On Thu 15-12-16 15:07:15, Michal Hocko wrote:
> From: Michal Hocko <mhocko@xxxxxxxx>
>
> This reverts commit 216553c4b7f3e3e2beb4981cddca9b2027523928. Now that
> the transaction context uses memalloc_nofs_save and all allocations
> within the this context inherit GFP_NOFS automatically, there is no
> reason to mark specific allocations explicitly.
>
> This patch should not introduce any functional change. The main point
> of this change is to reduce explicit GFP_NOFS usage inside ext4 code
> to make the review of the remaining usage easier.
>
> Signed-off-by: Michal Hocko <mhocko@xxxxxxxx>
Looks good to me. You can add:
Reviewed-by: Jan Kara <jack@xxxxxxx>
Honza
> ---
> fs/ext4/acl.c | 6 +++---
> fs/ext4/extents.c | 2 +-
> fs/ext4/resize.c | 4 ++--
> fs/ext4/xattr.c | 4 ++--
> 4 files changed, 8 insertions(+), 8 deletions(-)
>
> diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c
> index fd389935ecd1..9e98092c2a4b 100644
> --- a/fs/ext4/acl.c
> +++ b/fs/ext4/acl.c
> @@ -32,7 +32,7 @@ ext4_acl_from_disk(const void *value, size_t size)
> return ERR_PTR(-EINVAL);
> if (count == 0)
> return NULL;
> - acl = posix_acl_alloc(count, GFP_NOFS);
> + acl = posix_acl_alloc(count, GFP_KERNEL);
> if (!acl)
> return ERR_PTR(-ENOMEM);
> for (n = 0; n < count; n++) {
> @@ -94,7 +94,7 @@ ext4_acl_to_disk(const struct posix_acl *acl, size_t *size)
>
> *size = ext4_acl_size(acl->a_count);
> ext_acl = kmalloc(sizeof(ext4_acl_header) + acl->a_count *
> - sizeof(ext4_acl_entry), GFP_NOFS);
> + sizeof(ext4_acl_entry), GFP_KERNEL);
> if (!ext_acl)
> return ERR_PTR(-ENOMEM);
> ext_acl->a_version = cpu_to_le32(EXT4_ACL_VERSION);
> @@ -159,7 +159,7 @@ ext4_get_acl(struct inode *inode, int type)
> }
> retval = ext4_xattr_get(inode, name_index, "", NULL, 0);
> if (retval > 0) {
> - value = kmalloc(retval, GFP_NOFS);
> + value = kmalloc(retval, GFP_KERNEL);
> if (!value)
> return ERR_PTR(-ENOMEM);
> retval = ext4_xattr_get(inode, name_index, "", value, retval);
> diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
> index ef815eb72389..c901d89f0038 100644
> --- a/fs/ext4/extents.c
> +++ b/fs/ext4/extents.c
> @@ -2933,7 +2933,7 @@ int ext4_ext_remove_space(struct inode *inode, ext4_lblk_t start,
> le16_to_cpu(path[k].p_hdr->eh_entries)+1;
> } else {
> path = kzalloc(sizeof(struct ext4_ext_path) * (depth + 1),
> - GFP_NOFS);
> + GFP_KERNEL);
> if (path == NULL) {
> ext4_journal_stop(handle);
> return -ENOMEM;
> diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
> index cf681004b196..e121f4e048b8 100644
> --- a/fs/ext4/resize.c
> +++ b/fs/ext4/resize.c
> @@ -816,7 +816,7 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
>
> n_group_desc = ext4_kvmalloc((gdb_num + 1) *
> sizeof(struct buffer_head *),
> - GFP_NOFS);
> + GFP_KERNEL);
> if (!n_group_desc) {
> err = -ENOMEM;
> ext4_warning(sb, "not enough memory for %lu groups",
> @@ -943,7 +943,7 @@ static int reserve_backup_gdb(handle_t *handle, struct inode *inode,
> int res, i;
> int err;
>
> - primary = kmalloc(reserved_gdb * sizeof(*primary), GFP_NOFS);
> + primary = kmalloc(reserved_gdb * sizeof(*primary), GFP_KERNEL);
> if (!primary)
> return -ENOMEM;
>
> diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
> index 5a94fa52b74f..172317462238 100644
> --- a/fs/ext4/xattr.c
> +++ b/fs/ext4/xattr.c
> @@ -875,7 +875,7 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
>
> unlock_buffer(bs->bh);
> ea_bdebug(bs->bh, "cloning");
> - s->base = kmalloc(bs->bh->b_size, GFP_NOFS);
> + s->base = kmalloc(bs->bh->b_size, GFP_KERNEL);
> error = -ENOMEM;
> if (s->base == NULL)
> goto cleanup;
> @@ -887,7 +887,7 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode,
> }
> } else {
> /* Allocate a buffer where we construct the new block. */
> - s->base = kzalloc(sb->s_blocksize, GFP_NOFS);
> + s->base = kzalloc(sb->s_blocksize, GFP_KERNEL);
> /* assert(header == s->base) */
> error = -ENOMEM;
> if (s->base == NULL)
> --
> 2.10.2
>
--
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR
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