[JFFS2] Use ALLOC_DELETION priority for truncation to zero length
This is going to obsolete all previous nodes, so treat it as deletion. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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@ -36,6 +36,7 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
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unsigned int ivalid;
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uint32_t alloclen;
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int ret;
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int alloc_type = ALLOC_NORMAL;
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D1(printk(KERN_DEBUG "jffs2_setattr(): ino #%lu\n", inode->i_ino));
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@ -115,6 +116,10 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
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ri->compr = JFFS2_COMPR_ZERO;
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ri->dsize = cpu_to_je32(iattr->ia_size - inode->i_size);
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ri->offset = cpu_to_je32(inode->i_size);
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} else if (ivalid & ATTR_SIZE && !iattr->ia_size) {
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/* For truncate-to-zero, treat it as deletion because
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it'll always be obsoleting all previous nodes */
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alloc_type = ALLOC_DELETION;
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}
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ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
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if (mdatalen)
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@ -122,7 +127,7 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
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else
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ri->data_crc = cpu_to_je32(0);
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new_metadata = jffs2_write_dnode(c, f, ri, mdata, mdatalen, ALLOC_NORMAL);
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new_metadata = jffs2_write_dnode(c, f, ri, mdata, mdatalen, alloc_type);
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if (S_ISLNK(inode->i_mode))
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kfree(mdata);
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