The patches posted along with this cover letter are cleanups made
during the developement of subpagesize-blocksize patchset. I believe
that they can be integrated with the mainline kernel. Hence I have
posted them separately from the subpagesize-blocksize patchset.
I have testsed the patchset by running xfstests on ppc64 and
x86_64. On ppc64, some of the Btrfs specific tests and generic/255
fail because they assume 4K as the filesystem's block size. I have
fixed some of the test cases. I will fix the rest and mail them to the
fstests mailing list in the near future.
Changes from V5:
1. Introduced BTRFS_BYTES_TO_BLKS() helper to compute the number of
filesystem blocks spanning across a range of bytes. A call to this
macro replaces code such as "nr_blks = bytes >> inode->i_blkbits".
Changes from V4:
1. Removed the RFC tag.
Changes from V3:
Two new issues have been been fixed by the patches,
1. Btrfs: prepare_pages: Retry adding a page to the page cache.
2. Btrfs: Return valid delalloc range when the page does not have
PG_Dirty flag set or has been invalidated.
IMHO, The above issues are also applicable to the "page size == block
size" scenario but for reasons unknown to me they aren't seen even
when the tests are run for a long time.
Changes from V2:
1. For detecting logical errors, Use ASSERT() calls instead of calls to
BUG_ON().
2. In the patch "Btrfs: Compute and look up csums based on sectorsized
blocks", fix usage of kmap_atomic/kunmap_atomic such that between the
kmap_atomic() and kunmap_atomic() calls we do not invoke any function
that might cause the current task to sleep.
Changes from V1:
1. Call round_[down,up]() functions instead of doing hard coded alignment.
Chandan Rajendra (13):
Btrfs: __btrfs_buffered_write: Reserve/release extents aligned to
block size
Btrfs: Compute and look up csums based on sectorsized blocks
Btrfs: Direct I/O read: Work on sectorsized blocks
Btrfs: fallocate: Work with sectorsized blocks
Btrfs: btrfs_page_mkwrite: Reserve space in sectorsized units
Btrfs: Search for all ordered extents that could span across a page
Btrfs: Use (eb->start, seq) as search key for tree modification log
Btrfs: btrfs_submit_direct_hook: Handle map_length < bio vector length
Btrfs: Limit inline extents to root->sectorsize
Btrfs: Fix block size returned to user space
Btrfs: Clean pte corresponding to page straddling i_size
Btrfs: prepare_pages: Retry adding a page to the page cache
Btrfs: Return valid delalloc range when the page does not have
PG_Dirty flag set or has been invalidated
fs/btrfs/ctree.c | 34 ++++----
fs/btrfs/ctree.h | 5 +-
fs/btrfs/extent_io.c | 5 +-
fs/btrfs/file-item.c | 92 +++++++++++++-------
fs/btrfs/file.c | 118 +++++++++++++++++--------
fs/btrfs/inode.c | 241 ++++++++++++++++++++++++++++++++++++---------------
6 files changed, 335 insertions(+), 160 deletions(-)
--
2.1.0
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