From: Jan Kara Date: Tue, 4 Jun 2013 16:12:57 +0000 (-0400) Subject: jbd2: cleanup needed free block estimates when starting a transaction X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~83^2~54 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=76c39904561004ac8675f858a290129e439d5168;p=pandora-kernel.git 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 Signed-off-by: Jan Kara Signed-off-by: "Theodore Ts'o" --- Reading git-diff-tree failed