xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

xfs: add bmapi nodiscard flag

Browse Source 
Freed extents are unconditionally discarded when online discard is
enabled. Define XFS_BMAPI_NODISCARD to allow callers to bypass
discards when unnecessary. For example, this will be useful for
eofblocks trimming.

This patch does not change behavior.

Signed-off-by: Brian Foster <bfoster@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:
Brian Foster
2018-05-09 08:45:04 -07:00
committed by Darrick J. Wong
parent e6631f8554
commit fcb762f5de
7 changed files with 87 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
fs/xfs/xfs_trans_extfree.c
View File

@@ -68,7 +68,8 @@ xfs_trans_free_extent(
struct xfs_efd_log_item *efdp,
xfs_fsblock_t start_block,
xfs_extlen_t ext_len,
struct xfs_owner_info *oinfo)
struct xfs_owner_info *oinfo,
bool skip_discard)
{
struct xfs_mount *mp = tp->t_mountp;
uint next_extent;
@@ -79,8 +80,12 @@ xfs_trans_free_extent(
trace_xfs_bmap_free_deferred(tp->t_mountp, agno, 0, agbno, ext_len);
error = xfs_free_extent(tp, start_block, ext_len, oinfo,
XFS_AG_RESV_NONE);
if (skip_discard)
error = xfs_free_extent_nodiscard(tp, start_block, ext_len,
oinfo, XFS_AG_RESV_NONE);
else
error = xfs_free_extent(tp, start_block, ext_len, oinfo,
XFS_AG_RESV_NONE);
/*
* Mark the transaction dirty, even on error. This ensures the
@@ -195,7 +200,7 @@ xfs_extent_free_finish_item(
error = xfs_trans_free_extent(tp, done_item,
free->xefi_startblock,
free->xefi_blockcount,
&free->xefi_oinfo);
&free->xefi_oinfo, free->xefi_skip_discard);
kmem_free(free);
return error;
}