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authorChristoph Hellwig <hch@lst.de>2019-04-05 19:08:59 +0300
committerJens Axboe <axboe@kernel.dk>2019-04-06 19:48:35 +0300
commit72deb455b5ec619ff043c30bc90025aa3de3cdda (patch)
tree8c2a77bc41d25181e03da1f04068be12a4c0583c /include/linux/genhd.h
parent75199aa5269f66d0958aa9971fa81a92de83d7f9 (diff)
downloadlinux-72deb455b5ec619ff043c30bc90025aa3de3cdda.tar.xz
block: remove CONFIG_LBDAF
Currently support for 64-bit sector_t and blkcnt_t is optional on 32-bit architectures. These types are required to support block device and/or file sizes larger than 2 TiB, and have generally defaulted to on for a long time. Enabling the option only increases the i386 tinyconfig size by 145 bytes, and many data structures already always use 64-bit values for their in-core and on-disk data structures anyway, so there should not be a large change in dynamic memory usage either. Dropping this option removes a somewhat weird non-default config that has cause various bugs or compiler warnings when actually used. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/genhd.h')
-rw-r--r--include/linux/genhd.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 06c0fd594097..98076b1b5e48 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -714,7 +714,7 @@ static inline void hd_free_part(struct hd_struct *part)
*/
static inline sector_t part_nr_sects_read(struct hd_struct *part)
{
-#if BITS_PER_LONG==32 && defined(CONFIG_LBDAF) && defined(CONFIG_SMP)
+#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
sector_t nr_sects;
unsigned seq;
do {
@@ -722,7 +722,7 @@ static inline sector_t part_nr_sects_read(struct hd_struct *part)
nr_sects = part->nr_sects;
} while (read_seqcount_retry(&part->nr_sects_seq, seq));
return nr_sects;
-#elif BITS_PER_LONG==32 && defined(CONFIG_LBDAF) && defined(CONFIG_PREEMPT)
+#elif BITS_PER_LONG==32 && defined(CONFIG_PREEMPT)
sector_t nr_sects;
preempt_disable();
@@ -741,11 +741,11 @@ static inline sector_t part_nr_sects_read(struct hd_struct *part)
*/
static inline void part_nr_sects_write(struct hd_struct *part, sector_t size)
{
-#if BITS_PER_LONG==32 && defined(CONFIG_LBDAF) && defined(CONFIG_SMP)
+#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
write_seqcount_begin(&part->nr_sects_seq);
part->nr_sects = size;
write_seqcount_end(&part->nr_sects_seq);
-#elif BITS_PER_LONG==32 && defined(CONFIG_LBDAF) && defined(CONFIG_PREEMPT)
+#elif BITS_PER_LONG==32 && defined(CONFIG_PREEMPT)
preempt_disable();
part->nr_sects = size;
preempt_enable();