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fatfs: expose FF_USE_FASTSEEK option

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Felipe Neves
2020-08-03 14:26:59 -03:00
parent a88989fee8
commit 8815a3dfa0
2 changed files with 13 additions and 1 deletions
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12
components/fatfs/Kconfig
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@@ -180,4 +180,16 @@ menu "FAT Filesystem support"
Disable this option if optimizing for performance. Enable this option if Disable this option if optimizing for performance. Enable this option if
optimizing for internal memory size. optimizing for internal memory size.
config FATFS_USE_FASTSEEK
bool "Enable fast seek algorithm when using f_lseek function"
default n
help
The fast seek feature enables fast backward/long seek operations without
FAT access by using an in-memory CLMT (cluster link map table).
It is applied to f_read and f_write function as well, however,
the file size cannot be expanded by f_write.
f_lseek function while the file is at fast seek mode.
endmenu endmenu

2
components/fatfs/src/ffconf.h
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@@ -44,7 +44,7 @@
/* This option switches f_mkfs() function. (0:Disable or 1:Enable) */ /* This option switches f_mkfs() function. (0:Disable or 1:Enable) */
#define FF_USE_FASTSEEK 0 #define FF_USE_FASTSEEK CONFIG_FATFS_USE_FASTSEEK
/* This option switches fast seek function. (0:Disable or 1:Enable) */ /* This option switches fast seek function. (0:Disable or 1:Enable) */