lkml.org 
[lkml]   [2008]   [Sep]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Subject[PATCH] block: Introduce integrity data ownership flag
From
Date

A filesystem might supply its own integrity metadata. Introduce a
flag that indicates whether the filesystem or the block layer owns the
integrity buffer.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---
fs/bio-integrity.c | 3 ++-
include/linux/bio.h | 1 +
2 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c
index c3e174b..8e409ff 100644
--- a/fs/bio-integrity.c
+++ b/fs/bio-integrity.c
@@ -107,7 +107,8 @@ void bio_integrity_free(struct bio *bio, struct bio_set *bs)
BUG_ON(bip == NULL);

/* A cloned bio doesn't own the integrity metadata */
- if (!bio_flagged(bio, BIO_CLONED) && bip->bip_buf != NULL)
+ if (!bio_flagged(bio, BIO_CLONED) && !bio_flagged(bio, BIO_FS_INTEGRITY)
+ && bip->bip_buf != NULL)
kfree(bip->bip_buf);

mempool_free(bip->bip_vec, bs->bvec_pools[bip->bip_pool]);
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 6520ee1..6aba97d 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -109,6 +109,7 @@ struct bio {
#define BIO_EOPNOTSUPP 7 /* not supported */
#define BIO_CPU_AFFINE 8 /* complete bio on same CPU as submitted */
#define BIO_NULL_MAPPED 9 /* contains invalid user pages */
+#define BIO_FS_INTEGRITY 10 /* fs owns integrity data, not block layer */
#define bio_flagged(bio, flag) ((bio)->bi_flags & (1 << (flag)))

/*
--
1.5.5.1


\
 
 \ /
  Last update: 2008-09-21 02:13    [W:0.019 / U:3.440 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site