[PATCH v2 0/2] 9pfs: v9fs_reclaim_fd() fixes

[Christian Schoenebeck <qemu_oss@crudebyte.com>]

Three fixes for 9p server's v9fs_reclaim_fd() function:

* Patch 1 fixes a concurrency issue.

* Patch 2 fixes a file descriptor leak and optimizes overall latency. On a test
  machine with ~800,000 FIDs, this reduced execution duration of
  v9fs_reclaim_fd() from 30ms to 1ms.

V2:
  - Patch 2: Decrement global variable total_open_fd on main thread, not
    on fs driver background thread.
  - Patch 2: Update commit log about file descriptor leak being fixed.

Christian Schoenebeck (2):
  9pfs: fix concurrent v9fs_reclaim_fd() calls
  9pfs: fix FD leak and reduce latency of v9fs_reclaim_fd()

 hw/9pfs/9p.c | 39 ++++++++++++++++++++++++++++++---------
 hw/9pfs/9p.h |  1 +
 2 files changed, 31 insertions(+), 9 deletions(-)

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2.39.5