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Use vtruncbuf() to clean out cached blocks on a file shorten rather than

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the more expensive vinvalbuf(), based on the FFS version of the same
routine.  I don't have any ext2fs filesystems to test this on.
This commit is contained in:
Peter Wemm 1998-10-29 09:30:52 +00:00
parent 44fdad9976
commit f6020599aa
2 changed files with 8 additions and 6 deletions
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7
sys/gnu/ext2fs/ext2_inode.c
View file

@ -142,7 +142,7 @@ ext2_truncate(vp, length, flags, cred, p)
register struct ext2_sb_info *fs;
struct buf *bp;
int offset, size, level;
long count, nblocks, vflags, blocksreleased = 0;
long count, nblocks, blocksreleased = 0;
struct timeval tv;
register int i;
int aflags, error, allerror;
@ -268,8 +268,9 @@ printf("ext2_truncate called %d to %d\n", VTOI(ovp)->i_number, length);
bcopy((caddr_t)&oip->i_db[0], (caddr_t)newblks, sizeof newblks);
bcopy((caddr_t)oldblks, (caddr_t)&oip->i_db[0], sizeof oldblks);
oip->i_size = osize;
vflags = ((length > 0) ? V_SAVE : 0) | V_SAVEMETA;
allerror = vinvalbuf(ovp, vflags, cred, p, 0, 0);
error = vtruncbuf(ovp, cred, p, length, (int)fs->s_blocksize);
if (error && (allerror == 0))
allerror = error;
/*
* Indirect blocks first.

7
sys/gnu/fs/ext2fs/ext2_inode.c
View file

@ -142,7 +142,7 @@ ext2_truncate(vp, length, flags, cred, p)
register struct ext2_sb_info *fs;
struct buf *bp;
int offset, size, level;
long count, nblocks, vflags, blocksreleased = 0;
long count, nblocks, blocksreleased = 0;
struct timeval tv;
register int i;
int aflags, error, allerror;
@ -268,8 +268,9 @@ printf("ext2_truncate called %d to %d\n", VTOI(ovp)->i_number, length);
bcopy((caddr_t)&oip->i_db[0], (caddr_t)newblks, sizeof newblks);
bcopy((caddr_t)oldblks, (caddr_t)&oip->i_db[0], sizeof oldblks);
oip->i_size = osize;
vflags = ((length > 0) ? V_SAVE : 0) | V_SAVEMETA;
allerror = vinvalbuf(ovp, vflags, cred, p, 0, 0);
error = vtruncbuf(ovp, cred, p, length, (int)fs->s_blocksize);
if (error && (allerror == 0))
allerror = error;
/*
* Indirect blocks first.