search for: btrfs_lookup_file_extent

...ruct btrfs_trans_handle *trans, struct btrfs_root *root, - u64 objectid, u64 pos, + struct inode *inode, u64 pos, u64 disk_offset, u64 disk_num_bytes, u64 num_bytes, u64 offset, u64 ram_bytes, u8 compression, u8 encryption, u16 other_encoding); int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, struct btrfs_root *root, - struct btrfs_path *path, u64 objectid, + struct btrfs_path *path, struct inode *inode, u64 bytenr, int mod); int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, struct btrfs_root *root, dif...

...0[<ffffffff812be27d>] ? unlock_up+0x15d/0x190 May 22 09:23:57 bigbox kernel: [56455.5ffff812c31c1>] btrfs_search_slot+0x241/0x720 May 22 09:23:57 bigbox kernel: [56455.5326fff812c3adc>] btrfs_search_slot_for_inode+0x43c/0x910 May 22 09:23:57 bigbox kernel: [56455.532fffffff812d5f04>] btrfs_lookup_file_extent+0x54/0x70 May 22 09:23:57 bigbox kernel: [56455.532646ffff812f097c>] btrfs_drop_extents+0xec/0x940 May 22 09:23:57 bigbox kernel: [56455.532662] fff81084eec>] ? try_to_wake_up+0x1bc/0x2b0 May 22 09:23:57 bigbox kernel: [56455.53268 [<ffffffff812facef>] ? set_state_bits+0x3f/0x80 May 22...

...64 disk_bytenr; + int extent_type; + int ret; + int type; + int nocow; + int check_prev = 1; - total_fs_bytes = btrfs_super_total_bytes(&root->fs_info->super_copy); path = btrfs_alloc_path(); BUG_ON(!path); trans = btrfs_join_transaction(root, 1); BUG_ON(!trans); -again: - ret = btrfs_lookup_file_extent(NULL, root, path, - inode->i_ino, start, 0); - if (ret < 0) { - err = ret; - goto out; - } - - if (ret != 0) { - if (path->slots[0] == 0) - goto not_found; - path->slots[0]--; - } - - leaf = path->nodes[0]; - item = btrfs_item_ptr(leaf, path->slots[0], - st...

...leaf, iref) != BTRFS_EXTENT_DATA_REF_KEY) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 23c596c..0dc5c7d 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -1253,7 +1253,7 @@ static noinline int run_delalloc_nocow(struct inode *inode, cur_offset = start; while (1) { ret = btrfs_lookup_file_extent(trans, root, path, ino, - cur_offset, 0); + cur_offset, 1); if (ret < 0) { btrfs_abort_transaction(trans, root, ret); goto error; -- 1.7.7 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@...

...*leaf; struct btrfs_root *root = BTRFS_I(inode)->root; - struct btrfs_file_extent_item *fi; - struct btrfs_key key; u64 disk_bytenr; u64 backref_offset; u64 extent_end; u64 num_bytes; - int slot; - int found_type; - - path = btrfs_alloc_path(); - if (!path) - return -ENOMEM; - - ret = btrfs_lookup_file_extent(trans, root, path, btrfs_ino(inode), - offset, 0); - if (ret < 0) - goto out; - slot = path->slots[0]; - if (ret == 1) { - if (slot == 0) { - /* can''t find the item, must cow */ - ret = 0; - goto out; - } - slot--; - } - ret = 0; - leaf = path->nodes[0]; - bt...

...localhost kernel: [17117.213753] [<ffffffffa01a30d9>] ? btrfs_cow_block+0x119/0x2b0 [btrfs] May 30 23:25:17 localhost kernel: [17117.213778] [<ffffffffa01a8b5c>] ? btrfs_search_slot+0x1dc/0x9b0 [btrfs] May 30 23:25:17 localhost kernel: [17117.213807] [<ffffffffa01bb493>] ? btrfs_lookup_file_extent+0x33/0x40 [btrfs] May 30 23:25:17 localhost kernel: [17117.213837] [<ffffffffa01d32b0>] ? btrfs_drop_extents+0xc0/0x960 [btrfs] May 30 23:25:17 localhost kernel: [17117.213847] [<ffffffff810096a5>] ? __switch_to+0xc5/0x300 May 30 23:25:17 localhost kernel: [17117.213854] [<f...

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

...= 0; + int del_slot = 0; + int extent_type; int recow; int ret; - inline_limit = 0; if (drop_cache) btrfs_drop_extent_cache(inode, start, end - 1, 0); path = btrfs_alloc_path(); if (!path) return -ENOMEM; + while (1) { recow = 0; - btrfs_release_path(root, path); ret = btrfs_lookup_file_extent(trans, root, path, inode->i_ino, search_start, -1); if (ret < 0) - goto out; - if (ret > 0) { - if (path->slots[0] == 0) { - ret = 0; - goto out; - } - path->slots[0]--; + break; + if (ret > 0 && path->slots[0] > 0 && search_...

...out_unlock; } btrfs_set_trans_block_group(trans, inode); @@ -323,6 +323,10 @@ noinline int btrfs_drop_extents(struct btrfs_trans_handle *trans, while (1) { recow = 0; btrfs_release_path(root, path); + ret = btrfs_extend_transaction(trans, root, 1); + if (ret) + goto out; + ret = btrfs_lookup_file_extent(trans, root, path, inode->i_ino, search_start, -1); if (ret < 0) @@ -1080,6 +1084,10 @@ out_nolock: if ((file->f_flags & O_SYNC) || IS_SYNC(inode)) { trans = btrfs_start_transaction(root, 1); + if (IS_ERR(trans)) { + err = PTR_ERR(trans); + goto fail; +...

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

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