Gitweb:
https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=56a295f78c4638e201a...
Commit: 56a295f78c4638e201ad78a8b25fd7874f2d905d
Parent: 29db9c6325ac3552b0ba3a0f49682e8e8112cca2
Author: David Teigland <teigland(a)redhat.com>
AuthorDate: Tue Nov 26 15:46:49 2019 -0600
Committer: David Teigland <teigland(a)redhat.com>
CommitterDate: Tue Nov 26 16:52:28 2019 -0600
bcache: add invalidate_bytes function
---
lib/device/bcache-utils.c | 15 +++++++++++++++
lib/device/bcache.h | 1 +
lib/label/label.c | 5 +++++
lib/label/label.h | 1 +
4 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/lib/device/bcache-utils.c b/lib/device/bcache-utils.c
index 2553554..cf74144 100644
--- a/lib/device/bcache-utils.c
+++ b/lib/device/bcache-utils.c
@@ -79,6 +79,21 @@ bool bcache_read_bytes(struct bcache *cache, int fd, uint64_t start,
size_t len,
return true;
}
+bool bcache_invalidate_bytes(struct bcache *cache, int fd, uint64_t start, size_t len)
+{
+ block_address bb, be;
+ bool result = true;
+
+ byte_range_to_block_range(cache, start, len, &bb, &be);
+
+ for (; bb != be; bb++) {
+ if (!bcache_invalidate(cache, fd, bb))
+ result = false;
+ }
+
+ return result;
+}
+
//----------------------------------------------------------------
// Writing bytes and zeroing bytes are very similar, so we factor out
diff --git a/lib/device/bcache.h b/lib/device/bcache.h
index 7622fd3..4ef044c 100644
--- a/lib/device/bcache.h
+++ b/lib/device/bcache.h
@@ -163,6 +163,7 @@ bool bcache_read_bytes(struct bcache *cache, int fd, uint64_t start,
size_t len,
bool bcache_write_bytes(struct bcache *cache, int fd, uint64_t start, size_t len, void
*data);
bool bcache_zero_bytes(struct bcache *cache, int fd, uint64_t start, size_t len);
bool bcache_set_bytes(struct bcache *cache, int fd, uint64_t start, size_t len, uint8_t
val);
+bool bcache_invalidate_bytes(struct bcache *cache, int fd, uint64_t start, size_t len);
void bcache_set_last_byte(struct bcache *cache, int fd, uint64_t offset, int
sector_size);
void bcache_unset_last_byte(struct bcache *cache, int fd);
diff --git a/lib/label/label.c b/lib/label/label.c
index 05986cb..64b7ca0 100644
--- a/lib/label/label.c
+++ b/lib/label/label.c
@@ -1464,6 +1464,11 @@ bool dev_write_bytes(struct device *dev, uint64_t start, size_t
len, void *data)
return true;
}
+bool dev_invalidate_bytes(struct device *dev, uint64_t start, size_t len)
+{
+ return bcache_invalidate_bytes(scan_bcache, dev->bcache_fd, start, len);
+}
+
bool dev_write_zeros(struct device *dev, uint64_t start, size_t len)
{
if (test_mode())
diff --git a/lib/label/label.h b/lib/label/label.h
index f06b7df..33a91fa 100644
--- a/lib/label/label.h
+++ b/lib/label/label.h
@@ -126,6 +126,7 @@ bool dev_read_bytes(struct device *dev, uint64_t start, size_t len,
void *data);
bool dev_write_bytes(struct device *dev, uint64_t start, size_t len, void *data);
bool dev_write_zeros(struct device *dev, uint64_t start, size_t len);
bool dev_set_bytes(struct device *dev, uint64_t start, size_t len, uint8_t val);
+bool dev_invalidate_bytes(struct device *dev, uint64_t start, size_t len);
void dev_set_last_byte(struct device *dev, uint64_t offset);
void dev_unset_last_byte(struct device *dev);