256bdb497c
struct ext4_allocation_context is rather large, and this bloats the stack of many functions which use it. Allocating it from a named slab cache will alleviate this. For example, with this change (on top of the noinline patch sent earlier): -ext4_mb_new_blocks 200 +ext4_mb_new_blocks 40 -ext4_mb_free_blocks 344 +ext4_mb_free_blocks 168 -ext4_mb_release_inode_pa 216 +ext4_mb_release_inode_pa 40 -ext4_mb_release_group_pa 192 +ext4_mb_release_group_pa 24 Most of these stack-allocated structs are actually used only for mballoc history; and in those cases often a smaller struct would do. So changing that may be another way around it, at least for those functions, if preferred. For now, in those cases where the ac is only for history, an allocation failure simply skips the history recording, and does not cause any other failures. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> |
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| .. | ||
| acl.c | ||
| acl.h | ||
| balloc.c | ||
| bitmap.c | ||
| dir.c | ||
| ext4_jbd2.c | ||
| extents.c | ||
| file.c | ||
| fsync.c | ||
| group.h | ||
| hash.c | ||
| ialloc.c | ||
| inode.c | ||
| ioctl.c | ||
| Makefile | ||
| mballoc.c | ||
| migrate.c | ||
| namei.c | ||
| namei.h | ||
| resize.c | ||
| super.c | ||
| symlink.c | ||
| xattr_security.c | ||
| xattr_trusted.c | ||
| xattr_user.c | ||
| xattr.c | ||
| xattr.h | ||