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    ext4: refactor direct IO code · 914f82a3
    Jan Kara 提交于
    Currently ext4 direct IO handling is split between ext4_ext_direct_IO()
    and ext4_ind_direct_IO(). However the extent based function calls into
    the indirect based one for some cases and for example it is not able to
    handle file extending. Previously it was not also properly handling
    retries in case of ENOSPC errors. With DAX things would get even more
    contrieved so just refactor the direct IO code and instead of indirect /
    extent split do the split to read vs writes.
    Signed-off-by: NJan Kara <jack@suse.cz>
    Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
    914f82a3
ext4.h 118.1 KB