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authorAl Viro <viro@zeniv.linux.org.uk>2013-09-03 12:00:44 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2013-09-04 00:13:11 -0400
commit4b6ccca701ef5977d0ffbc2c932430dea88b38b6 (patch)
treef8daa1243e24168fba2595c29805765856708673 /Documentation/printk-formats.txt
parentcffe78d92c217a57f57ec6743f71adfe39ea543e (diff)
downloadkernel-4b6ccca701ef5977d0ffbc2c932430dea88b38b6.tar.gz
add formats for dentry/file pathnames
New formats: %p[dD][234]?. The next pointer is interpreted as struct dentry * or struct file * resp. ('d' => dentry, 'D' => file) and the last component(s) of pathname are printed (%pd => just the last one, %pd2 => the last two, etc.) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'Documentation/printk-formats.txt')
-rw-r--r--Documentation/printk-formats.txt9
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/printk-formats.txt b/Documentation/printk-formats.txt
index 3e8cb73ac43c..9552a3299ec9 100644
--- a/Documentation/printk-formats.txt
+++ b/Documentation/printk-formats.txt
@@ -168,6 +168,15 @@ UUID/GUID addresses:
Where no additional specifiers are used the default little endian
order with lower case hex characters will be printed.
+dentry names:
+ %pd{,2,3,4}
+ %pD{,2,3,4}
+
+ For printing dentry name; if we race with d_move(), the name might be
+ a mix of old and new ones, but it won't oops. %pd dentry is a safer
+ equivalent of %s dentry->d_name.name we used to use, %pd<n> prints
+ n last components. %pD does the same thing for struct file.
+
struct va_format:
%pV