| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Fri, 1 May 2020 11:59:52 +0530
From: Ritesh Harjani <riteshh@...ux.ibm.com>
To: linux-ext4@...r.kernel.org
Cc: "Paul E . McKenney" <paulmck@...nel.org>,
linux-fsdevel@...r.kernel.org, Jan Kara <jack@...e.com>,
tytso@....edu, "Aneesh Kumar K . V" <aneesh.kumar@...ux.ibm.com>,
Ritesh Harjani <riteshh@...ux.ibm.com>
Subject: [RFC 10/20] ext4: mballoc: Remove EXT4_MB_HINT_GOAL_ONLY and it's related code
We don't set EXT4_MB_HINT_GOAL_ONLY flag at any place and from our last
during discussion, we don't see a need/use case of it anytime in near
future too.
So just kill the flag and all of it's references.
This also adjusts the remaining ac_flags macro values accordingly.
Signed-off-by: Ritesh Harjani <riteshh@...ux.ibm.com>
---
fs/ext4/ext4.h | 12 +++++-------
fs/ext4/mballoc.c | 10 ----------
include/trace/events/ext4.h | 1 -
3 files changed, 5 insertions(+), 18 deletions(-)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 91eb4381cae5..db4fb62c1169 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -130,18 +130,16 @@ enum SHIFT_DIRECTION {
#define EXT4_MB_HINT_NOPREALLOC 0x0040
/* allocate for locality group */
#define EXT4_MB_HINT_GROUP_ALLOC 0x0080
-/* allocate goal blocks or none */
-#define EXT4_MB_HINT_GOAL_ONLY 0x0100
/* goal is meaningful */
-#define EXT4_MB_HINT_TRY_GOAL 0x0200
+#define EXT4_MB_HINT_TRY_GOAL 0x0100
/* blocks already pre-reserved by delayed allocation */
-#define EXT4_MB_DELALLOC_RESERVED 0x0400
+#define EXT4_MB_DELALLOC_RESERVED 0x0200
/* We are doing stream allocation */
-#define EXT4_MB_STREAM_ALLOC 0x0800
+#define EXT4_MB_STREAM_ALLOC 0x0400
/* Use reserved root blocks if needed */
-#define EXT4_MB_USE_ROOT_BLOCKS 0x1000
+#define EXT4_MB_USE_ROOT_BLOCKS 0x0800
/* Use blocks from reserved pool */
-#define EXT4_MB_USE_RESERVED 0x2000
+#define EXT4_MB_USE_RESERVED 0x1000
struct ext4_allocation_request {
/* target inode for block we're allocating */
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 6e7232fd109e..4d6effe22652 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2157,9 +2157,6 @@ ext4_mb_regular_allocator(struct ext4_allocation_context *ac)
if (err || ac->ac_status == AC_STATUS_FOUND)
goto out;
- if (unlikely(ac->ac_flags & EXT4_MB_HINT_GOAL_ONLY))
- goto out;
-
/*
* ac->ac2_order is set only if the fe_len is a power of 2
* if ac2_order is set we also set criteria to 0 so that we
@@ -3139,10 +3136,6 @@ ext4_mb_normalize_request(struct ext4_allocation_context *ac,
if (!(ac->ac_flags & EXT4_MB_HINT_DATA))
return;
- /* sometime caller may want exact blocks */
- if (unlikely(ac->ac_flags & EXT4_MB_HINT_GOAL_ONLY))
- return;
-
/* caller may indicate that preallocation isn't
* required (it's a tail, for example) */
if (ac->ac_flags & EXT4_MB_HINT_NOPREALLOC)
@@ -4257,9 +4250,6 @@ static void ext4_mb_group_or_file(struct ext4_allocation_context *ac)
if (!(ac->ac_flags & EXT4_MB_HINT_DATA))
return;
- if (unlikely(ac->ac_flags & EXT4_MB_HINT_GOAL_ONLY))
- return;
-
size = ac->ac_o_ex.fe_logical + EXT4_C2B(sbi, ac->ac_o_ex.fe_len);
isize = (i_size_read(ac->ac_inode) + ac->ac_sb->s_blocksize - 1)
>> bsbits;
diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h
index 19c87661eeec..a2a603172f57 100644
--- a/include/trace/events/ext4.h
+++ b/include/trace/events/ext4.h
@@ -30,7 +30,6 @@ struct partial_cluster;
{ EXT4_MB_HINT_DATA, "HINT_DATA" }, \
{ EXT4_MB_HINT_NOPREALLOC, "HINT_NOPREALLOC" }, \
{ EXT4_MB_HINT_GROUP_ALLOC, "HINT_GRP_ALLOC" }, \
- { EXT4_MB_HINT_GOAL_ONLY, "HINT_GOAL_ONLY" }, \
{ EXT4_MB_HINT_TRY_GOAL, "HINT_TRY_GOAL" }, \
{ EXT4_MB_DELALLOC_RESERVED, "DELALLOC_RESV" }, \
{ EXT4_MB_STREAM_ALLOC, "STREAM_ALLOC" }, \
--
2.21.0
Powered by blists - more mailing lists