kerneltrap

3 ms·

1. 1.▲
   by kerneltrap 5y ago

   https://git.kernel.dk/cgit/fio/tree/t/io_uring.c
2. 2.▲
   by kerneltrap 5y ago

   Not necessarily, while reflink works only within the boundaries of the same filesystem there are other optimizations that can operate across filesystems (even networked ones). For example copy_file_range() [1] allows for copy offloading (de
3. 3.▲
   by kerneltrap 5y ago

   The fastest `cp` is actually doing no data copies at all (relying on copy-on-write), on filesystems with reflink support. Incidentally, coreutils v9.0 cp switched to doing reflinks by default [1], so there's already a faster cp. [1] h
4. 4.▲
   by kerneltrap 6y ago

   Your first point is the correct one. Basically the offset passed to bdev_write_page() was wrong, and has been like that since it was introduced to swap code back in v3.16. In practice this means that the same filesystem corruption could hap