Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
f2fs: disallow setting an extension to both cold and hot
An extension should not exist in both the cold and hot extension lists
simultaneously. When adding a hot extension, check whether it already
exists in the cold list, and vice versa. Reject the operation with
-EINVAL if a conflict is found.
Signed-off-by: Yongpeng Yang <yangyongpeng@xiaomi.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
authored by
Yongpeng Yang
and committed by
Jaegeuk Kim
b8b902fd
ed78aeeb
+15
+15
fs/f2fs/namei.c
+15
fs/f2fs/namei.c
···
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if (set) {
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if (total_count == F2FS_MAX_EXTENSION)
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return -EINVAL;
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+
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+
if (hot) {
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start = 0;
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count = cold_count;
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} else {
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start = cold_count;
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count = total_count;
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}
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for (i = start; i < count; i++) {
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if (!strcmp(name, extlist[i])) {
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f2fs_warn(sbi, "extension '%s' already exists in %s list",
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name, hot ? "cold" : "hot");
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return -EINVAL;
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}
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}
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} else {
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if (!hot && !cold_count)
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return -EINVAL;