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    Subject[PATCH 4.17 067/336] disable loading f2fs module on PAGE_SIZE > 4KB
    Date
    4.17-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Anatoly Pugachev <matorola@gmail.com>

    [ Upstream commit 4071e67cffcc5c2a007116a02437471351f550eb ]

    The following patch disables loading of f2fs module on architectures
    which have PAGE_SIZE > 4096 , since it is impossible to mount f2fs on
    such architectures , log messages are:

    mount: /mnt: wrong fs type, bad option, bad superblock on
    /dev/vdiskb1, missing codepage or helper program, or other error.
    /dev/vdiskb1: F2FS filesystem,
    UUID=1d8b9ca4-2389-4910-af3b-10998969f09c, volume name ""

    May 15 18:03:13 ttip kernel: F2FS-fs (vdiskb1): Invalid
    page_cache_size (8192), supports only 4KB
    May 15 18:03:13 ttip kernel: F2FS-fs (vdiskb1): Can't find valid F2FS
    filesystem in 1th superblock
    May 15 18:03:13 ttip kernel: F2FS-fs (vdiskb1): Invalid
    page_cache_size (8192), supports only 4KB
    May 15 18:03:13 ttip kernel: F2FS-fs (vdiskb1): Can't find valid F2FS
    filesystem in 2th superblock
    May 15 18:03:13 ttip kernel: F2FS-fs (vdiskb1): Invalid
    page_cache_size (8192), supports only 4KB

    which was introduced by git commit 5c9b469295fb6b10d98923eab5e79c4edb80ed20

    tested on git kernel 4.17.0-rc6-00309-gec30dcf7f425

    with patch applied:

    modprobe: ERROR: could not insert 'f2fs': Invalid argument
    May 28 01:40:28 v215 kernel: F2FS not supported on PAGE_SIZE(8192) != 4096

    Signed-off-by: Anatoly Pugachev <matorola@gmail.com>
    Reviewed-by: Chao Yu <yuchao0@huawei.com>
    Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
    Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    fs/f2fs/super.c | 6 ++++++
    1 file changed, 6 insertions(+)

    --- a/fs/f2fs/super.c
    +++ b/fs/f2fs/super.c
    @@ -3063,6 +3063,12 @@ static int __init init_f2fs_fs(void)
    {
    int err;

    + if (PAGE_SIZE != F2FS_BLKSIZE) {
    + printk("F2FS not supported on PAGE_SIZE(%lu) != %d\n",
    + PAGE_SIZE, F2FS_BLKSIZE);
    + return -EINVAL;
    + }
    +
    f2fs_build_trace_ios();

    err = init_inodecache();

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