• Jan Kara's avatar
    ext4: use io_end for multiple bios · 97a851ed
    Jan Kara authored
    Change writeback path to create just one io_end structure for the
    extent to which we submit IO and share it among bios writing that
    extent. This prevents needless splitting and joining of unwritten
    extents when they cannot be submitted as a single bio.
    
    Bugs in ENOMEM handling found by Linux File System Verification project
    (linuxtesting.org) and fixed by Alexey Khoroshilov
    <khoroshilov@ispras.ru>.
    
    CC: Alexey Khoroshilov <khoroshilov@ispras.ru>
    Signed-off-by: default avatarJan Kara <jack@suse.cz>
    Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
    97a851ed
page-io.c 12.7 KB