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| author | Jan Kara <jack@suse.cz> | 2013-06-04 12:12:57 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2013-06-04 12:12:57 -0400 |
| commit | 76c39904561004ac8675f858a290129e439d5168 (patch) | |
| tree | 46b2c2800ffbad5dd2ebd4ceb66893414630df2b /fs/jbd2/commit.c | |
| parent | 2f387f849b6a5be5b4b914c43a8af0406279db11 (diff) | |
| download | linux-76c39904561004ac8675f858a290129e439d5168.tar.bz2 | |
jbd2: cleanup needed free block estimates when starting a transaction
__jbd2_log_space_left() and jbd_space_needed() were kind of odd.
jbd_space_needed() accounted also credits needed for currently
committing transaction while it didn't account for credits needed for
control blocks. __jbd2_log_space_left() then accounted for control
blocks as a fraction of free space. Since results of these two
functions are always only compared against each other, this works
correct but is somewhat strange. Move the estimates so that
jbd_space_needed() returns number of blocks needed for a transaction
including control blocks and __jbd2_log_space_left() returns free
space in the journal (with the committing transaction already
subtracted). Rename functions to jbd2_log_space_left() and
jbd2_space_needed() while we are changing them.
Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/jbd2/commit.c')
0 files changed, 0 insertions, 0 deletions