrfs_item_ptr(path->nodes[0], path->slots[0], + struct btrfs_file_extent_item); + if (btrfs_file_extent_type(path->nodes[0], fi) != + BTRFS_FILE_EXTENT_REG) { + printf("Not the file extent type we wanted\n"); + ret = -EINVAL; + break; + } + + bytenr = btrfs_file_extent_disk_bytenr(leaf, fi) + + btrfs_file_extent_offset(leaf, fi); + len = btrfs_file_extent_num_bytes(leaf, fi); + ret = read_data_from_disk(root->fs_info, +...

Hi, The following patches add support for ext4 and btrfs to PV-GRUB. These patches are taken nearly verbatim from those provided by Fedora and Gentoo. We''ve been using these patches for the PV-GRUB images available in EC2 for some time now with no problems. Changes from v1: - Makefile has been changed to check the exit code from patch - The btrfs patch has been rebased to apply

Hello, This patch series adds an initial implementation of restriper (it''s a clever name for relocation framework that allows to do selective profile changing and selective balancing with some goodies like pausing/resuming and reporting progress to the user. Profile changing is global (per-FS) so far, per-subvolume profiles require some discussion and can be implemented in future.

V1->V2: Check to see if our current ppos is >= i_size after a short DIO read, just in case it was actually a short read and we need to just return. This is similar to what already happens in the write case. If we have a short read while doing O_DIRECT, instead of just returning, fallthrough and try to read the rest via buffered IO. BTRFS needs this because if we encounter a compressed or

...{ return ret; @@ -548,7 +548,7 @@ static noinline int replay_one_extent(struct btrfs_trans_handle *trans, /* drop any overlapping extents */ ret = btrfs_drop_extents(trans, inode, start, extent_end, &alloc_hint, 1); - BUG_ON(ret); + btrfs_fixable_bug_on(ret); if (found_type == BTRFS_FILE_EXTENT_REG || found_type == BTRFS_FILE_EXTENT_PREALLOC) { @@ -558,7 +558,7 @@ static noinline int replay_one_extent(struct btrfs_trans_handle *trans, ret = btrfs_insert_empty_item(trans, root, path, key, sizeof(*item)); - BUG_ON(ret); + btrfs_fixable_bug_on(ret); dest_offset = btrf...

Here are patches to do offline deduplication for Btrfs. It works well for the cases it''s expected to, I''m looking for feedback on the ioctl interface and such, I''m well aware there are missing features for the userspace app (like being able to set a different blocksize). If this interface is acceptable I will flesh out the userspace app a little more, but I believe the