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| author | Wang Shilong | 2019-04-23 16:58:28 +0200 |
|---|---|---|
| committer | Karel Zak | 2019-04-24 11:08:23 +0200 |
| commit | ce3d198d7c6031ef22bd23c80c24ea5c6ce0f194 (patch) | |
| tree | ac57e6ce9524c817a652bd8648cd4a68fa17479d /sys-utils | |
| parent | tests: fix TS_ENABLE_ASAN usage (diff) | |
| download | kernel-qcow2-util-linux-ce3d198d7c6031ef22bd23c80c24ea5c6ce0f194.tar.gz kernel-qcow2-util-linux-ce3d198d7c6031ef22bd23c80c24ea5c6ce0f194.tar.xz kernel-qcow2-util-linux-ce3d198d7c6031ef22bd23c80c24ea5c6ce0f194.zip | |
fstrim: document kernel return minlen explicitly
Filesystem will modify @minlen according to its
block size etc, and will return actual unit
to userspace, document it into manpage.
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'sys-utils')
| -rw-r--r-- | sys-utils/fstrim.8 | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/sys-utils/fstrim.8 b/sys-utils/fstrim.8 index f7e7aa9ef..c6ecca706 100644 --- a/sys-utils/fstrim.8 +++ b/sys-utils/fstrim.8 @@ -76,10 +76,11 @@ the end of the filesystem. .IP "\fB\-m, \-\-minimum\fP \fIminimum-size\fP" Minimum contiguous free range to discard, in bytes. (This value is internally rounded up to a multiple of the filesystem block size.) Free ranges smaller -than this will be ignored. By increasing this value, the fstrim operation -will complete more quickly for filesystems with badly fragmented freespace, -although not all blocks will be discarded. The default value is zero, -discarding every free block. +than this will be ignored and fstrim will adjust the minimum if it's smaller than +the device's minimum, and report that (fstrim_range.minlen) back to userspace. +By increasing this value, the fstrim operation will complete more quickly for +filesystems with badly fragmented freespace, although not all blocks will be +discarded. The default value is zero, discarding every free block. .IP "\fB\-v, \-\-verbose\fP" Verbose execution. With this option .B fstrim |