[PATCHSET 3/9] fuse2fs: clean up operation startup

["Darrick J. Wong" <djwong@kernel.org>]

Hi all,

Reduce the amount of boilerplate in fuse2fs by creating helper functions
to start and finish a file operation instead of open-coding the logic
all over the place.  This also fixes a couple of theoretical races.

If you're going to start using this code, I strongly recommend pulling
from my git trees, which are linked below.

Comments and questions are, as always, welcome.

e2fsprogs git tree:
https://git.kernel.org/cgit/linux/kernel/git/djwong/e2fsprogs.git/log/?h=fuse2fs-refactor-operation-startup
---
Commits in this patchset:
 * fuse2fs: rework FUSE2FS_CHECK_CONTEXT not to rely on global_fs
 * fuse2fs: rework checking file handles
 * fuse2fs: rework fallocate file handle extraction
 * fuse2fs: consolidate file handle checking in op_ioctl
 * fuse2fs: move fs assignment closer to locking the bfl
 * fuse2fs: clean up operation startup
 * fuse2fs: clean up operation completion
 * fuse2fs: clean up more boilerplate
 * fuse2fs: collect runtime of various operations
---
 configure       |   37 ++++
 configure.ac    |   19 ++
 lib/config.h.in |    3 
 misc/fuse2fs.c  |  475 ++++++++++++++++++++++++++++---------------------------
 4 files changed, 303 insertions(+), 231 deletions(-)