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| author | Theodore Ts'o <tytso@mit.edu> | 2010-05-16 19:00:00 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2010-05-16 19:00:00 -0400 |
| commit | e35fd6609b2fee54484d520deccb8f18bf7d38f3 (patch) | |
| tree | 9b786445602819074f599c282b31bead166e8c03 /fs/ext4/dir.c | |
| parent | 8e48dcfbd7c0892b4cfd064d682cc4c95a29df32 (diff) | |
| download | kernel_samsung_smdk4412-e35fd6609b2fee54484d520deccb8f18bf7d38f3.zip kernel_samsung_smdk4412-e35fd6609b2fee54484d520deccb8f18bf7d38f3.tar.gz kernel_samsung_smdk4412-e35fd6609b2fee54484d520deccb8f18bf7d38f3.tar.bz2 | |
ext4: Add new abstraction ext4_map_blocks() underneath ext4_get_blocks()
Jack up ext4_get_blocks() and add a new function, ext4_map_blocks()
which uses a much smaller structure, struct ext4_map_blocks which is
20 bytes, as opposed to a struct buffer_head, which nearly 5 times
bigger on an x86_64 machine. By switching things to use
ext4_map_blocks(), we can save stack space by using ext4_map_blocks()
since we can avoid allocating a struct buffer_head on the stack.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/dir.c')
0 files changed, 0 insertions, 0 deletions