[PATCH] fadvise: return ESPIPE on FIFO/pipe
The patch makes posix_fadvise return ESPIPE on FIFO/pipe in order to be
fully POSIX-compliant.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/mm/fadvise.c b/mm/fadvise.c
index 5f19e87..d257c89 100644
--- a/mm/fadvise.c
+++ b/mm/fadvise.c
@@ -37,6 +37,11 @@
if (!file)
return -EBADF;
+ if (S_ISFIFO(file->f_dentry->d_inode->i_mode)) {
+ ret = -ESPIPE;
+ goto out;
+ }
+
mapping = file->f_mapping;
if (!mapping || len < 0) {
ret = -EINVAL;