Lines Matching full:encoded

887  * Data and metadata for an encoded read or write.
889  * Encoded I/O bypasses any encoding automatically done by the filesystem (e.g.,
894  * preadv/pwritev with additional metadata about how the data is encoded and the
897  * BTRFS_IOC_ENCODED_READ fills the given iovecs with the encoded data, fills
898  * the metadata fields, and returns the size of the encoded data. It reads one
899  * extent per call. It can also read data which is not encoded.
901  * BTRFS_IOC_ENCODED_WRITE uses the metadata fields, writes the encoded data
902  * from the iovecs, and returns the size of the encoded data. Note that the
903  * encoded data is not validated when it is written; if it is not valid (e.g.,
906  * Since the filesystem page cache contains decoded data, encoded I/O bypasses
907  * the page cache. Encoded I/O requires CAP_SYS_ADMIN.
913 	 * iovecs containing encoded data.
915 	 * For reads, if the size of the encoded data is larger than the sum of
919 	 * For writes, the size of the encoded data is the sum of iov[n].iov_len
938 	 * contain the returned metadata for the encoded data.
940 	 * encoded data.