Anisse Astier d86ff3333c efivarfs: expose used and total size ... When writing EFI variables, one might get errors with no other message on why it fails. Being able to see how much is used by EFI variables helps analyzing such issues. Since this is not a conventional filesystem, block size is intentionally set to 1 instead of PAGE_SIZE. x86 quirks of reserved size are taken into account; so that available and free size can be different, further helping debugging space issues. With this patch, one can see the remaining space in EFI variable storage via efivarfs, like this: $ df -h /sys/firmware/efi/efivars/ Filesystem Size Used Avail Use% Mounted on efivarfs 176K 106K 66K 62% /sys/firmware/efi/efivars Signed-off-by: Anisse Astier <an.astier@criteo.com> [ardb: - rename efi_reserved_space() to efivar_reserved_space() - whitespace/coding style tweaks] Signed-off-by: Ard Biesheuvel <ardb@kernel.org>		2023-05-17 18:21:34 +02:00
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file.c	efivars: convert to fileattr	2021-04-12 15:04:29 +02:00
inode.c	fs: port ->fileattr_set() to pass mnt_idmap	2023-01-19 09:24:27 +01:00
internal.h	efi: vars: Move efivar caching layer into efivarfs	2022-06-24 20:40:19 +02:00
Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	efi: vars: Move efivar caching layer into efivarfs	2022-06-24 20:40:19 +02:00
super.c	efivarfs: expose used and total size	2023-05-17 18:21:34 +02:00
vars.c	efi: efivars: Fix variable writes without query_variable_store()	2022-10-21 11:09:40 +02:00