diff options
| author | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2023-06-27 14:17:19 +0100 |
|---|---|---|
| committer | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2023-06-27 14:17:19 +0100 |
| commit | 53ae158f6ddc14df5c44d62c06e33fdb66de1196 (patch) | |
| tree | d0d0485f5f614e0070bab6ff1b53d56aec7c2d8e /fs/btrfs/backref.c | |
| parent | ac9a78681b921877518763ba0e89202254349d1b (diff) | |
| parent | 47ba5f39eab3c2a9a1ba878159a6050f2bbfc0e2 (diff) | |
Merge tag 'arm-vfp-refactor-for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux into devel-stabledevel-stable
Refactor VFP support code and reimplement in C
The VFP related changes to permit kernel mode NEON in softirq context
resulted in some issues regarding en/disabling of sofirqs from asm code,
and this made it clear that it would be better to handle more of it from
C code.
Given that we already have infrastructure that associates undefined
instruction exceptions with handler code based on value/mask pairs, we
can easily move the dispatch of VFP and NEON instructions to C code once
we reimplement the actual VFP support routine (which reasons about how
to deal with the exception and whether any emulation is needed) in C
code first.
With those out of the way, we can drop the partial decoding logic in asm
that reasons about which ISA is being used by user space, as the
remaining cases are all 32-bit ARM only. This leaves a FPE specific
routine with some iWMMXT logic that is easily duplicated in C as well,
allowing us to move the FPE asm code into the FPE asm source file, and
out of the shared entry code.
Diffstat (limited to 'fs/btrfs/backref.c')
| -rw-r--r-- | fs/btrfs/backref.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index e54f0884802a..79336fa853db 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -45,7 +45,8 @@ static int check_extent_in_eb(struct btrfs_backref_walk_ctx *ctx, int root_count; bool cached; - if (!btrfs_file_extent_compression(eb, fi) && + if (!ctx->ignore_extent_item_pos && + !btrfs_file_extent_compression(eb, fi) && !btrfs_file_extent_encryption(eb, fi) && !btrfs_file_extent_other_encoding(eb, fi)) { u64 data_offset; @@ -552,7 +553,7 @@ static int add_all_parents(struct btrfs_backref_walk_ctx *ctx, count++; else goto next; - if (!ctx->ignore_extent_item_pos) { + if (!ctx->skip_inode_ref_list) { ret = check_extent_in_eb(ctx, &key, eb, fi, &eie); if (ret == BTRFS_ITERATE_EXTENT_INODES_STOP || ret < 0) @@ -564,7 +565,7 @@ static int add_all_parents(struct btrfs_backref_walk_ctx *ctx, eie, (void **)&old, GFP_NOFS); if (ret < 0) break; - if (!ret && !ctx->ignore_extent_item_pos) { + if (!ret && !ctx->skip_inode_ref_list) { while (old->next) old = old->next; old->next = eie; @@ -1606,7 +1607,7 @@ again: goto out; } if (ref->count && ref->parent) { - if (!ctx->ignore_extent_item_pos && !ref->inode_list && + if (!ctx->skip_inode_ref_list && !ref->inode_list && ref->level == 0) { struct btrfs_tree_parent_check check = { 0 }; struct extent_buffer *eb; @@ -1647,7 +1648,7 @@ again: (void **)&eie, GFP_NOFS); if (ret < 0) goto out; - if (!ret && !ctx->ignore_extent_item_pos) { + if (!ret && !ctx->skip_inode_ref_list) { /* * We've recorded that parent, so we must extend * its inode list here. @@ -1743,7 +1744,7 @@ int btrfs_find_all_leafs(struct btrfs_backref_walk_ctx *ctx) static int btrfs_find_all_roots_safe(struct btrfs_backref_walk_ctx *ctx) { const u64 orig_bytenr = ctx->bytenr; - const bool orig_ignore_extent_item_pos = ctx->ignore_extent_item_pos; + const bool orig_skip_inode_ref_list = ctx->skip_inode_ref_list; bool roots_ulist_allocated = false; struct ulist_iterator uiter; int ret = 0; @@ -1764,7 +1765,7 @@ static int btrfs_find_all_roots_safe(struct btrfs_backref_walk_ctx *ctx) roots_ulist_allocated = true; } - ctx->ignore_extent_item_pos = true; + ctx->skip_inode_ref_list = true; ULIST_ITER_INIT(&uiter); while (1) { @@ -1789,7 +1790,7 @@ static int btrfs_find_all_roots_safe(struct btrfs_backref_walk_ctx *ctx) ulist_free(ctx->refs); ctx->refs = NULL; ctx->bytenr = orig_bytenr; - ctx->ignore_extent_item_pos = orig_ignore_extent_item_pos; + ctx->skip_inode_ref_list = orig_skip_inode_ref_list; return ret; } @@ -1912,7 +1913,7 @@ int btrfs_is_data_extent_shared(struct btrfs_inode *inode, u64 bytenr, goto out_trans; } - walk_ctx.ignore_extent_item_pos = true; + walk_ctx.skip_inode_ref_list = true; walk_ctx.trans = trans; walk_ctx.fs_info = fs_info; walk_ctx.refs = &ctx->refs; |