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Documentation: update seq_file

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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>
This commit is contained in:
Dmitry V. Levin 2012-10-17 20:29:22 +04:00 committed by Jonathan Corbet
parent bf5777bcdc
commit 380945365d
1 changed files with 6 additions and 6 deletions
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12
Documentation/filesystems/seq_file.txt
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@ -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);