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author | Robert Morris <[email protected]> | 2017-08-09 14:16:55 -0400 |
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committer | Robert Morris <[email protected]> | 2017-08-09 14:16:55 -0400 |
commit | 6389d9d4103eaebdd4749cacf475014e525a1c9a (patch) | |
tree | 216b42f178039198374c3ee8c78629457ebd250a | |
parent | 4f14d8d1e594bdf45e36a035f6c3fd4ca959711e (diff) | |
download | xv6-labs-6389d9d4103eaebdd4749cacf475014e525a1c9a.tar.gz xv6-labs-6389d9d4103eaebdd4749cacf475014e525a1c9a.tar.bz2 xv6-labs-6389d9d4103eaebdd4749cacf475014e525a1c9a.zip |
nothing much
-rw-r--r-- | bio.c | 2 | ||||
-rw-r--r-- | fs.c | 2 | ||||
-rw-r--r-- | log.c | 4 |
3 files changed, 5 insertions, 3 deletions
@@ -99,7 +99,7 @@ bread(uint dev, uint blockno) struct buf *b; b = bget(dev, blockno); - if(!(b->flags & B_VALID)) { + if((b->flags & B_VALID) == 0) { iderw(b); } return b; @@ -190,7 +190,7 @@ static struct inode* iget(uint dev, uint inum); //PAGEBREAK! // Allocate an inode on device dev. -// Give it type type. +// Mark it as allocated by giving it type type. // Returns an unlocked but allocated and referenced inode. struct inode* ialloc(uint dev, short type) @@ -155,7 +155,9 @@ end_op(void) do_commit = 1; log.committing = 1; } else { - // begin_op() may be waiting for log space. + // begin_op() may be waiting for log space, + // and decrementing log.outstanding has decreased + // the amount of reserved space. wakeup(&log); } release(&log.lock); |