diff options
| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2012-05-09 14:33:51 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2012-05-11 13:58:43 +0200 |
| commit | 86ef0df976faf1b060347a07744814458aa42619 (patch) | |
| tree | d001b836005d059b5aa11cf541093f5027c50d28 /testsuites/fstests/configure.ac | |
| parent | libblock: Add RTEMS_BLKIO_PURGEDEV (diff) | |
| download | rtems-86ef0df976faf1b060347a07744814458aa42619.tar.bz2 | |
dosfs: Remove fat_file_datasync()
The fat_file_datasync() read every cluster of the file into the cache
and then synchronized it step-by-step. For unmodified buffers this is a
non-operation. For modified buffers this will wake-up the swapout task
which performs then a single buffer write operation. This is usually
quite inefficient. Firstly we do single buffer writes, secondly we
may perform a lot of unnecessary read operations (for huge files this is
really bad), and thirdly this leads likely to cache evictions.
The synchronization procedure is replaced by a simple
rtems_bdbuf_sync_dev(). This has the side-effect that also buffers not
related to the file are synchronized, but since the modified list is
normally short this should be acceptable.
Diffstat (limited to 'testsuites/fstests/configure.ac')
| -rw-r--r-- | testsuites/fstests/configure.ac | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/testsuites/fstests/configure.ac b/testsuites/fstests/configure.ac index 833a85c21a..ccf9ee0bcf 100644 --- a/testsuites/fstests/configure.ac +++ b/testsuites/fstests/configure.ac @@ -79,6 +79,7 @@ AC_CHECK_SIZEOF([blkcnt_t]) # Explicitly list all Makefiles here AC_CONFIG_FILES([Makefile +fsdosfssync01/Makefile imfs_fserror/Makefile imfs_fslink/Makefile imfs_fspatheval/Makefile |