tree 74e9ff872d0cbfe0373c25edb60840d77b06c245
parent 4bdcd1dd4d2f973b1a89fb20ba720d879e9e506b
author Jens Axboe <axboe@kernel.dk> 1635433029 -0600
committer Jens Axboe <axboe@kernel.dk> 1638568289 -0700

block: move direct_IO into our own read_iter handler

Don't call into generic_file_read_iter() if we know it's O_DIRECT, just
set it up ourselves and call our own handler. This avoids an indirect call
for O_DIRECT.

Fall back to filemap_read() if we fail.

Signed-off-by: Jens Axboe <axboe@kernel.dk>