From: Darrick J. Wong <darrick.wong@oracle.com>
To: mfasheh@versity.com, jlbec@evilplan.org
Cc: linux-fsdevel@vger.kernel.org, ocfs2-devel@oss.oracle.com
Subject: [Ocfs2-devel] [PATCH v2 1/6] ocfs2: convert inode refcount test to a helper
Date: Thu, 10 Nov 2016 09:52:17 -0800 [thread overview]
Message-ID: <20161110175217.GC16807@birch.djwong.org> (raw)
In-Reply-To: <147873187285.2820.9992440620792982440.stgit@birch.djwong.org>
Replace the open-coded inode refcount flag test with a helper function
to reduce the potential for bugs.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
fs/ocfs2/alloc.c | 3 +--
fs/ocfs2/file.c | 7 +++----
fs/ocfs2/inode.h | 6 ++++++
fs/ocfs2/move_extents.c | 10 ++--------
fs/ocfs2/refcounttree.c | 22 +++++++++-------------
fs/ocfs2/xattr.c | 4 ++--
6 files changed, 23 insertions(+), 29 deletions(-)
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index f72712f..a0ca49f 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -5713,8 +5713,7 @@ int ocfs2_remove_btree_range(struct inode *inode,
struct ocfs2_refcount_tree *ref_tree = NULL;
if ((flags & OCFS2_EXT_REFCOUNTED) && len) {
- BUG_ON(!(OCFS2_I(inode)->ip_dyn_features &
- OCFS2_HAS_REFCOUNT_FL));
+ BUG_ON(!ocfs2_is_refcount_inode(inode));
if (!refcount_tree_locked) {
ret = ocfs2_lock_refcount_tree(osb, refcount_loc, 1,
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 000c234..d261f3a 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -1030,7 +1030,7 @@ int ocfs2_extend_no_holes(struct inode *inode, struct buffer_head *di_bh,
* Only quota files call this without a bh, and they can't be
* refcounted.
*/
- BUG_ON(!di_bh && (oi->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL));
+ BUG_ON(!di_bh && ocfs2_is_refcount_inode(inode));
BUG_ON(!di_bh && !(oi->ip_flags & OCFS2_INODE_SYSTEM_FILE));
clusters_to_add = ocfs2_clusters_for_bytes(inode->i_sb, new_i_size);
@@ -1719,8 +1719,7 @@ static int ocfs2_remove_inode_range(struct inode *inode,
* within one cluster(means is not exactly aligned to clustersize).
*/
- if (OCFS2_I(inode)->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL) {
-
+ if (ocfs2_is_refcount_inode(inode)) {
ret = ocfs2_cow_file_pos(inode, di_bh, byte_start);
if (ret) {
mlog_errno(ret);
@@ -2036,7 +2035,7 @@ int ocfs2_check_range_for_refcount(struct inode *inode, loff_t pos,
struct super_block *sb = inode->i_sb;
if (!ocfs2_refcount_tree(OCFS2_SB(inode->i_sb)) ||
- !(OCFS2_I(inode)->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL) ||
+ !ocfs2_is_refcount_inode(inode) ||
OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL)
return 0;
diff --git a/fs/ocfs2/inode.h b/fs/ocfs2/inode.h
index 5af68fc..9b955f7 100644
--- a/fs/ocfs2/inode.h
+++ b/fs/ocfs2/inode.h
@@ -181,4 +181,10 @@ static inline struct ocfs2_inode_info *cache_info_to_inode(struct ocfs2_caching_
return container_of(ci, struct ocfs2_inode_info, ip_metadata_cache);
}
+/* Does this inode have the reflink flag set? */
+static inline bool ocfs2_is_refcount_inode(struct inode *inode)
+{
+ return (OCFS2_I(inode)->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL);
+}
+
#endif /* OCFS2_INODE_H */
diff --git a/fs/ocfs2/move_extents.c b/fs/ocfs2/move_extents.c
index 4e8f32eb..e52a285 100644
--- a/fs/ocfs2/move_extents.c
+++ b/fs/ocfs2/move_extents.c
@@ -235,10 +235,7 @@ static int ocfs2_defrag_extent(struct ocfs2_move_extents_context *context,
u64 phys_blkno = ocfs2_clusters_to_blocks(inode->i_sb, phys_cpos);
