bcachefs: prt_bitflags_vector()

similar to prt_bitflags(), but for ulong arrays

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

diff --git a/fs/bcachefs/printbuf.c b/fs/bcachefs/printbuf.c
index 5e653eb81d54f8fdfcca37038eeaf5a1febdb8e7..accf246c32330919869bccff32a1ecfcc6d97856 100644 (file)
--- a/fs/bcachefs/printbuf.c
+++ b/fs/bcachefs/printbuf.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: LGPL-2.1+
 /* Copyright (C) 2022 Kent Overstreet */
 
+#include <linux/bitmap.h>
 #include <linux/err.h>
 #include <linux/export.h>
 #include <linux/kernel.h>
@@ -423,3 +424,24 @@ void bch2_prt_bitflags(struct printbuf *out,
                flags ^= BIT_ULL(bit);
        }
 }
+
+void bch2_prt_bitflags_vector(struct printbuf *out,
+                             const char * const list[],
+                             unsigned long *v, unsigned nr)
+{
+       bool first = true;
+       unsigned i;
+
+       for (i = 0; i < nr; i++)
+               if (!list[i]) {
+                       nr = i - 1;
+                       break;
+               }
+
+       for_each_set_bit(i, v, nr) {
+               if (!first)
+                       bch2_prt_printf(out, ",");
+               first = false;
+               bch2_prt_printf(out, "%s", list[i]);
+       }
+}

diff --git a/fs/bcachefs/printbuf.h b/fs/bcachefs/printbuf.h
index 2191423d9f22895f9943b80c2134f150eeb26fad..9a4a56c409371570e26b1279850322ce1f2f3820 100644 (file)
--- a/fs/bcachefs/printbuf.h
+++ b/fs/bcachefs/printbuf.h
@@ -124,6 +124,8 @@ void bch2_prt_units_u64(struct printbuf *, u64);
 void bch2_prt_units_s64(struct printbuf *, s64);
 void bch2_prt_string_option(struct printbuf *, const char * const[], size_t);
 void bch2_prt_bitflags(struct printbuf *, const char * const[], u64);
+void bch2_prt_bitflags_vector(struct printbuf *, const char * const[],
+                             unsigned long *, unsigned);
 
 /* Initializer for a heap allocated printbuf: */
 #define PRINTBUF ((struct printbuf) { .heap_allocated = true })

diff --git a/fs/bcachefs/util.h b/fs/bcachefs/util.h
index 2984b57b29584f1e4009fea7b88c6115de3d6389..b701f7fe0784ef37b39302f245f8e3880a95d331 100644 (file)
--- a/fs/bcachefs/util.h
+++ b/fs/bcachefs/util.h
@@ -243,6 +243,7 @@ do {                                                                        \
 #define prt_units_s64(...)             bch2_prt_units_s64(__VA_ARGS__)
 #define prt_string_option(...)         bch2_prt_string_option(__VA_ARGS__)
 #define prt_bitflags(...)              bch2_prt_bitflags(__VA_ARGS__)
+#define prt_bitflags_vector(...)       bch2_prt_bitflags_vector(__VA_ARGS__)
 
 void bch2_pr_time_units(struct printbuf *, u64);
 void bch2_prt_datetime(struct printbuf *, time64_t);