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When printing a size_t value we need to use %zu for portability between
32bit and 64bit targets.
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Marek Behun <marek.behun@nic.cz>
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Loading files stored with lzo compression from a btrfs filesystem was
producing unaligned memory accesses, which were causing a data abort
and a reset on an Orange Pi Zero.
The change in hash.c is not triggered by any error but follows the
same pattern. Please confirm.
Fixed according to doc/README.unaligned-memory-access.txt
Signed-off-by: Alberto Sánchez Molero <alsamolero@gmail.com>
Tested-by: Robert Nelson <robertcnelson@gmail.com>
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I accidentaly left a foreign language note in the code from development.
Signed-off-by: Marek Behun <marek.behun@nic.cz>
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The variable res should be initialized to 0 in these functions,
because if the searched key is not found, the variable is used
uninitialized.
Reported-by: Coverity (CID: 167335)
Reported-by: Coverity (CID: 167336)
Reported-by: Coverity (CID: 167337)
Signed-off-by: Marek Behun <marek.behun@nic.cz>
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We specifically say that the last arg is u32, so use %lu.
Signed-off-by: Tom Rini <trini@konsulko.com>
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Signed-off-by: Marek Behun <marek.behun@nic.cz>
create mode 100644 fs/btrfs/Kconfig
create mode 100644 fs/btrfs/Makefile
create mode 100644 fs/btrfs/btrfs.c
create mode 100644 include/btrfs.h
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This adds the proper implementation for the BTRFS filesystem.
The implementation currently supports only read-only mode and
the filesystem can be only on a single device.
Checksums of data chunks is unimplemented.
Compression is implemented (ZLIB + LZO).
Signed-off-by: Marek Behun <marek.behun@nic.cz>
create mode 100644 fs/btrfs/btrfs.h
create mode 100644 fs/btrfs/chunk-map.c
create mode 100644 fs/btrfs/compression.c
create mode 100644 fs/btrfs/ctree.c
create mode 100644 fs/btrfs/dev.c
create mode 100644 fs/btrfs/dir-item.c
create mode 100644 fs/btrfs/extent-io.c
create mode 100644 fs/btrfs/hash.c
create mode 100644 fs/btrfs/inode.c
create mode 100644 fs/btrfs/root.c
create mode 100644 fs/btrfs/subvolume.c
create mode 100644 fs/btrfs/super.c
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BTRFS on disk structures are stored in Little Endian. Add functions
to convert this structures to cpu and to disk format.
On Little Endian hosts, these functions do nothing.
On Big Endian the CALL_MACRO_FROM_EACH from variadic-macro.h is used
to define all the members for each structure on which cpu_to_le* or
le*_to_cpu is to be called.
Signed-off-by: Marek Behun <marek.behun@nic.cz>
create mode 100644 fs/btrfs/conv-funcs.h
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Add btrfs_tree.h and ctree.h from Linux which contains constants
and structures for the BTRFS filesystem.
Signed-off-by: Marek Behun <marek.behun@nic.cz>
create mode 100644 fs/btrfs/btrfs_tree.h
create mode 100644 fs/btrfs/ctree.h
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