• Hugh Dickins's avatar
    tmpfs: remove_shmem_readpage · 9276aad6
    Hugh Dickins authored
    Remove that pernicious shmem_readpage() at last: the things we needed it
    for (splice, loop, sendfile, i915 GEM) are now fully taken care of by
    shmem_file_splice_read() and shmem_read_mapping_page_gfp().
    This removal clears the way for a simpler shmem_getpage_gfp(), since page
    is never passed in; but leave most of that cleanup until after.
    sys_readahead() and sys_fadvise(POSIX_FADV_WILLNEED) will now EINVAL,
    instead of unexpectedly trying to read ahead on tmpfs: if that proves to
    be an issue for someone, then we can either arrange for them to return
    success instead, or try to implement async readahead on tmpfs.
    Signed-off-by: default avatarHugh Dickins <hughd@google.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
shmem.c 80.2 KB