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linux/arch/um/os-Linux
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Anton Ivanov 54ebe4060f um: Use fdatasync() when mapping the UBD FSYNC command 
We do not need to update the metadata (atime, mtime, etc)
on the UBD file and/or the COW file until UML exits.

UBD image mtime is checked in UML only when opening
the files. After that they are locked and used
exclusively by a single UML instance, so there is
no point wasting resources on updating metadata on
every sync. We can sync data only. The host will
always update mtime if a file has been modified upon
closing it.

Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2020-06-02 22:37:55 +02:00
..
drivers um: Add SPDX headers for files in arch/um/os-Linux 2019-09-15 21:37:17 +02:00
skas um: Add SPDX headers for files in arch/um/os-Linux 2019-09-15 21:37:17 +02:00
elf_aux.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
execvp.c um: Use os_warn to print out pre-boot warning/error messages 2017-07-05 23:18:25 +02:00
file.c um: Use fdatasync() when mapping the UBD FSYNC command 2020-06-02 22:37:55 +02:00
helper.c um: Add SPDX headers for files in arch/um/os-Linux 2019-09-15 21:37:17 +02:00
irq.c um: Add SPDX headers for files in arch/um/os-Linux 2019-09-15 21:37:17 +02:00
main.c um: Don't trace irqflags during shutdown 2019-11-25 22:42:57 +01:00
Makefile um: Add SPDX headers for files in arch/um/os-Linux 2019-09-15 21:37:17 +02:00
mem.c um: Add SPDX headers for files in arch/um/os-Linux 2019-09-15 21:37:17 +02:00
process.c um: Add SPDX headers for files in arch/um/os-Linux 2019-09-15 21:37:17 +02:00
registers.c um: Add SPDX headers for files in arch/um/os-Linux 2019-09-15 21:37:17 +02:00
sigio.c um: Add SPDX headers for files in arch/um/os-Linux 2019-09-15 21:37:17 +02:00
signal.c um: Add SPDX headers for files in arch/um/os-Linux 2019-09-15 21:37:17 +02:00
start_up.c um: Add SPDX headers for files in arch/um/os-Linux 2019-09-15 21:37:17 +02:00
time.c um: Move timer-internal.h to non-shared 2020-03-29 23:28:43 +02:00
tty.c um: Add SPDX headers for files in arch/um/os-Linux 2019-09-15 21:37:17 +02:00
umid.c um: Fix len of file in create_pid_file 2020-03-29 23:20:07 +02:00
user_syms.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
util.c um: Add SPDX headers for files in arch/um/os-Linux 2019-09-15 21:37:17 +02:00