Hi all,
In this patch set, punching hole feature is improved. The improvements are as
below.
- add block-based file punching hole support
- add tracepoint in punching hole
In patch 1, it introduces punching hole feature for block-based file.
In patch 2, we check FALLOC_FL_PUNCH_HOLE flag firstly in ext4_fallocate to
fully enable punching hole feature for extent-based file and block-based file.
In patch 3, a tracepoint is added in ext4_punch_hole.
Any comments or feedbacks are appreciated. Thanks!
v2 <- v1:
* Rework patch 1. Now it looks very simple and straightforward.
BTW, after applying this patch set, xfstest #255 will not pass w/o extent
because block-based file doesn't support unwritten extents.
Regards,
- Zheng
---
Zheng Liu(3)
ext4: add indirect punching hole support
ext4: let us fully support punching hole feature in fallocate
ext4: add tracepoint for punching hole
fs/ext4/ext4.h | 1 +
fs/ext4/extents.c | 14 ++++-----
fs/ext4/indirect.c | 244 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
fs/ext4/inode.c | 8 ++---
include/trace/events/ext4.h | 25 +++++++++++++++
5 files changed, 281 insertions(+), 11 deletions(-)
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