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| author | Sami Tolvanen <samitolvanen@google.com> | 2015-06-10 17:58:28 +0200 |
|---|---|---|
| committer | Gerrit Code Review <noreply-gerritcodereview@google.com> | 2015-06-10 17:58:28 +0200 |
| commit | e6f6097a7d59ae8443d7c7e5e39ecdc43b77f3ab (patch) | |
| tree | 6b3246980477918a5d27389194225864175bddda /updater | |
| parent | Merge "uncrypt: Write status when it reboots to factory reset" (diff) | |
| parent | Revert "Zero blocks before BLKDISCARD" (diff) | |
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Diffstat (limited to 'updater')
| -rw-r--r-- | updater/blockimg.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/updater/blockimg.c b/updater/blockimg.c index dfba7e420..5d0f1560c 100644 --- a/updater/blockimg.c +++ b/updater/blockimg.c @@ -39,6 +39,11 @@ #define BLOCKSIZE 4096 +// Set this to 0 to interpret 'erase' transfers to mean do a +// BLKDISCARD ioctl (the normal behavior). Set to 1 to interpret +// erase to mean fill the region with zeroes. +#define DEBUG_ERASE 0 + #ifndef BLKDISCARD #define BLKDISCARD _IO(0x12,119) #endif @@ -1278,7 +1283,8 @@ static int PerformCommandZero(CommandParameters* params) { } if (params->cmdname[0] == 'z') { - // Update only for the zero command, as the erase command will call this + // Update only for the zero command, as the erase command will call + // this if DEBUG_ERASE is defined. params->written += tgt->size; } @@ -1464,10 +1470,8 @@ static int PerformCommandErase(CommandParameters* params) { struct stat st; uint64_t blocks[2]; - // Always zero the blocks first to work around possibly flaky BLKDISCARD - // Bug: 20881595 - if (PerformCommandZero(params) != 0) { - goto pceout; + if (DEBUG_ERASE) { + return PerformCommandZero(params); } if (!params) { |