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The right option is 'o' not 'c'. And this tool is used for the block devices
on which there is a btrfs file system, so change "mount_point" to "device".
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
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when no output file is given, info_file stays NULL and the following
fprintf segfaults. Default to stdout.
Signed-off-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
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When building on ppc64 I hit a number of warnings in printf:
btrfs-map-logical.c:69: error: format ‘%Lu’ expects type ‘long long
unsigned int’, but argument 4 has type ‘u64’
Fix them.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
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gcc-4.6 (as shipped in Fedora) turns on -Wunused-but-set-variable by
default, which breaks the build when combined with -Wall, e.g.:
debug-tree.c: In function ‘print_extent_leaf’:
debug-tree.c:45:13: error: variable ‘last_len’ set but not used [-Werror=unused-but-set-variable]
debug-tree.c:44:13: error: variable ‘last’ set but not used [-Werror=unused-but-set-variable]
debug-tree.c:41:21: error: variable ‘item’ set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors
This patch fixes the errors by removing the unused variables.
Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
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This allows us to figure out which physical byte offset on which device
is the real location for a given logical block number. It can
optionally read the block in and save it to a file for debugging
analysis.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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