diff options
Diffstat (limited to 'fs/Kconfig')
| -rw-r--r-- | fs/Kconfig | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/Kconfig b/fs/Kconfig index a88aa3af73c1..aa4c12282301 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -201,6 +201,27 @@ config TMPFS_XATTR If unsure, say N. +config TMPFS_INODE64 + bool "Use 64-bit ino_t by default in tmpfs" + depends on TMPFS && 64BIT + default n + help + tmpfs has historically used only inode numbers as wide as an unsigned + int. In some cases this can cause wraparound, potentially resulting + in multiple files with the same inode number on a single device. This + option makes tmpfs use the full width of ino_t by default, without + needing to specify the inode64 option when mounting. + + But if a long-lived tmpfs is to be accessed by 32-bit applications so + ancient that opening a file larger than 2GiB fails with EINVAL, then + the INODE64 config option and inode64 mount option risk operations + failing with EOVERFLOW once 33-bit inode numbers are reached. + + To override this configured default, use the inode32 or inode64 + option when mounting. + + If unsure, say N. + config HUGETLBFS bool "HugeTLB file system support" depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \ |