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| author | Artem Bityutskiy <artem.bityutskiy@linux.intel.com> | 2012-07-12 18:26:31 +0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-07-22 23:58:04 +0400 |
| commit | 9e6c5829b07c9ba6668807631914efc557fab059 (patch) | |
| tree | 4355c4b76869cf7fba0b2a60066e649e12e7fcc8 /fs/hfsplus/bitmap.c | |
| parent | 58770d7e83eede5fafbcdf54a604277d70010705 (diff) | |
| download | linux-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/bitmap.c')
| -rw-r--r-- | fs/hfsplus/bitmap.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/hfsplus/bitmap.c b/fs/hfsplus/bitmap.c index 1cad80c789cb..4cfbe2edd296 100644 --- a/fs/hfsplus/bitmap.c +++ b/fs/hfsplus/bitmap.c @@ -153,7 +153,7 @@ done: kunmap(page); *max = offset + (curr - pptr) * 32 + i - start; sbi->free_blocks -= *max; - sb->s_dirt = 1; + hfsplus_mark_mdb_dirty(sb); dprint(DBG_BITMAP, "-> %u,%u\n", start, *max); out: mutex_unlock(&sbi->alloc_mutex); @@ -228,7 +228,7 @@ out: set_page_dirty(page); kunmap(page); sbi->free_blocks += len; - sb->s_dirt = 1; + hfsplus_mark_mdb_dirty(sb); mutex_unlock(&sbi->alloc_mutex); return 0; |