From: Artem Bityutskiy <Artem.Bityutskiy@xxxxxxxxx>
We cannot store bit-fields together if the processes which
change them may race, unless we serialize them.
Thus, move the nospc and nospc_rp bit-fields eway from
the mount option/constant bit-fields, to avoid races.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@xxxxxxxxx>
---
fs/ubifs/ubifs.h | 17 +++++++++--------
1 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index 542cbaf..c3ac5a8 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -334,7 +334,7 @@ struct ubifs_gced_idx_leb {
* @bulk_read: non-zero if bulk-read should be used
* @ui_mutex: serializes inode write-back with the rest of VFS operations,
* serializes "clean <-> dirty" state changes, serializes bulk-read,
- * protects @dirty, @ui_size, and @xattr_size
+ * protects @dirty, @bulk_read, @ui_size, and @xattr_size
* @ui_lock: protects @synced_i_size
* @synced_i_size: synchronized size of inode, i.e. the value of inode size
* currently stored on the flash; used only for regular file
@@ -944,10 +944,6 @@ struct ubifs_mount_opts {
* @fast_unmount: do not run journal commit before un-mounting
* @big_lpt: flag that LPT is too big to write whole during commit
* @check_lpt_free: flag that indicates LPT GC may be needed
- * @nospace: non-zero if the file-system does not have flash space (used as
- * optimization)
- * @nospace_rp: the same as @nospace, but additionally means that even reserved
- * pool is full
* @no_chk_data_crc: do not check CRCs when reading data nodes (except during
* recovery)
* @bulk_read: enable bulk-reads
@@ -1017,12 +1013,17 @@ struct ubifs_mount_opts {
* but which still have to be taken into account because
* the index has not been committed so far
* @space_lock: protects @budg_idx_growth, @budg_data_growth, @budg_dd_growth,
- * @budg_uncommited_idx, @min_idx_lebs, @old_idx_sz, and @lst;
+ * @budg_uncommited_idx, @min_idx_lebs, @old_idx_sz, @lst,
+ * @nospace, and @nospace_rp;
* @min_idx_lebs: minimum number of LEBs required for the index
* @old_idx_sz: size of index on flash
* @calc_idx_sz: temporary variable which is used to calculate new index size
* (contains accurate new index size at end of TNC commit start)
* @lst: lprops statistics
+ * @nospace: non-zero if the file-system does not have flash space (used as
+ * optimization)
+ * @nospace_rp: the same as @nospace, but additionally means that even reserved
+ * pool is full
*
* @page_budget: budget for a page
* @inode_budget: budget for an inode
@@ -1191,8 +1192,6 @@ struct ubifs_info {
unsigned int fast_unmount:1;
unsigned int big_lpt:1;
unsigned int check_lpt_free:1;
- unsigned int nospace:1;
- unsigned int nospace_rp:1;
unsigned int no_chk_data_crc:1;
unsigned int bulk_read:1;
@@ -1263,6 +1262,8 @@ struct ubifs_info {
unsigned long long old_idx_sz;
unsigned long long calc_idx_sz;
struct ubifs_lp_stats lst;
+ unsigned int nospace:1;
+ unsigned int nospace_rp:1;
int page_budget;
int inode_budget;
--
1.5.4.1
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
