vfs: make d_path() get the root path under RCU

Browse source

This avoids the spinlocks and refcounts in the d_path() sequence too
(used by /proc and various other entities).  See commit 8b19e34188 for
the equivalent getcwd() system call path.

And unlike getcwd(), d_path() doesn't copy the result to user space, so
I don't need to fear _that_ particular bug happening again.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

...

This commit is contained in:

Linus Torvalds 2013-09-12 13:24:55 -07:00

parent 3272c544da

commit 68f0d9d92e

1 changed files with 14 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

16

fs/dcache.c

View file