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authorDmitry V. Levin <ldv@altlinux.org>2012-10-17 20:29:22 +0400
committerJonathan Corbet <corbet@lwn.net>2014-12-29 15:40:18 -0700
commit380945365d3824e7c62deb17930453acdcb65eaa (patch)
treedc4994d817881bb1fba5f5a3677576b001fcd856 /Documentation/filesystems
parentbf5777bcdc540661f2f5d531a13e4e9c9fb7ee22 (diff)
Documentation: update seq_file
Update descriptions of seq_path() and seq_path_root(): starting with commit v3.2-rc4-1-g02125a8, seq_path_root() no longer changes the value of root; starting with commit v3.2-rc7-104-g8c9379e, some arguments of seq_path() and seq_path_root() are const. Signed-off-by: Dmitry V. Levin <ldv@altlinux.org> Acked-by: Rob Landley <rob@landley.net> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/filesystems')
-rw-r--r--Documentation/filesystems/seq_file.txt12
1 files changed, 6 insertions, 6 deletions
diff --git a/Documentation/filesystems/seq_file.txt b/Documentation/filesystems/seq_file.txt
index b797ed38de46..9de4303201e1 100644
--- a/Documentation/filesystems/seq_file.txt
+++ b/Documentation/filesystems/seq_file.txt
@@ -194,16 +194,16 @@ which is in the string esc will be represented in octal form in the output.
There are also a pair of functions for printing filenames:
- int seq_path(struct seq_file *m, struct path *path, char *esc);
- int seq_path_root(struct seq_file *m, struct path *path,
- struct path *root, char *esc)
+ int seq_path(struct seq_file *m, const struct path *path,
+ const char *esc);
+ int seq_path_root(struct seq_file *m, const struct path *path,
+ const struct path *root, const char *esc)
Here, path indicates the file of interest, and esc is a set of characters
which should be escaped in the output. A call to seq_path() will output
the path relative to the current process's filesystem root. If a different
-root is desired, it can be used with seq_path_root(). Note that, if it
-turns out that path cannot be reached from root, the value of root will be
-changed in seq_file_root() to a root which *does* work.
+root is desired, it can be used with seq_path_root(). If it turns out that
+path cannot be reached from root, seq_path_root() returns SEQ_SKIP.
A function producing complicated output may want to check
bool seq_has_overflowed(struct seq_file *m);