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Subject[PATCH v4 0/1] dcache: Translating dentry into pathname without taking rename_lock
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Change History

v3->v4:
- Extract the begin and end blocks of the rename_lock sequence number
check into helper functions to make the code easier to read.

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 | 196 ++++++++++++++++++++++++++++++++++++++++-------------------
1 files changed, 133 insertions(+), 63 deletions(-)



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