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authorMikulas Patocka <mpatocka@redhat.com>2020-06-02 16:34:40 +0300
committerMike Snitzer <snitzer@redhat.com>2020-06-05 21:59:41 +0300
commit33a180623b6c35f2727daecb63763955af3af1df (patch)
treedf17dbb862aee516cf07560d58b2175c95339306 /include/linux/dm-bufio.h
parent88f878e58879acfdad03e08776c9802f9cd6f26a (diff)
downloadlinux-33a180623b6c35f2727daecb63763955af3af1df.tar.xz
dm bufio: introduce forget_buffer_locked
Introduce a function forget_buffer_locked that forgets a range of buffers. It is more efficient than calling forget_buffer in a loop. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'include/linux/dm-bufio.h')
-rw-r--r--include/linux/dm-bufio.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/dm-bufio.h b/include/linux/dm-bufio.h
index 5ec6bfbde9ae..29d255fdd5d6 100644
--- a/include/linux/dm-bufio.h
+++ b/include/linux/dm-bufio.h
@@ -137,6 +137,13 @@ void dm_bufio_release_move(struct dm_buffer *b, sector_t new_block);
void dm_bufio_forget(struct dm_bufio_client *c, sector_t block);
/*
+ * Free the given range of buffers.
+ * This is just a hint, if the buffer is in use or dirty, this function
+ * does nothing.
+ */
+void dm_bufio_forget_buffers(struct dm_bufio_client *c, sector_t block, sector_t n_blocks);
+
+/*
* Set the minimum number of buffers before cleanup happens.
*/
void dm_bufio_set_minimum_buffers(struct dm_bufio_client *c, unsigned n);