diff options
| author | Lukas Czerner <lczerner@redhat.com> | 2014-04-20 23:45:47 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2014-04-20 23:45:47 -0400 |
| commit | 556615dcbf38b0a92a9e659f52c06686270dfc16 (patch) | |
| tree | 33a336cd219fc4386b811a9ffb03d3f6a79d7185 /fs/ext4/ext4.h | |
| parent | 090f32ee4ef0a59c738963c6b0a6948cc5dee84c (diff) | |
| download | lwn-556615dcbf38b0a92a9e659f52c06686270dfc16.tar.gz lwn-556615dcbf38b0a92a9e659f52c06686270dfc16.zip | |
ext4: rename uninitialized extents to unwritten
Currently in ext4 there is quite a mess when it comes to naming
unwritten extents. Sometimes we call it uninitialized and sometimes we
refer to it as unwritten.
The right name for the extent which has been allocated but does not
contain any written data is _unwritten_. Other file systems are
using this name consistently, even the buffer head state refers to it as
unwritten. We need to fix this confusion in ext4.
This commit changes every reference to an uninitialized extent (meaning
allocated but unwritten) to unwritten extent. This includes comments,
function names and variable names. It even covers abbreviation of the
word uninitialized (such as uninit) and some misspellings.
This commit does not change any of the code paths at all. This has been
confirmed by comparing md5sums of the assembly code of each object file
after all the function names were stripped from it.
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index b681d90b1e87..86c2cda208ea 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -183,7 +183,7 @@ struct ext4_map_blocks { #define EXT4_IO_END_UNWRITTEN 0x0001 /* - * For converting uninitialized extents on a work queue. 'handle' is used for + * For converting unwritten extents on a work queue. 'handle' is used for * buffered writeback. */ typedef struct ext4_io_end { @@ -536,26 +536,26 @@ enum { /* * Flags used by ext4_map_blocks() */ - /* Allocate any needed blocks and/or convert an unitialized + /* Allocate any needed blocks and/or convert an unwritten extent to be an initialized ext4 */ #define EXT4_GET_BLOCKS_CREATE 0x0001 - /* Request the creation of an unitialized extent */ -#define EXT4_GET_BLOCKS_UNINIT_EXT 0x0002 -#define EXT4_GET_BLOCKS_CREATE_UNINIT_EXT (EXT4_GET_BLOCKS_UNINIT_EXT|\ + /* Request the creation of an unwritten extent */ +#define EXT4_GET_BLOCKS_UNWRIT_EXT 0x0002 +#define EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT (EXT4_GET_BLOCKS_UNWRIT_EXT|\ EXT4_GET_BLOCKS_CREATE) /* Caller is from the delayed allocation writeout path * finally doing the actual allocation of delayed blocks */ #define EXT4_GET_BLOCKS_DELALLOC_RESERVE 0x0004 /* caller is from the direct IO path, request to creation of an - unitialized extents if not allocated, split the uninitialized + unwritten extents if not allocated, split the unwritten extent if blocks has been preallocated already*/ #define EXT4_GET_BLOCKS_PRE_IO 0x0008 #define EXT4_GET_BLOCKS_CONVERT 0x0010 #define EXT4_GET_BLOCKS_IO_CREATE_EXT (EXT4_GET_BLOCKS_PRE_IO|\ - EXT4_GET_BLOCKS_CREATE_UNINIT_EXT) + EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT) /* Convert extent to initialized after IO complete */ #define EXT4_GET_BLOCKS_IO_CONVERT_EXT (EXT4_GET_BLOCKS_CONVERT|\ - EXT4_GET_BLOCKS_CREATE_UNINIT_EXT) + EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT) /* Eventual metadata allocation (due to growing extent tree) * should not fail, so try to use reserved blocks for that.*/ #define EXT4_GET_BLOCKS_METADATA_NOFAIL 0x0020 |