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| author | Ferenc Havasi <havasi@inf.u-szeged.hu> | 2005-09-07 09:35:26 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@mtd.linutronix.de> | 2005-11-06 21:29:48 +0100 |
| commit | e631ddba588783edd521c5a89f7b2902772fb691 (patch) | |
| tree | e25f322ee498b344f058ce4a40060baa22a5f105 /fs/jffs2/fs.c | |
| parent | 15017876751e4c2d786ba95920618359fe2b4f0a (diff) | |
| download | linux-e631ddba588783edd521c5a89f7b2902772fb691.tar.gz linux-e631ddba588783edd521c5a89f7b2902772fb691.tar.bz2 linux-e631ddba588783edd521c5a89f7b2902772fb691.zip | |
[JFFS2] Add erase block summary support (mount time improvement)
The goal of summary is to speed up the mount time. Erase block summary (EBS)
stores summary information at the end of every (closed) erase block. It is
no longer necessary to scan all nodes separetly (and read all pages of them)
just read this "small" summary, where every information is stored which is
needed at mount time.
This summary information is stored in a JFFS2_FEATURE_RWCOMPAT_DELETE. During
the mount process if there is no summary info the orignal scan process will
be executed. EBS works with NAND and NOR flashes, too.
There is a user space tool called sumtool to generate this summary
information for a JFFS2 image.
Signed-off-by: Ferenc Havasi <havasi@inf.u-szeged.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'fs/jffs2/fs.c')
| -rw-r--r-- | fs/jffs2/fs.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index c99451ae4b77..c15c30220475 100644 --- a/fs/jffs2/fs.c +++ b/fs/jffs2/fs.c @@ -7,7 +7,7 @@ * * For licensing information, see the file 'LICENCE' in this directory. * - * $Id: fs.c,v 1.64 2005/09/01 08:42:31 havasi Exp $ + * $Id: fs.c,v 1.65 2005/09/07 08:34:54 havasi Exp $ * */ @@ -74,7 +74,8 @@ static int jffs2_do_setattr (struct inode *inode, struct iattr *iattr) return -ENOMEM; } - ret = jffs2_reserve_space(c, sizeof(*ri) + mdatalen, &phys_ofs, &alloclen, ALLOC_NORMAL); + ret = jffs2_reserve_space(c, sizeof(*ri) + mdatalen, &phys_ofs, &alloclen, + ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE); if (ret) { jffs2_free_raw_inode(ri); if (S_ISLNK(inode->i_mode & S_IFMT)) |