bcachefs: BCH_IOCTL_DEV_USAGE_V2

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BCH_IOCTL_DEV_USAGE mistakenly put the per-data-type array in struct
bch_ioctl_dev_usage; since ioctl numbers encode the size of the arg,
that means adding new data types breaks the ioctl.

This adds a new version that includes the number of data types as a
parameter: the old version is fixed at 10 so as to not break when adding
new types.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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This commit is contained in:

Kent Overstreet 2023-11-23 19:26:27 -05:00

parent 3b05b8e082

commit e6674decb2

2 changed files with 83 additions and 18 deletions

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17

fs/bcachefs/bcachefs_ioctl.h

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84

fs/bcachefs/chardev.c

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