During startup, the contents of the data directory are verified to ensure that they have the right owner and permissions. Verifying all the contents, which includes files that will be read and closed immediately, and files that will be held open for longer durations, together, can lead to memory fragementation in the dentry/inode cache.
Mitigate this by updating the verification in a such way that these two set of files will be verified separately ensuring their separation in the dentry/inode cache.
Fixes https://github.com/scylladb/scylladb/issues/14506Closesscylladb/scylladb#16952
* github.com:scylladb/scylladb:
directories: prevent inode cache fragmentation by orderly verifying data directory contents
directories: skip verifying data directory contents during startup
directories: co-routinize create_and_verify
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