[PATCH v3 0/1] dcache: Translating dentry into pathname without taking rename_lock

From: Waiman Long
Date: Fri Sep 06 2013 - 12:09:36 EST


Change History

v2->v3:
- Simplify prepend_name() to blindly copy the dname over until it
reaches a null byte or the specified length leaving the sequence
check to handle error case.

v1->v2:
- Check for internal vs external dname, taking d_lock only for
external dname for safety.
- Replace memchr() by a byte-by-byte checking for loop.
- Try lockless dentry to pathname conversion 3 times before falling
back to taking the rename_lock to prevent live-lock.
- Make code re-factoring suggested by George Spelvin.

Waiman Long (1):
dcache: Translating dentry into pathname without taking rename_lock

fs/dcache.c | 178 ++++++++++++++++++++++++++++++++++++++--------------------
1 files changed, 116 insertions(+), 62 deletions(-)

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