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authorArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2012-07-12 18:26:31 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-07-22 23:58:04 +0400
commit9e6c5829b07c9ba6668807631914efc557fab059 (patch)
tree4355c4b76869cf7fba0b2a60066e649e12e7fcc8 /fs/hfsplus/inode.c
parent58770d7e83eede5fafbcdf54a604277d70010705 (diff)
downloadlinux-9e6c5829b07c9ba6668807631914efc557fab059.tar.xz
hfsplus: get rid of write_super
This patch makes hfsplus stop using the VFS '->write_super()' method along with the 's_dirt' superblock flag, because they are on their way out. The whole "superblock write-out" VFS infrastructure is served by the 'sync_supers()' kernel thread, which wakes up every 5 (by default) seconds and writes out all dirty superblocks using the '->write_super()' call-back. But the problem with this thread is that it wastes power by waking up the system every 5 seconds, even if there are no diry superblocks, or there are no client file-systems which would need this (e.g., btrfs does not use '->write_super()'). So we want to kill it completely and thus, we need to make file-systems to stop using the '->write_super()' VFS service, and then remove it together with the kernel thread. Tested using fsstress from the LTP project. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/hfsplus/inode.c')
-rw-r--r--fs/hfsplus/inode.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
index 7009265b746f..3d8b4a675ba0 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -431,7 +431,7 @@ struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode)
sbi->file_count++;
insert_inode_hash(inode);
mark_inode_dirty(inode);
- sb->s_dirt = 1;
+ hfsplus_mark_mdb_dirty(sb);
return inode;
}
@@ -442,7 +442,7 @@ void hfsplus_delete_inode(struct inode *inode)
if (S_ISDIR(inode->i_mode)) {
HFSPLUS_SB(sb)->folder_count--;
- sb->s_dirt = 1;
+ hfsplus_mark_mdb_dirty(sb);
return;
}
HFSPLUS_SB(sb)->file_count--;
@@ -455,7 +455,7 @@ void hfsplus_delete_inode(struct inode *inode)
inode->i_size = 0;
hfsplus_file_truncate(inode);
}
- sb->s_dirt = 1;
+ hfsplus_mark_mdb_dirty(sb);
}
void hfsplus_inode_read_fork(struct inode *inode, struct hfsplus_fork_raw *fork)