[CHANGELOG] v3: - Fix an error that we always return 0 actread bytes for unsupported fses For unsupported fses, we should also populate @total_read. Or we will just read the data but still return 0 for actually bytes.
Now it pass all test_fs* cases. v2 - Fix a linkage error where (U64 % U32) is called without proper helper Fix it with U64 & (U32 - 1), as the U32 value (@blocksize) should always be power of 2, thus (@blocksize - 1) is the mask we want to calculate the offset inside the block. Above change only affects the 4th patch, everything else is not touched. RFC->v1: - More (manual) testing Unfortunately, in the latest master (75967970850a), the fs-tests.sh always seems to hang at preparing the fs image. Thus still has to do manual testing, tested btrfs, ext4 and fat, with aligned and unaligned read, also added soft link read, all looks fine here. Extra testing is still appreciated. - Two more btrfs specific bug fixes All exposed during manual tests - Remove the tailing unaligned block handling In fact, all fses can easily handle such case, just a min() call is enough. - Remove the support for sandboxfs Since it's using read() calls, really no need to do block alignment check. - Enhanced blocksize check Ensure the returned blocksize is not only non-error, but also non-zero. Qu Wenruo (8): fs: fat: unexport file_fat_read_at() fs: btrfs: fix a bug which no data get read if the length is not 0 fs: btrfs: fix a crash if specified range is beyond file size fs: btrfs: move the unaligned read code to _fs_read() for btrfs fs: ext4: rely on _fs_read() to handle leading unaligned block read fs: fat: rely on higher layer to get block aligned read range fs: ubifs: rely on higher layer to do unaligned read fs: erofs: add unaligned read range handling fs/btrfs/btrfs.c | 33 ++++++++--- fs/btrfs/inode.c | 89 +++-------------------------- fs/erofs/internal.h | 1 + fs/erofs/super.c | 6 ++ fs/ext4/ext4fs.c | 22 +++++++ fs/fat/fat.c | 17 +++++- fs/fs.c | 130 +++++++++++++++++++++++++++++++++++++++--- fs/ubifs/ubifs.c | 13 +++-- include/btrfs.h | 1 + include/erofs.h | 1 + include/ext4fs.h | 1 + include/fat.h | 3 +- include/ubifs_uboot.h | 1 + 13 files changed, 212 insertions(+), 106 deletions(-) -- 2.37.1
