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| author |   Eric Biggers <ebiggers@google.com> | 2017-05-24 18:05:29 -0400 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2017-05-24 18:05:29 -0400 |
| commit | e5465795cac48233c9b606a7a419f4190a91851e (patch) | |
| tree | 94f07f19cf0f86b5586989863069468862873708 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | ext4: fix off-by-one on max nr_pages in ext4_find_unwritten_pgoff() (diff) | |
| download | linux-dev-e5465795cac48233c9b606a7a419f4190a91851e.tar.xz linux-dev-e5465795cac48233c9b606a7a419f4190a91851e.zip | |
ext4: fix off-by-one error when writing back pages before dio read
The 'lend' argument of filemap_write_and_wait_range() is inclusive, so
we need to subtract 1 from pos + count.
Note that 'count' is guaranteed to be nonzero since
ext4_file_read_iter() returns early when given a 0 count.
Fixes: 16c54688592c ("ext4: Allow parallel DIO reads")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions