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| author | plougher <plougher> | 2008-10-11 10:32:05 +0000 |
|---|---|---|
| committer | Mohamad Ayyash <mkayyash@google.com> | 2015-02-23 12:34:05 -0800 |
| commit | a60610a9e9d656f73c09ed3679ec8f3c0ef3a31f (patch) | |
| tree | b6e396499b0a2ce3fdc9f39686ffcabaf51fa0fc /kernel | |
| parent | 4ceab5157ba306b0fe767d646dd13ab7848b07d0 (diff) | |
| download | squashfs-tools-a60610a9e9d656f73c09ed3679ec8f3c0ef3a31f.tar.gz | |
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Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/fs/squashfs/id.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/fs/squashfs/id.c b/kernel/fs/squashfs/id.c index 252cc52..9107c14 100644 --- a/kernel/fs/squashfs/id.c +++ b/kernel/fs/squashfs/id.c @@ -21,6 +21,16 @@ * id.c */ +/* + * This file implements code to handle uids and gids. + * + * For space efficiency regular files store uid and gid indexes, which are + * converted to 32-bit uids/gids using an id look up table. This table is + * stored compressed into metadata blocks. A second index table is used to + * locate these. This index table for speed of access (and because it is + * small) is read at mount time and cached in memory. + */ + #include <linux/fs.h> #include <linux/vfs.h> #include <linux/slab.h> |