diff options
| author | Darrick J. Wong <darrick.wong@oracle.com> | 2020-02-19 17:01:39 -0800 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2020-06-01 21:16:29 -0700 |
| commit | bc693f273d2c57a5ae6428370b03ba4bba4bf6e1 (patch) | |
| tree | e805501186d9b82096f5e4ccdf1348398fef1027 | |
| parent | 2a54c9567404e5b660f36cde5c68d18990e71a69 (diff) | |
xfs: drop the _safe behavior from the xbitmap foreach macro
It's not safe to edit bitmap intervals while we're iterating them with
for_each_xbitmap_extent. None of the existing callers actually need
that ability anyway, so drop the safe variable.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
| -rw-r--r-- | fs/xfs/scrub/bitmap.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/fs/xfs/scrub/bitmap.c b/fs/xfs/scrub/bitmap.c index e198983db610..7a7554fb2793 100644 --- a/fs/xfs/scrub/bitmap.c +++ b/fs/xfs/scrub/bitmap.c @@ -12,8 +12,9 @@ #include "xfs_btree.h" #include "scrub/bitmap.h" -#define for_each_xbitmap_extent(bex, n, bitmap) \ - list_for_each_entry_safe((bex), (n), &(bitmap)->list, list) +/* Iterate each interval of a bitmap. Do not change the bitmap. */ +#define for_each_xbitmap_extent(bex, bitmap) \ + list_for_each_entry((bex), &(bitmap)->list, list) /* * Set a range of this bitmap. Caller must ensure the range is not set. @@ -45,10 +46,9 @@ void xbitmap_destroy( struct xbitmap *bitmap) { - struct xbitmap_range *bmr; - struct xbitmap_range *n; + struct xbitmap_range *bmr, *n; - for_each_xbitmap_extent(bmr, n, bitmap) { + list_for_each_entry_safe(bmr, n, &bitmap->list, list) { list_del(&bmr->list); kmem_free(bmr); } @@ -307,10 +307,9 @@ xbitmap_hweight( struct xbitmap *bitmap) { struct xbitmap_range *bmr; - struct xbitmap_range *n; uint64_t ret = 0; - for_each_xbitmap_extent(bmr, n, bitmap) + for_each_xbitmap_extent(bmr, bitmap) ret += bmr->len; return ret; @@ -323,10 +322,10 @@ xbitmap_walk( xbitmap_walk_fn fn, void *priv) { - struct xbitmap_range *bex, *n; + struct xbitmap_range *bex; int error; - for_each_xbitmap_extent(bex, n, bitmap) { + for_each_xbitmap_extent(bex, bitmap) { error = fn(bex->start, bex->len, priv); if (error) break; |