forked from Minki/linux
ext4: Don't update ctime for non-extent-mapped inodes
The VFS handles updating ctime, so we don't need to update the inode's ctime in ext4_splace_branch() to update the direct or indirect blocks. This was harmless when we did this in ext3, but in ext4, thanks to delayed allocation, updating the ctime in ext4_splice_branch() can cause the ctime to mysteriously jump when the blocks are finally allocated. Thanks to Björn Steinbrink for pointing out this problem on the git mailing list. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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@ -856,10 +856,6 @@ static int ext4_splice_branch(handle_t *handle, struct inode *inode,
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}
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/* We are done with atomic stuff, now do the rest of housekeeping */
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inode->i_ctime = ext4_current_time(inode);
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ext4_mark_inode_dirty(handle, inode);
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/* had we spliced it onto indirect block? */
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if (where->bh) {
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/*
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@ -878,8 +874,8 @@ static int ext4_splice_branch(handle_t *handle, struct inode *inode,
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} else {
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/*
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* OK, we spliced it into the inode itself on a direct block.
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* Inode was dirtied above.
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*/
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ext4_mark_inode_dirty(handle, inode);
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jbd_debug(5, "splicing direct\n");
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}
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return err;
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