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Free space of overwritten files in LittleFS #7434

Merged
merged 3 commits into from
Jul 8, 2020
Merged

Free space of overwritten files in LittleFS #7434

merged 3 commits into from
Jul 8, 2020

Commits on Jul 7, 2020

  1. Free space of overwritten files in LittleFS 

    Fixes esp8266#7426

LittleFS doesn't update the on-flash data structures when a file is
reopened as O_TRUNC until the file is closed.  This means the space of
the original, inaccessible file cannot be used, causing OOS errors in
cases when a large file is being overwritten.

Explicitly call the file sync operation to update the on-flash metadata
as soon as a file is opened.  For normal files it's a no-op, but for
O_TRUNC modes it will free the space, allowing full overwrite of large
files.
    @earlephilhower
    earlephilhower committed Jul 7, 2020
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  2. Add host test case for change

    @earlephilhower
    earlephilhower committed Jul 7, 2020
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  3. Merge branch 'master' into syncopated

    @earlephilhower
    earlephilhower authored Jul 7, 2020
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