"While the kernel 2.6.23 development cycle has not yet run its course, things are getting close enough to the end that it makes sense to start looking at the overall statistics for this release. As of this writing (shortly after 2.6.23-rc6 came out), just over 6,200 non-merge changesets had been added to the mainline kernel repository. These changesets came from 854 developers--a slightly smaller number than we saw for 2.6.22. Just over 350 of those developers contributed one single changeset.
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"All told, the patches added almost 430,000 lines, but also removed 406,000 lines, meaning that the kernel grew by just under 23,000 lines--a relatively small number..."
