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xfs: Allow user to kill fstrim process

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fstrim can take really long time on big, slow device or on file system
with a lots of allocation groups. Currently there is no way for the user
to cancell the operation. This patch makes it possible for the user to
kill fstrim pocess by adding the check for fatal_signal_pending() in
xfs_trim_extents().

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Reported-by: Zdenek Kabelac <zkabelac@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Lukas Czerner 2017-04-27 08:59:36 -07:00 committed by Darrick J. Wong
parent c4cf1acdb1
commit 3c3781951c
1 changed files with 9 additions and 1 deletions
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10
fs/xfs/xfs_discard.c
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@ -132,6 +132,11 @@ xfs_trim_extents(
error = xfs_btree_decrement(cur, 0, &i);
if (error)
goto out_del_cursor;
if (fatal_signal_pending(current)) {
error = -ERESTARTSYS;
goto out_del_cursor;
}
}
out_del_cursor:
@ -196,8 +201,11 @@ xfs_ioc_trim(
for (agno = start_agno; agno <= end_agno; agno++) {
error = xfs_trim_extents(mp, agno, start, end, minlen,
&blocks_trimmed);
if (error)
if (error) {
last_error = error;
if (error == -ERESTARTSYS)
break;
}
}
if (last_error)