diff options
author | Theodore Ts'o <tytso@mit.edu> | 2010-06-12 03:14:04 (GMT) |
---|---|---|
committer | Theodore Ts'o <tytso@mit.edu> | 2010-06-12 03:14:04 (GMT) |
commit | a0375156ca1041574b5d47cc7e32f10b891151b0 (patch) | |
tree | b791961012b9348f289c3dda5dc071bdf9b736d2 /fs/pnode.h | |
parent | 7e27d6e778cd87b6f2415515d7127eba53fe5d02 (diff) | |
download | linux-fsl-qoriq-a0375156ca1041574b5d47cc7e32f10b891151b0.tar.xz |
ext4: Clean up s_dirt handling
We don't need to set s_dirt in most of the ext4 code when journaling
is enabled. In ext3/4 some of the summary statistics for # of free
inodes, blocks, and directories are calculated from the per-block
group statistics when the file system is mounted or unmounted. As a
result the superblock doesn't have to be updated, either via the
journal or by setting s_dirt. There are a few exceptions, most
notably when resizing the file system, where the superblock needs to
be modified --- and in that case it should be done as a journalled
operation if possible, and s_dirt set only in no-journal mode.
This patch will optimize out some unneeded disk writes when using ext4
with a journal.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/pnode.h')
0 files changed, 0 insertions, 0 deletions