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| author | Jan Kara | 2016-03-09 04:26:39 +0100 |
|---|---|---|
| committer | Theodore Ts'o | 2016-03-09 04:26:39 +0100 |
| commit | 3bd6ad7b688e200ac7633b16affa164d7cd5ef07 (patch) | |
| tree | 3b2dc73eac4be83330720c732e85a6934ea86fba /fs/ext4/ext4.h | |
| parent | jbd2: save some atomic ops in __JI_COMMIT_RUNNING handling (diff) | |
| download | kernel-qcow2-linux-3bd6ad7b688e200ac7633b16affa164d7cd5ef07.tar.gz kernel-qcow2-linux-3bd6ad7b688e200ac7633b16affa164d7cd5ef07.tar.xz kernel-qcow2-linux-3bd6ad7b688e200ac7633b16affa164d7cd5ef07.zip | |
ext4: pack ioend structure better
On 64-bit architectures we have two 4-byte holes in struct ext4_io_end.
Order entries better to avoid this and thus make the structure occupy
64 instead of 72 bytes for 64-bit architectures.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 157b458a69d4..5035dfebdbaf 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -182,9 +182,9 @@ typedef struct ext4_io_end { struct bio *bio; /* Linked list of completed * bios covering the extent */ unsigned int flag; /* unwritten or not */ + atomic_t count; /* reference counter */ loff_t offset; /* offset in the file */ ssize_t size; /* size of the extent */ - atomic_t count; /* reference counter */ } ext4_io_end_t; struct ext4_io_submit { |