ext4: avoid unneeded ext4_ext_next_leaf_block() while inserting extents
Optimize ext4_ext_insert_extent() by avoiding ext4_ext_next_leaf_block() when the result is not used/needed. Signed-off-by: Robin Dong <sanbai@taobao.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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1 changed files with 4 additions and 3 deletions
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@ -1730,9 +1730,10 @@ int ext4_ext_insert_extent(handle_t *handle, struct inode *inode,
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/* probably next leaf has space for us? */
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fex = EXT_LAST_EXTENT(eh);
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next = ext4_ext_next_leaf_block(inode, path);
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if (le32_to_cpu(newext->ee_block) > le32_to_cpu(fex->ee_block)
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&& next != EXT_MAX_BLOCKS) {
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next = EXT_MAX_BLOCKS;
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if (le32_to_cpu(newext->ee_block) > le32_to_cpu(fex->ee_block))
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next = ext4_ext_next_leaf_block(inode, path);
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if (next != EXT_MAX_BLOCKS) {
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ext_debug("next leaf block - %d\n", next);
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BUG_ON(npath != NULL);
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npath = ext4_ext_find_extent(inode, next, NULL);
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