f2fs: fix accessing wrong indexed data blocks
This patch fixes the following test. This causes: attempt to access beyond end of device sdb2: rw=16384, want=14413962000, limit=16777216 The reason is: - f2fs_write_begin - f2fs_convert_inline_inode returns -ENOSPC - f2fs_write_failed - truncate_blocks - truncate_partial_data_page - find_data_page - get_dnode_of_data returns wrong data index retrieved from inline_data - f2fs_submit_page_bio(wrong data index) - submit_bio(wrong data index) Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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@ -474,7 +474,7 @@ int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode)
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{
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struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
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struct page *npage[4];
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struct page *parent;
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struct page *parent = NULL;
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int offset[4];
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unsigned int noffset[4];
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nid_t nids[4];
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@ -491,6 +491,14 @@ int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode)
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if (IS_ERR(npage[0]))
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return PTR_ERR(npage[0]);
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}
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/* if inline_data is set, should not report any block indices */
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if (f2fs_has_inline_data(dn->inode) && index) {
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err = -EINVAL;
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f2fs_put_page(npage[0], 1);
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goto release_out;
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}
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parent = npage[0];
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if (level != 0)
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nids[1] = get_nid(parent, offset[0], true);
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