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| author |   Frédéric Danis <frederic.danis@collabora.com> | 2022-01-25 18:14:05 +0100 |
|---|---|---|
| committer |   Richard Weinberger <richard@nod.at> | 2022-03-11 10:46:34 +0100 |
| commit | d2a0a616ab2246aab9527eeacf86a033679c8b22 (patch) | |
| tree | f20757bf5efbfacc01c905f417b35fadc9eaf9fe /arch/um/include | |
| parent | um: Migrate vector drivers to NAPI (diff) | |
| download | linux-dev-d2a0a616ab2246aab9527eeacf86a033679c8b22.tar.xz linux-dev-d2a0a616ab2246aab9527eeacf86a033679c8b22.zip | |
um: Fix WRITE_ZEROES in the UBD Driver
Call to fallocate with FALLOC_FL_PUNCH_HOLE on a device backed by a sparse
file can end up by missing data, zeroes data range, if the underlying file
is used with a tool like bmaptool which will referenced only used spaces.
Signed-off-by: Frédéric Danis <frederic.danis@collabora.com>
Acked-by: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/include')
| -rw-r--r-- | arch/um/include/shared/os.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h index 00214059d9ec..fafde1d5416e 100644 --- a/arch/um/include/shared/os.h +++ b/arch/um/include/shared/os.h @@ -168,6 +168,7 @@ extern unsigned os_major(unsigned long long dev); extern unsigned os_minor(unsigned long long dev); extern unsigned long long os_makedev(unsigned major, unsigned minor); extern int os_falloc_punch(int fd, unsigned long long offset, int count); +extern int os_falloc_zeroes(int fd, unsigned long long offset, int count); extern int os_eventfd(unsigned int initval, int flags); extern int os_sendmsg_fds(int fd, const void *buf, unsigned int len, const int *fds, unsigned int fds_num); |