diff options
| author | Carlos Maiolino <cem@kernel.org> | 2023-07-25 16:45:07 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2023-08-09 09:15:39 +0200 |
| commit | eafc474e202978ac735c551d5ee1eb8c02e2be54 (patch) | |
| tree | 567514c47c5b202dcf8ff9735015ac31e730a98e /include/linux | |
| parent | 86be6b8bd834bece87e6adc5313cb41e1ba7fe81 (diff) | |
shmem: prepare shmem quota infrastructure
Add new shmem quota format, its quota_format_ops together with
dquot_operations
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Message-Id: <20230725144510.253763-5-cem@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/shmem_fs.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h index 9029abd29b1c..7abfaf70b58a 100644 --- a/include/linux/shmem_fs.h +++ b/include/linux/shmem_fs.h @@ -13,6 +13,10 @@ /* inode in-kernel data */ +#ifdef CONFIG_TMPFS_QUOTA +#define SHMEM_MAXQUOTAS 2 +#endif + struct shmem_inode_info { spinlock_t lock; unsigned int seals; /* shmem seals */ @@ -172,4 +176,12 @@ extern int shmem_mfill_atomic_pte(pmd_t *dst_pmd, #endif /* CONFIG_SHMEM */ #endif /* CONFIG_USERFAULTFD */ +/* + * Used space is stored as unsigned 64-bit value in bytes but + * quota core supports only signed 64-bit values so use that + * as a limit + */ +#define SHMEM_QUOTA_MAX_SPC_LIMIT 0x7fffffffffffffffLL /* 2^63-1 */ +#define SHMEM_QUOTA_MAX_INO_LIMIT 0x7fffffffffffffffLL + #endif |