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| author | Theodore Ts'o <tytso@mit.edu> | 2009-02-26 01:04:07 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2009-02-26 01:04:07 -0500 |
| commit | ccd2506bd43113659aa904d5bea5d1300605e2a6 (patch) | |
| tree | 99a95645b3c2c092427b7c537c5628d502cd9c22 /fs/ext4/ext4.h | |
| parent | f63e6005bc63acc0a6bc3bdb8f971dcfbd827185 (diff) | |
| download | lwn-ccd2506bd43113659aa904d5bea5d1300605e2a6.tar.gz lwn-ccd2506bd43113659aa904d5bea5d1300605e2a6.zip | |
ext4: add EXT4_IOC_ALLOC_DA_BLKS ioctl
Add an ioctl which forces all of the delay allocated blocks to be
allocated. This also provides a function ext4_alloc_da_blocks() which
will be used by the following commits to force files to be fully
allocated to preserve application-expected ext3 behaviour.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 096456c8559b..b0ea70cc94db 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -317,7 +317,9 @@ struct ext4_new_group_data { #define EXT4_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long) #define EXT4_IOC_GROUP_ADD _IOW('f', 8, struct ext4_new_group_input) #define EXT4_IOC_MIGRATE _IO('f', 9) + /* note ioctl 10 reserved for an early version of the FIEMAP ioctl */ /* note ioctl 11 reserved for filesystem-independent FIEMAP ioctl */ +#define EXT4_IOC_ALLOC_DA_BLKS _IO('f', 12) /* * ioctl commands in 32 bit emulation @@ -1094,6 +1096,7 @@ extern int ext4_can_truncate(struct inode *inode); extern void ext4_truncate(struct inode *); extern void ext4_set_inode_flags(struct inode *); extern void ext4_get_inode_flags(struct ext4_inode_info *); +extern int ext4_alloc_da_blocks(struct inode *inode); extern void ext4_set_aops(struct inode *inode); extern int ext4_writepage_trans_blocks(struct inode *); extern int ext4_meta_trans_blocks(struct inode *, int nrblocks, int idxblocks); |