Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
btrfs: zlib: don't cache sectorsize in a local variable
The sectorsize is used once or at most twice in the callbacks, no need
to cache it on stack.
Signed-off-by: David Sterba <dsterba@suse.com>
+3
-5
+3
-5
fs/btrfs/zlib.c
+3
-5
fs/btrfs/zlib.c
···
71
71
72
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struct list_head *zlib_alloc_workspace(struct btrfs_fs_info *fs_info, unsigned int level)
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{
74
-
const u32 blocksize = fs_info->sectorsize;
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74
struct workspace *workspace;
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75
int workspacesize;
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76
···
90
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workspace->buf_size = ZLIB_DFLTCC_BUF_SIZE;
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}
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if (!workspace->buf) {
93
-
workspace->buf = kmalloc(blocksize, GFP_KERNEL);
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-
workspace->buf_size = blocksize;
94
+
workspace->buf = kmalloc(fs_info->sectorsize, GFP_KERNEL);
95
+
workspace->buf_size = fs_info->sectorsize;
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96
}
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if (!workspace->strm.workspace || !workspace->buf)
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98
goto fail;
···
158
159
char *data_in = NULL;
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struct folio *in_folio = NULL;
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struct folio *out_folio = NULL;
161
-
const u32 blocksize = fs_info->sectorsize;
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const u64 orig_end = start + len;
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ret = zlib_deflateInit(&workspace->strm, workspace->level);
···
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}
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/* We're making it bigger, give up. */
241
-
if (workspace->strm.total_in > blocksize * 2 &&
243
+
if (workspace->strm.total_in > fs_info->sectorsize * 2 &&
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workspace->strm.total_in < workspace->strm.total_out) {
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ret = -E2BIG;
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goto out;