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

xfs: const-ify xfs_owner_info arguments

Browse Source 
Only certain functions actually change the contents of an
xfs_owner_info; the rest can accept a const struct pointer.  This will
enable us to save stack space by hoisting static owner info types to
be const global variables.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
This commit is contained in:
Darrick J. Wong
2018-12-12 08:46:23 -08:00
parent 02b100fb83
commit 66e3237e72
18 changed files with 266 additions and 261 deletions
Download Patch File Download Diff File Expand all files Collapse all files

68
fs/xfs/libxfs/xfs_alloc.c
View File

@@ -1694,28 +1694,28 @@ error0:
*/
STATIC int
xfs_free_ag_extent(
xfs_trans_t *tp,
xfs_buf_t *agbp,
xfs_agnumber_t agno,
xfs_agblock_t bno,
xfs_extlen_t len,
struct xfs_owner_info *oinfo,
enum xfs_ag_resv_type type)
struct xfs_trans *tp,
struct xfs_buf *agbp,
xfs_agnumber_t agno,
xfs_agblock_t bno,
xfs_extlen_t len,
const struct xfs_owner_info *oinfo,
enum xfs_ag_resv_type type)
{
xfs_btree_cur_t *bno_cur; /* cursor for by-block btree */
xfs_btree_cur_t *cnt_cur; /* cursor for by-size btree */
int error; /* error return value */
xfs_agblock_t gtbno; /* start of right neighbor block */
xfs_extlen_t gtlen; /* length of right neighbor block */
int haveleft; /* have a left neighbor block */
int haveright; /* have a right neighbor block */
int i; /* temp, result code */
xfs_agblock_t ltbno; /* start of left neighbor block */
xfs_extlen_t ltlen; /* length of left neighbor block */
xfs_mount_t *mp; /* mount point struct for filesystem */
xfs_agblock_t nbno; /* new starting block of freespace */
xfs_extlen_t nlen; /* new length of freespace */
xfs_perag_t *pag; /* per allocation group data */
struct xfs_mount *mp;
struct xfs_perag *pag;
struct xfs_btree_cur *bno_cur;
struct xfs_btree_cur *cnt_cur;
xfs_agblock_t gtbno; /* start of right neighbor */
xfs_extlen_t gtlen; /* length of right neighbor */
xfs_agblock_t ltbno; /* start of left neighbor */
xfs_extlen_t ltlen; /* length of left neighbor */
xfs_agblock_t nbno; /* new starting block of freesp */
xfs_extlen_t nlen; /* new length of freespace */
int haveleft; /* have a left neighbor */
int haveright; /* have a right neighbor */
int i;
int error;
bno_cur = cnt_cur = NULL;
mp = tp->t_mountp;
@@ -3008,21 +3008,21 @@ out:
* Just break up the extent address and hand off to xfs_free_ag_extent
* after fixing up the freelist.
*/
int /* error */
int
__xfs_free_extent(
struct xfs_trans *tp, /* transaction pointer */
xfs_fsblock_t bno, /* starting block number of extent */
xfs_extlen_t len, /* length of extent */
struct xfs_owner_info *oinfo, /* extent owner */
enum xfs_ag_resv_type type, /* block reservation type */
bool skip_discard)
struct xfs_trans *tp,
xfs_fsblock_t bno,
xfs_extlen_t len,
const struct xfs_owner_info *oinfo,
enum xfs_ag_resv_type type,
bool skip_discard)
{
struct xfs_mount *mp = tp->t_mountp;
struct xfs_buf *agbp;
xfs_agnumber_t agno = XFS_FSB_TO_AGNO(mp, bno);
xfs_agblock_t agbno = XFS_FSB_TO_AGBNO(mp, bno);
int error;
unsigned int busy_flags = 0;
struct xfs_mount *mp = tp->t_mountp;
struct xfs_buf *agbp;
xfs_agnumber_t agno = XFS_FSB_TO_AGNO(mp, bno);
xfs_agblock_t agbno = XFS_FSB_TO_AGBNO(mp, bno);
int error;
unsigned int busy_flags = 0;
ASSERT(len != 0);
ASSERT(type != XFS_AG_RESV_AGFL);