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f2fs: compress tmp files given extension 

Let's compress tmp files for the given extension list.

This patch does not change the previous behavior, but allow the cases as below.

Extention example: "ext"

- abc.ext : allow
- abc.ext.abc : allow
- abc.extm : not allow

Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2023-06-06 10:17:47 -07:00
parent 6201c478de
commit 2724daf6c2
1 changed files with 21 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
fs/f2fs/namei.c
View File

@ -23,7 +23,7 @@
#include <trace/events/f2fs.h>
static inline bool is_extension_exist(const unsigned char *s, const char *sub,
bool tmp_ext)
bool tmp_ext, bool tmp_dot)
{
size_t slen = strlen(s);
size_t sublen = strlen(sub);
@ -49,13 +49,27 @@ static inline bool is_extension_exist(const unsigned char *s, const char *sub,
for (i = 1; i < slen - sublen; i++) {
if (s[i] != '.')
continue;
if (!strncasecmp(s + i + 1, sub, sublen))
return true;
if (!strncasecmp(s + i + 1, sub, sublen)) {
if (!tmp_dot)
return true;
if (i == slen - sublen - 1 || s[i + 1 + sublen] == '.')
return true;
}
}
return false;
}
static inline bool is_temperature_extension(const unsigned char *s, const char *sub)
{
return is_extension_exist(s, sub, true, false);
}
static inline bool is_compress_extension(const unsigned char *s, const char *sub)
{
return is_extension_exist(s, sub, true, true);
}
int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
bool hot, bool set)
{
@ -148,7 +162,7 @@ static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir,
cold_count = le32_to_cpu(sbi->raw_super->extension_count);
hot_count = sbi->raw_super->hot_ext_count;
for (i = cold_count; i < cold_count + hot_count; i++)
if (is_extension_exist(name, extlist[i], false))
if (is_temperature_extension(name, extlist[i]))
break;
f2fs_up_read(&sbi->sb_lock);
if (i < (cold_count + hot_count))
@ -156,12 +170,12 @@ static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir,
/* Don't compress unallowed extension. */
for (i = 0; i < noext_cnt; i++)
if (is_extension_exist(name, noext[i], false))
if (is_compress_extension(name, noext[i]))
return;
/* Compress wanting extension. */
for (i = 0; i < ext_cnt; i++) {
if (is_extension_exist(name, ext[i], false)) {
if (is_compress_extension(name, ext[i])) {
set_compress_context(inode);
return;
}
@ -189,7 +203,7 @@ static void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode,
cold_count = le32_to_cpu(sbi->raw_super->extension_count);
hot_count = sbi->raw_super->hot_ext_count;
for (i = 0; i < cold_count + hot_count; i++)
if (is_extension_exist(name, extlist[i], true))
if (is_temperature_extension(name, extlist[i]))
break;
f2fs_up_read(&sbi->sb_lock);