if ((ext_flags & OCFS2_EXT_REFCOUNTED) && *len) {
-
- BUG_ON(!(OCFS2_I(inode)->ip_dyn_features &
- OCFS2_HAS_REFCOUNT_FL));
-
+ BUG_ON(!ocfs2_is_refcount_inode(inode));
BUG_ON(!context->refcount_loc);
ret = ocfs2_lock_refcount_tree(osb, context->refcount_loc, 1,
@@ -581,10 +578,7 @@ static int ocfs2_move_extent(struct ocfs2_move_extents_context *context,
phys_blkno = ocfs2_clusters_to_blocks(inode->i_sb, phys_cpos);
if ((ext_flags & OCFS2_EXT_REFCOUNTED) && len) {
-
- BUG_ON(!(OCFS2_I(inode)->ip_dyn_features &
- OCFS2_HAS_REFCOUNT_FL));
-
+ BUG_ON(!ocfs2_is_refcount_inode(inode));
BUG_ON(!context->refcount_loc);
ret = ocfs2_lock_refcount_tree(osb, context->refcount_loc, 1,
diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
index 1923851..3410eb1 100644
--- a/fs/ocfs2/refcounttree.c
+++ b/fs/ocfs2/refcounttree.c
@@ -410,7 +410,7 @@ static int ocfs2_get_refcount_block(struct inode *inode, u64 *ref_blkno)
goto out;
}
- BUG_ON(!(OCFS2_I(inode)->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL));
+ BUG_ON(!ocfs2_is_refcount_inode(inode));
di = (struct ocfs2_dinode *)di_bh->b_data;
*ref_blkno = le64_to_cpu(di->i_refcount_loc);
@@ -570,7 +570,7 @@ static int ocfs2_create_refcount_tree(struct inode *inode,
u32 num_got;
u64 suballoc_loc, first_blkno;
- BUG_ON(oi->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL);
+ BUG_ON(ocfs2_is_refcount_inode(inode));
trace_ocfs2_create_refcount_tree(
(unsigned long long)OCFS2_I(inode)->ip_blkno);
@@ -708,7 +708,7 @@ static int ocfs2_set_refcount_tree(struct inode *inode,
struct ocfs2_refcount_block *rb;
struct ocfs2_refcount_tree *ref_tree;
- BUG_ON(oi->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL);
+ BUG_ON(ocfs2_is_refcount_inode(inode));
ret = ocfs2_lock_refcount_tree(osb, refcount_loc, 1,
&ref_tree, &ref_root_bh);
@@ -775,7 +775,7 @@ int ocfs2_remove_refcount_tree(struct inode *inode, struct buffer_head *di_bh)
u64 blk = 0, bg_blkno = 0, ref_blkno = le64_to_cpu(di->i_refcount_loc);
u16 bit = 0;
- if (!(oi->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL))
+ if (!ocfs2_is_refcount_inode(inode))
return 0;
BUG_ON(!ref_blkno);
@@ -2299,11 +2299,10 @@ int ocfs2_decrease_refcount(struct inode *inode,
{
int ret;
u64 ref_blkno;
- struct ocfs2_inode_info *oi = OCFS2_I(inode);
struct buffer_head *ref_root_bh = NULL;
struct ocfs2_refcount_tree *tree;
- BUG_ON(!(oi->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL));
+ BUG_ON(!ocfs2_is_refcount_inode(inode));
ret = ocfs2_get_refcount_block(inode, &ref_blkno);
if (ret) {
@@ -2533,7 +2532,6 @@ int ocfs2_prepare_refcount_change_for_del(struct inode *inode,
int *ref_blocks)
{
int ret;
- struct ocfs2_inode_info *oi = OCFS2_I(inode);
struct buffer_head *ref_root_bh = NULL;
struct ocfs2_refcount_tree *tree;
u64 start_cpos = ocfs2_blocks_to_clusters(inode->i_sb, phys_blkno);
@@ -2544,7 +2542,7 @@ int ocfs2_prepare_refcount_change_for_del(struct inode *inode,
goto out;
}
- BUG_ON(!(oi->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL));
+ BUG_ON(!ocfs2_is_refcount_inode(inode));
ret = ocfs2_get_refcount_tree(OCFS2_SB(inode->i_sb),
refcount_loc, &tree);
@@ -3412,14 +3410,13 @@ static int ocfs2_refcount_cow_hunk(struct inode *inode,
{
int ret;
u32 cow_start = 0, cow_len = 0;
- struct ocfs2_inode_info *oi = OCFS2_I(inode);
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
struct buffer_head *ref_root_bh = NULL;
struct ocfs2_refcount_tree *ref_tree;
