diff options
-rw-r--r-- | sys-utils/fallocate.1 | 6 | ||||
-rw-r--r-- | sys-utils/fallocate.c | 3 |
2 files changed, 9 insertions, 0 deletions
diff --git a/sys-utils/fallocate.1 b/sys-utils/fallocate.1 index d4821dcd1..fe5072ae8 100644 --- a/sys-utils/fallocate.1 +++ b/sys-utils/fallocate.1 @@ -72,6 +72,12 @@ The option may not be specified for the collapse-range operation. .sp Available since Linux 3.15 for ext4 (only for extent-based files) and XFS. +.sp +A filesystem may place limitations on the granularity of the operation, in +order to ensure efficient implementation. Typically, offset and len must be a +multiple of the filesystem logical block size, which varies according to the +filesystem type and configuration. If a filesystem has such a requirement, +the operation will fail with the error EINVAL if this requirement is violated. .TP .BR \-d ", " \-\-dig\-holes Detect and dig holes. diff --git a/sys-utils/fallocate.c b/sys-utils/fallocate.c index c6bed63ef..c97e63d4b 100644 --- a/sys-utils/fallocate.c +++ b/sys-utils/fallocate.c @@ -121,6 +121,9 @@ static loff_t cvtnum(char *s) static void xfallocate(int fd, int mode, off_t offset, off_t length) { int error; + +fprintf(stderr, "KZAK>>> %d\n", mode); + #ifdef HAVE_FALLOCATE error = fallocate(fd, mode, offset, length); #else |