diff options
| author | Mingming Cao <cmm@us.ibm.com> | 2009-09-28 15:49:08 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2009-09-28 15:49:08 -0400 |
| commit | 0031462b5b392f90d17f1d75abb795883c44e969 (patch) | |
| tree | e8323861b8dede0f3ddbfc8324d650bf1f4fd74b /fs/ext4/inode.c | |
| parent | 9f0ccfd8e07d61b413e6536ffa02fbf60d2e20d8 (diff) | |
ext4: Split uninitialized extents for direct I/O
When writing into an unitialized extent via direct I/O, and the direct
I/O doesn't exactly cover the unitialized extent, split the extent
into uninitialized and initialized extents before submitting the I/O.
This avoids needing to deal with an ENOSPC error in the end_io
callback that gets used for direct I/O.
When the IO is complete, the written extent will be marked as initialized.
Singed-Off-By: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/inode.c')
| -rw-r--r-- | fs/ext4/inode.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 219067ce09d9..da4f2ecb5447 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -1233,6 +1233,9 @@ int ext4_get_blocks(handle_t *handle, struct inode *inode, sector_t block, clear_buffer_mapped(bh); clear_buffer_unwritten(bh); + ext_debug("ext4_get_blocks(): inode %lu, flag %d, max_blocks %u," + "logical block %lu\n", inode->i_ino, flags, max_blocks, + (unsigned long)block); /* * Try to see if we can get the block without requesting a new * file system block. |