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f2fs: avoid latency-critical readahead of node pages
The f2fs_map_blocks is very related to the performance, so let's avoid any latency to read ahead node pages. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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parent
2c237ebaa4
commit
ac6f199984
2 changed files with 2 additions and 2 deletions
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@ -652,7 +652,7 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
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unsigned int maxblocks = map->m_len;
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struct dnode_of_data dn;
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struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
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int mode = create ? ALLOC_NODE : LOOKUP_NODE_RA;
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int mode = create ? ALLOC_NODE : LOOKUP_NODE;
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pgoff_t pgofs, end_offset, end;
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int err = 0, ofs = 1;
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unsigned int ofs_in_node, last_ofs_in_node;
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@ -354,7 +354,7 @@ static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
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for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
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set_new_dnode(&dn, inode, NULL, NULL, 0);
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err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA);
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err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
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if (err && err != -ENOENT) {
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goto fail;
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} else if (err == -ENOENT) {
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