struct ocfs2_cow_context *context = NULL;
- BUG_ON(!(oi->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL));
+ BUG_ON(!ocfs2_is_refcount_inode(inode));
ret = ocfs2_refcount_cal_cow_clusters(inode, &di->id2.i_list,
cpos, write_len, max_cpos,
@@ -3629,11 +3626,10 @@ int ocfs2_refcount_cow_xattr(struct inode *inode,
{
int ret;
struct ocfs2_xattr_value_root *xv = vb->vb_xv;
- struct ocfs2_inode_info *oi = OCFS2_I(inode);
struct ocfs2_cow_context *context = NULL;
u32 cow_start, cow_len;
- BUG_ON(!(oi->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL));
+ BUG_ON(!ocfs2_is_refcount_inode(inode));
ret = ocfs2_refcount_cal_cow_clusters(inode, &xv->xr_list,
cpos, write_len, UINT_MAX,
@@ -3807,7 +3803,7 @@ static int ocfs2_attach_refcount_tree(struct inode *inode,
ocfs2_init_dealloc_ctxt(&dealloc);
- if (!(oi->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL)) {
+ if (!ocfs2_is_refcount_inode(inode)) {
ret = ocfs2_create_refcount_tree(inode, di_bh);
if (ret) {
mlog_errno(ret);
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index cb157a3..3c5384d 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -2577,7 +2577,7 @@ int ocfs2_xattr_remove(struct inode *inode, struct buffer_head *di_bh)
if (!(oi->ip_dyn_features & OCFS2_HAS_XATTR_FL))
return 0;
- if (OCFS2_I(inode)->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL) {
+ if (ocfs2_is_refcount_inode(inode)) {
ret = ocfs2_lock_refcount_tree(OCFS2_SB(inode->i_sb),
le64_to_cpu(di->i_refcount_loc),
1, &ref_tree, &ref_root_bh);
@@ -3608,7 +3608,7 @@ int ocfs2_xattr_set(struct inode *inode,
}
/* Check whether the value is refcounted and do some preparation. */
- if (OCFS2_I(inode)->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL &&
+ if (ocfs2_is_refcount_inode(inode) &&
(!xis.not_found || !xbs.not_found)) {
ret = ocfs2_prepare_refcount_xattr(inode, di, &xi,
&xis, &xbs, &ref_tree,
next prev parent reply other threads:[~2016-11-10 17:52 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-09 22:51 [Ocfs2-devel] [PATCH 0/6] ocfs2: wire up {clone, copy, dedupe}_range Darrick J. Wong
2016-11-09 22:51 ` [Ocfs2-devel] [PATCH 1/6] ocfs2: convert inode refcount test to a helper Darrick J. Wong
2016-11-10 2:14 ` Eric Ren
2016-11-10 17:51 ` Darrick J. Wong
2016-11-10 17:52 ` Darrick J. Wong [this message]
2016-11-09 22:51 ` [Ocfs2-devel] [PATCH 2/6] ocfs2: add newlines to some error messages Darrick J. Wong
2016-11-09 22:51 ` [Ocfs2-devel] [PATCH 3/6] ocfs2: prohibit refcounted swapfiles Darrick J. Wong
2016-11-09 22:51 ` [Ocfs2-devel] [PATCH 4/6] ocfs2: budget for extent tree splits when adding refcount flag Darrick J. Wong
2016-11-10 9:20 ` Darwin
2016-11-10 17:11 ` Darrick J. Wong
2016-11-11 3:00 ` Darwin
2016-11-09 22:51 ` [Ocfs2-devel] [PATCH 5/6] ocfs2: don't eat io errors during _dio_end_io_write Darrick J. Wong
2016-11-09 22:51 ` [Ocfs2-devel] [PATCH 6/6] ocfs2: implement the VFS clone_range, copy_range, and dedupe_range features Darrick J. Wong
2016-11-11 5:49 ` Eric Ren
2016-11-11 6:20 ` Darrick J. Wong
2016-11-11 6:45 ` Eric Ren
2016-11-11 9:01 ` Darrick J. Wong
2016-11-11 14:54 ` [Ocfs2-devel] [PATCH v2 " Darrick J. Wong
2016-11-09 23:00 ` [Ocfs2-devel] [PATCH 7/6] xfstests: fix some minor problems testing ocfs2 Darrick J. Wong
2016-11-11 3:15 ` [Ocfs2-devel] [PATCH 0/6] ocfs2: wire up {clone, copy, dedupe}_range Eric Ren
2016-11-11 15:05 ` Darrick J. Wong
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